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• implementing user tracking (logging) in Rails 3

  - by seth.vargo

  Hi, I'm creating a Rails application in which logging individual user actions is vital. Every time a user clicks a url, I want to log the action along with all parameters. Here is my current implementation: class CreateActivityLogs < ActiveRecord::Migration create_table :activity_logs do |t| t.references :user t.string :ip_address t.string :referring_url t.string :current_url t.text :params t.text :action t.timestamps end end   class ActivityLog < ActiveRecord::Base belongs_to :user end In a controller, I'd like to be able to do something like the following: ... ActivityLog::log @user.id, params, 'did foo with bar' ... I'd like to have the ActivityLog::log method automatically get the IP address, referring url, and current url (I know how to do this already) and create a new record in the table. So, my questions are: How do I do this? How do I use ActivityLog without having to create an instance everytime I want to log? Is this the best way? Some people have argued for a flat-file log for this kind of logging - however, I want admins to be able to see a user's activity in the backend as well, so I thought a database solution may be better?

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• Create Rails model with argument of associated model?

  - by Kyle Carlson

  I have two models, User and PushupReminder, and a method create_a_reminder in my PushupReminder controller (is that the best place to put it?) that I want to have create a new instance of a PushupReminder for a given user when I pass it a user ID. I have the association via the user_id column working correctly in my PushupReminder table and I've tested that I can both create reminders & send the reminder email correctly via the Rails console. Here is a snippet of the model code: class User < ActiveRecord::Base has_many :pushup_reminders end class PushupReminder < ActiveRecord::Base belongs_to :user end And the create_a_reminder method: def create_a_reminder(user) @user = User.find(user) @reminder = PushupReminder.create(:user_id => @user.id, :completed => false, :num_pushups => @user.pushups_per_reminder, :when_sent => Time.now) PushupReminderMailer.reminder_email(@user).deliver end I'm at a loss for how to run that create_a_reminder method in my code for a given user (eventually will be in a cron job for all my users). If someone could help me get my thinking on the right track, I'd really appreciate it. Thanks!

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• Why is my index view not working when I implement datepicker in my rails app

  - by user3736107

  Hi I am new to rails and would really appreciate some help, I am using the jQuery datepicker, the show view works however the index view doesn't, i get "undefined method `start_date' for nil:NilClass" in my index.html.erb file. Can you please let me know what is wrong with my index view and how i can fix it. The following are included in my app: meetups_controller.rb def show @meetup = Meetup.find(params[:id]) end def index @meetups = Meetup.where('user_id = ?', current_user.id).order('created_at DESC') end show.html.erb <h3>Title: <%= @meetup.title %></h3> <p>Start date: <%= @meetup.start_date.strftime("%B %e, %Y") %></p> <p>Start time: <%= @meetup.start_time.strftime("%l:%M %P") %></p> <p>End date: <%= @meetup.end_date.strftime("%B %e, %Y") %></p> <p>End time: <%= @meetup.end_time.strftime("%l:%M %P") %></p> index.html.erb <% if @meetups.any? %> <% @meetups.each do |meetup| %> <h3><%= link_to meetup.title, meetup_path(meetup) %></h3> <p>Start date: <%= meetup.start_date.strftime("%B %e, %Y") %></p> <p>Start time: <%= meetup.start_time.strftime("%l:%M %P") %></p> <p>End date: <%= @meetup.end_date.strftime("%B %e, %Y") %></p> <p>End time: <%= @meetup.end_time.strftime("%l:%M %P") %></p>

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• Rails 3 upgrade will_pagination wrong number of arguments (2 for 1)

  - by user1452541

  I am in the process of upgrading my rails app from 2.3.5 to 3.2.5 on ruby 1.9.3. In the old app I was using the will_paginate plugin, which I have converted to a gem. Now after the upgrade I am getting the following error : wrong number of arguments (2 for 1) A few lines from application trace: Application Trace | Framework Trace | Full Trace will_paginate (3.0.3) lib/will_paginate/active_record.rb:124:in `paginate' app/models/activity.rb:28:in `dashboard_activities' app/controllers/dashboard_controller.rb:10:in `index' actionpack (3.2.5) lib/action_controller/metal/implicit_render.rb:4:in `send_action' actionpack (3.2.5) l I believe the issue is in the old code in the activity Model where I am using pagination. Can anyone help? The code: def dashboard_activities(page, total_records, date_range1 = nil, date_range2 = nil ) unless date_range2.nil? x =[ "is_delete = false AND status = 'open' AND date(due_date) between ? and ?", date_range1, date_range2] else x =[ "is_delete = false AND status = 'open' AND date(due_date) = ? ", date_range1] end paginate(:all, :page =>page, :per_page =>total_records, :conditions => x, :order =>"due_date asc") end

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• Rails form not creating object

  - by user2136807

  I have created a simple form to create an instance of a modle and for some reason it is not calling the create method in the controller. Here is the form code: <% @house.mates.each do |mate| %> <p><%= mate.name %></p> <% end %> <h2>Add a new mate:</h2> <%= form_for @mate do |f| %> <p><%= f.label "Name" %> <%= f.text_field :name %> <%= f.hidden_field :house_id %> </p> <%= f.submit "Submit", :action => :create %> <% end %> Here is the controller code: class MatesController < ApplicationController def new @mate = Mate.new end def create @mate = Mate.new(params[:mate]) @mate.save redirect_to house_path(current_house) end end There is a many to one relationship between the Mate model and the House model... I am fairly new to rails but I have made other apps with similar forms, and I have never had this problem before. I can create and save Mate objects in the console, and I am not getting any errors, so it seem that somehow the controller method is not being called. Any help is much appreciated!

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• rails restful select_tag with :on_change

  - by Sam

  So I'm finally starting to use rest in rails. I want to have a select_tag with product categories and when one of the categories is selected I want it to update the products on change. I did this before with <% form_for :category, :url => { :action => "show" } do |f| %> <%= select_tag :id, options_from_collection_for_select(Category.find(:all), :id, :name), { :onchange => "this.form.submit();"} %> <% end %> however now it doesn't work because it tries to do the show action. I have two controllers 1) products 2) product_categories products belongs_to product_categories with a has_many How should I do this. Since the products are listed on the products controller and index action should I use the products controller or should I use the product_categories controller to find the category such as in the show action and then render the product/index page. But the real problem I have is how to get this form or any other option to work with restful routes.

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• How to change stack size for a .NET program?

  - by carter-boater

  I have a program that does recursive calls for 2 billion times and the stack overflow. I make changes, and then it still need 40K resursive calls. So I need probably serveral MB stack memory. I heard the stack size is default to 1MB. I tried search online. Some one said to go properties -linker .........in visual studio, but I cannot find it. Does anybody knows how to increase it? Also I am wondering if I can set it somewhere in my C# program? P.S. I am using 32-bit winXP and 64bit win7.

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• rake migration aborted: could not find table 'roles'

  - by user464180

  I just inherited code that I'm attempting to run the migrations for but I keep getting a rake aborted error. I've come across others that have what appears to be similar issues, but most involved Heroku and I'm trying to run this locally (to start.) I've tried troubleshooting using both PostgreSQL and SQLite, and both produce the same issue. The table "roles" referenced is the second migration called, so I'm having a hard time figuring out what is causing it to not get built. Any and all assistance is greatly appreciated. Thanks in advance. Here's the roles migration: class CreateRoles < ActiveRecord::Migration def change create_table :roles do |t| t.string :name t.timestamps end end end Here is the trace for SQLite: ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment rake aborted! Could not find table 'roles' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/sqlite_adapter.rb:470:in `table_structure' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/sqlite_adapter.rb:351:in `columns' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/schema_cache.rb:12:in `block in initialize' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:228:in `yield' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:228:in `default' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:228:in `columns' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:248:in `column_names' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:261:in `column_methods_hash' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/dynamic_matchers.rb:69:in `all_attributes_exists?' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/dynamic_matchers.rb:27:in `method_missing' /Users/sa/Documents/AptanaWorkspace/recprototype/config/initializ ers/constants.rb:1:in `<top (required)>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:245:in `load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:245:in `block in load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:236:in `load_dependency' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:245:in `load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/engi ne.rb:588:in `block (2 levels) in <class:Engine>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/engi ne.rb:587:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/engi ne.rb:587:in `block in <class:Engine>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:30:in `instance_exec' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:30:in `run' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:55:in `block in run_initializers' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:54:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:54:in `run_initializers' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/appl ication.rb:136:in `initialize!' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/rail tie/configurable.rb:30:in `method_missing' /Users/sa/Documents/AptanaWorkspace/recprototype/config/environme nt.rb:5:in `<top (required)>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:251:in `require' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:251:in `block in require' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:236:in `load_dependency' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:251:in `require' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/appl ication.rb:103:in `require_environment!' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/appl ication.rb:292:in `block (2 levels) in initialize_tasks' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :205:in `call' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :205:in `block in execute' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :200:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :200:in `execute' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :158:in `block in invoke_with_call_chain' /Users/sa/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :151:in `invoke_with_call_chain' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :176:in `block in invoke_prerequisites' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :174:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :174:in `invoke_prerequisites' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :157:in `block in invoke_with_call_chain' /Users/sa/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :151:in `invoke_with_call_chain' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :144:in `invoke' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:116:in `invoke_task' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:94:in `block (2 levels) in top_level' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:94:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:94:in `block in top_level' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:133:in `standard_exception_handling' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:88:in `top_level' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:66:in `block in run' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:133:in `standard_exception_handling' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:63:in `run' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/bin/rake:33:in ` <top (required)>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `<main>' Tasks: TOP => db:migrate => environment Here is the trace for PostgreSQL: ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment rake aborted! PG::Error: ERROR: relation "roles" does not exist LINE 4: WHERE a.attrelid = '"roles"'::regclass ^ : SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a .attnotnull FROM pg_attribute a LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum WHERE a.attrelid = '"roles"'::regclass AND a.attnum > 0 AND NOT a.attisdropped ORDER BY a.attnum /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/postgresql_adapter.rb:1106:in `async_exec' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/postgresql_adapter.rb:1106:in `exec_no_cache' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/postgresql_adapter.rb:650:in `block in exec_query' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/abstract_adapter.rb:280:in `block in log' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/notifications/instrumenter.rb:20:in `instrument' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/abstract_adapter.rb:275:in `log' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/postgresql_adapter.rb:649:in `exec_query' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/postgresql_adapter.rb:1231:in `column_definitions' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/postgresql_adapter.rb:845:in `columns' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/connection_adapters/schema_cache.rb:12:in `block in initialize' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:228:in `yield' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:228:in `default' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:228:in `columns' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:248:in `column_names' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/model_schema.rb:261:in `column_methods_hash' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/dynamic_matchers.rb:69:in `all_attributes_exists?' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.1/lib/active _record/dynamic_matchers.rb:27:in `method_missing' /Users/sa/Documents/AptanaWorkspace/recprototype/config/initializ ers/constants.rb:1:in `<top (required)>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:245:in `load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:245:in `block in load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:236:in `load_dependency' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:245:in `load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/engi ne.rb:588:in `block (2 levels) in <class:Engine>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/engi ne.rb:587:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/engi ne.rb:587:in `block in <class:Engine>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:30:in `instance_exec' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:30:in `run' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:55:in `block in run_initializers' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:54:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/init ializable.rb:54:in `run_initializers' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/appl ication.rb:136:in `initialize!' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/rail tie/configurable.rb:30:in `method_missing' /Users/sa/Documents/AptanaWorkspace/recprototype/config/environme nt.rb:5:in `<top (required)>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:251:in `require' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:251:in `block in require' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:236:in `load_dependency' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/activesupport-3.2.1/lib/activ e_support/dependencies.rb:251:in `require' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/appl ication.rb:103:in `require_environment!' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/railties-3.2.1/lib/rails/appl ication.rb:292:in `block (2 levels) in initialize_tasks' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :205:in `call' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :205:in `block in execute' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :200:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :200:in `execute' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :158:in `block in invoke_with_call_chain' /Users/sa/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :151:in `invoke_with_call_chain' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :176:in `block in invoke_prerequisites' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :174:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :174:in `invoke_prerequisites' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :157:in `block in invoke_with_call_chain' /Users/sa/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :151:in `invoke_with_call_chain' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb :144:in `invoke' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:116:in `invoke_task' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:94:in `block (2 levels) in top_level' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:94:in `each' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:94:in `block in top_level' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:133:in `standard_exception_handling' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:88:in `top_level' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:66:in `block in run' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:133:in `standard_exception_handling' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/applica tion.rb:63:in `run' /Users/sa/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/bin/rake:33:in ` <top (required)>' /Users/sa/.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `load' /Users/sa/.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `<main>' Tasks: TOP => db:migrate => environment

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• how to change stack size for a C# program?

  - by carter-boater

  Dear friends, I have a program that does recursive calls for 2 billion times and the stack overflow. I make changes, and then it still need 40K resursive calls. So I need probably serveral MB stack memory. I heard the stack size is default to 1MB. I tried search online. Some one said to go properties -linker .........in visual studio, but I cannot find it. Does anybody knows how to increase it? Also I am wondering if I can set it some where in my C# program? P.S. I am using 32-bit winXP and 64bit win7. Thanks a lot

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• What does a modern, standard Microsoft-based technology stack look like?

  - by Sean Owen

  Let's say I asked Microsoft to describe the perfect, modern, Microsoft-based technology stack to power a standard e-commerce web site, which perhaps has a simple 2-tier web/database architecture. What would it be like? Yes, I'm just looking for a list of product / technology names. For example, in the J2EE world, I might describe a stack that includes: J2EE 6 standard JavaServer Faces Glassfish 3 MySQL 5.1.x I'm guessing this stack includes some combination of .NET, SQL Server, ASP.NET, IIS, etc. but I am not familiar with this world. Looking for ideas on the equivalent in Microsoft-land.

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• What tech stack/platform to use for a project?

  - by danny z

  Hey guys, This is a bit of a weird meta-programming question, but I've realized that my new project doesn't need a full MVC framework, and being a rails guy, I'm not sure what to use now. To give you a gist of the necessary functionality; this website will display static pages, but users will be able to log in and 'edit their current plans'. All purchasing and credit card editing is being handled by a recurring payment subscriber, I just need a page to edit their current plan. All of that will be done through (dynamic) XML API calls, so no database is necessary. Should I stick with my typical rails/nginx stack, or is there something I could use that would lighten the load, since I don't need the Rails heft. I'm familiar with python and PHP but would prefer not to go that route. Is Sinatra a good choice here? tl;dr: What's a good way to quickly serve mostly static pages, preferably in Ruby, with some pages requiring dynamic XML rendering?

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• how do I filter RoutingErrors and their long stack trace out of my log? rails

  - by codeman73

  I am seeing several strange requests like this, with urls like /sitemap/, /google_sitemap.xml.gz, /sitemap.xml.gz, /google_sitemap.xml, /cgi-bin/awstat/awstats.pl, etc. The default rails behavior dumps these long stack traces into my log, like the following: ActionController::RoutingError (No route matches "/rails/info/properties" with {:method=>:get}): /dh/passenger/lib/phusion_passenger/rack/request_handler.rb:92:in `process_request' /dh/passenger/lib/phusion_passenger/abstract_request_handler.rb:207:in `main_loop' /dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:400:in `start_request_handler' /dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:351:in `handle_spawn_application' /dh/passenger/lib/phusion_passenger/utils.rb:184:in `safe_fork' etc. Is there any way to stop these long stack traces? I wouldn't mind the first line, the ActionController::RoutingError with the message and the url, but I'd like to get rid of the long stack of passenger stuff.

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• Implement Negascout Algorithm with stack

  - by Dan

  I'm not familiar with how these stack exchange accounts work so if this is double posting I apologize. I asked the same thing on stackoverflow. I have added an AI routine to a game I am working on using the Negascout algorithm. It works great, but when I set a higher maximum depth it can take a few seconds to complete. The problem is it blocks the main thread, and the framework I am using does not have a way to deal with multi-threading properly across platforms. So I am trying to change this routine from recursively calling itself, to just managing a stack (vector) so that I can progress through the routine at a controlled pace and not lock up the application while the AI is thinking. I am getting hung up on the second recursive call in the loop. It relies on a returned value from the first call, so I don't know how to add these to a stack. My Working c++ Recursive Code: MoveScore abNegascout(vector<vector<char> > &board, int ply, int alpha, int beta, char piece) { if (ply==mMaxPly) { return MoveScore(evaluation.evaluateBoard(board, piece, oppPiece)); } int currentScore; int bestScore = -INFINITY; MoveCoord bestMove; int adaptiveBeta = beta; vector<MoveCoord> moveList = evaluation.genPriorityMoves(board, piece, findValidMove(board, piece, false)); if (moveList.empty()) { return MoveScore(bestScore); } bestMove = moveList[0]; for(int i=0;i<moveList.size();i++) { MoveCoord move = moveList[i]; vector<vector<char> > newBoard; newBoard.insert( newBoard.end(), board.begin(), board.end() ); effectMove(newBoard, piece, move.getRow(), move.getCol()); // First Call ****** MoveScore current = abNegascout(newBoard, ply+1, -adaptiveBeta, -max(alpha,bestScore), oppPiece); currentScore = - current.getScore(); if (currentScore>bestScore){ if (adaptiveBeta == beta || ply>=(mMaxPly-2)){ bestScore = currentScore; bestMove = move; }else { // Second Call ****** current = abNegascout(newBoard, ply+1, -beta, -currentScore, oppPiece); bestScore = - current.getScore(); bestMove = move; } if(bestScore>=beta){ return MoveScore(bestMove,bestScore); } adaptiveBeta = max(alpha, bestScore) + 1; } } return MoveScore(bestMove,bestScore); } If someone can please help by explaining how to get this to work with a simple stack. Example code would be much appreciated. While c++ would be perfect, any language that demonstrates how would be great. Thank You.

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• How much freedom should a programmer have in choosing a language and framework?

  - by Spencer

  I started working at a company that is primarily a C# oriented. We have a few people who like Java and JRuby, but a majority of programmers here like C#. I was hired because I have a lot of experience building web applications and because I lean towards newer technologies like JRuby on Rails or nodejs. I have recently started on a project building a web application with a focus on getting a lot of stuff done in a short amount of time. The software lead has dictated that I use mvc4 instead of rails. That might be OK, except I don't know mvc4, I don't know C# and I am the only one responsible for creating the web application server and front-end UI. Wouldn't it make sense to use a framework that I already know extremely well (Rails) instead of using mvc4? The two reasons behind the decision was that the tech lead doesn't know Jruby/rails and there would be no way to reuse the code. Counter arguments: He won't be contributing to the code and is frankly, not needed on this project. So, it doesn't really matter if he knows JRuby/rails or not. We actually can reuse the code since we have a lot of java apps that JRuby can pull code from and vice-versa. In fact, he has dedicated some resources to convert a Java library to C#, instead of just running the Java library on the JRuby on Rails app. All because he doesn't like Java or JRuby I have built many web applications, but using something unfamiliar is causing some spin-up and I am unable to build an awesome application in as short of a time that I'm used to. This would be fine, learning new technologies is important in this field. The problem is, for this project, we need to get a lot done in a short period of time. At what point should a developer be allowed to choose his tools? Is this dependent on the company? Does my company suck or is this considered normal? Do greener pastures exist? Am I looking at this the wrong way? Bonus: Should I just keep my head down and move along at a snails pace, or defy orders and go with what I know in order to make this project more successful? Edit: I had actually created a fully function rails application (on my own time) and showed it to the team and it did not seem to matter. I am currently porting it to mvc4 (slowly).

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• 2D Grid Map Connectivity Check (avoiding stack overflow)

  - by SombreErmine

  I am trying to create a routine in C++ that will run before a more expensive A* algorithm that checks to see if two nodes on a 2D grid map are connected or not. What I need to know is a good way to accomplish this sequentially rather than recursively to avoid overflowing the stack. What I've Done Already I've implemented this with ease using a recursive algorithm; however, depending upon different situations it will generate a stack overflow. Upon researching this, I've come to the conclusion that it is overflowing the stack because of too many recursive function calls. I am sure that my recursion does not enter an infinite loop. I generate connected sets at the beginning of the level, and then I use those connected sets to determine connectivity on the fly later. Basically, the generating algorithm starts from left-to-right top-to-bottom. It skips wall nodes and marks them as visited. Whenever it reaches a walkable node, it recursively checks in all four cardinal directions for connected walkable nodes. Every node that gets checked is marked as visited so they aren't handled twice. After checking a node, it is added to either a walls set, a doors set, or one of multiple walkable nodes sets. Once it fills that area, it continues the original ltr ttb loop skipping already-visited nodes. I've also looked into flood-fill algorithms, but I can't make sense of the sequential algorithms and how to adapt them. Can anyone suggest a better way to accomplish this without causing a stack overflow? The only way I can think of is to do the left-to-right top-to-bottom loop generating connected sets on a row basis. Then check the previous row to see if any of the connected sets are connected and then join the sets that are. I haven't decided on the best data structures to use for that though. I also just thought about having the connected sets pre-generated outside the game, but I wouldn't know where to start with creating a tool for that. Any help is appreciated. Thanks!

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• Rails - How to use modal form to add object in one model, then reflect that change on main page?

  - by Jim

  I'm working on a Rails app and I've come across a situation where I'm unsure of the cleanest way to proceed. I posted a question on SO with code samples and such - it has received no answers, and the more I think about the problem, the more I think I might be approaching this the wrong way. (See the SO question at http://stackoverflow.com/questions/9521319/how-to-reference-form-when-rendering-partial-from-js-erb-file) So, in more of a generic architecture type question: Right now I have a form where a user can add a new recipe. The form also allows the user to select ingredients (it uses a collection_select which contains Ingredient.all). The catch is - I'd like the user to be able to add a new ingredient on the fly, without leaving the recipe form. Using a hidden div and some jQuery/AJAX, I have a link the user can click to popup a modal form containing ingredients/new.html.erb which is a simple form. When that form is submitted, I call ingredients/create.js.erb to validate the ingredient was saved and hide the modal div. Now I am back to my recipe form, but my collection_select hasn't updated. It seems I have a few choices here: try and re-render the collection_select portion of the form so it grabs a new list of ingredients. This was the method I was attempting when I wrote the SO question. The problem I run into is the partial I use for the collection_select needs the parent form passed in, and when I try and render from the JS file I don't know how to pass it the form object. Reload the recipe form. This works (the collection_select now contains the new ingredient), but the user loses any progress they made on the recipe form. I would need a way to persist the form data - I thought about manually passing the values back and forth, but that is sloppy and there has to be a better way... Try and manually insert the tags using jQuery - this would be simple, but because I'm allowing for multiple ingredients to be added, I can't be certain what ID to target. Now, I can't be the only person to have this issue - so is there an easier way I'm missing? I like option 2 above, but I don't know if there's an easy way to grab the entire params hash as if I had submitted the main recipes form. Hopefully someone can point me in the right direction so I can find an answer to this... If this doesn't make any sense at all, let me know - I can post code samples if you want, but most of the pertinent code is up on the SO question. Thanks!

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• Wierd Haml 3 error with ruby 1.9.1 and rails 3

  - by Micke

  I'm getting this wierd error on my windows 7 computer when i am using the html2haml command with Haml 3 and Rails on ruby 1.9: -- control frame ---------- c:0017 p:-9593720 s:0052 b:0052 l:000051 d:000051 TOP c:0016 p:---- s:0050 b:0050 l:000049 d:000049 CFUNC :require c:0015 p:0026 s:0046 b:0046 l:000045 d:000045 TOP C:/Ruby/lib/ruby/gems/1.9.1/gems/hpricot-0.8.2-x86-mswin32/lib/hpricot.rb:20 c:0014 p:---- s:0044 b:0044 l:000043 d:000043 FINISH c:0013 p:---- s:0042 b:0042 l:000041 d:000041 CFUNC :require c:0012 p:0095 s:0038 b:0038 l:000037 d:000037 TOP C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/html.rb:101 c:0011 p:---- s:0036 b:0036 l:000035 d:000035 FINISH c:0010 p:---- s:0034 b:0034 l:000033 d:000033 CFUNC :require c:0009 p:0022 s:0030 b:0030 l:000029 d:000029 METHOD C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/exec.rb:559 c:0008 p:0050 s:0023 b:0023 l:000022 d:000022 METHOD C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/exec.rb:41 c:0007 p:0013 s:0020 b:0020 l:000019 d:000019 METHOD C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/exec.rb:22 c:0006 p:0078 s:0016 b:0016 l:000015 d:000015 TOP C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/bin/html2haml:7 c:0005 p:---- s:0013 b:0013 l:000012 d:000012 FINISH c:0004 p:---- s:0011 b:0011 l:000010 d:000010 CFUNC :load c:0003 p:0127 s:0007 b:0007 l:000e54 d:0020c0 EVAL C:/Ruby/bin/html2haml:19 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH c:0001 p:0000 s:0002 b:0002 l:000e54 d:000e54 TOP --------------------------- -- Ruby level backtrace information----------------------------------------- C:/Ruby/lib/ruby/gems/1.9.1/gems/hpricot-0.8.2-x86-mswin32/lib/hpricot.rb:20:in `require' C:/Ruby/lib/ruby/gems/1.9.1/gems/hpricot-0.8.2-x86-mswin32/lib/hpricot.rb:20:in `<top (required)>' C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/html.rb:101:in `require' C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/html.rb:101:in `<top (required)>' C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/exec.rb:559:in `require' C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/exec.rb:559:in `process_result' C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/exec.rb:41:in `parse' C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/lib/haml/exec.rb:22:in `parse!' C:/Ruby/lib/ruby/gems/1.9.1/gems/haml-3.0.0/bin/html2haml:7:in `<top (required)>' C:/Ruby/bin/html2haml:19:in `load' C:/Ruby/bin/html2haml:19:in `<main>' [NOTE] You may encounter a bug of Ruby interpreter. Bug reports are welcome. For details: http://www.ruby-lang.org/bugreport.html This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. And then ruby crashes. I have reinstalled all the gems but nothing will help. Please help me

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• dublicate display of Posts from controller - conditions and joins problem - Ruby on Rails

  - by bgadoci

  I have built a blog application using Ruby on Rails. In the application I have posts and tags. Post has_many :tags and Tag belongs_to :post. In the /views/posts/index.html view I want to display two things. First is a listing of all posts displayed 'created_at DESC' and then in the side bar I am wanting to reference my Tags table, group records, and display as a link that allows for viewing all posts with that tag. With the code below, I am able to display the tag groups and succesfully display all posts with that tag. There are two problems with it thought. /posts view, the code seems to be referencing the Tag table and displaying the post multiple times, directly correlated to how many tags that post has. (i.e. if the post has 3 tags it will display the post 3 times). /posts view, only displays posts that have Tags. If the post doesn't have a tag, no display at all. /views/posts/index.html.erb <%= render :partial => @posts %> /views/posts/_post.html.erb <% div_for post do %> <h2><%= link_to_unless_current h(post.title), post %></h2> <i>Posted <%= time_ago_in_words(post.created_at) %></i> ago <%= simple_format h truncate(post.body, :length => 300) %> <%= link_to "Read More", post %> | <%= link_to "View & Add Comments (#{post.comments.count})", post %> <hr/> <% end %> /models/post.rb class Post < ActiveRecord::Base validates_presence_of :body, :title has_many :comments, :dependent => :destroy has_many :tags, :dependent => :destroy cattr_reader :per_page @@per_page = 10 end posts_controller.rb def index @tag_counts = Tag.count(:group => :tag_name, :order => 'updated_at DESC', :limit => 10) @posts=Post.all(:joins => :tags,:conditions=>(params[:tag_name] ? { :tags => { :tag_name => params[:tag_name] }} : {} ) ).paginate :page => params[:page], :per_page => 5 respond_to do |format| format.html # index.html.erb format.xml { render :xml => @posts } format.json { render :json => @posts } format.atom end end

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• link_to passing paramater and display problem - tag feature - Ruby on Rails

  - by bgadoci

  I have gotten a great deal of help from KandadaBoggu on my last question and very very thankful for that. As we were getting buried in the comments I wanted to break this part out. I am attempting to create a tag feature on the rails blog I am developing. The relationship is Post has_many :tags and Tag belongs_to :post. Adding and deleting tags to posts are working great. In my /view/posts/index.html.erb I have a section called tags where I am successfully querying the Tags table, grouping them and displaying the count next to the tag_name (as a side note, I mistakenly called the column containing the tag name, 'tag_name' instead of just 'name' as I should have) . In addition the display of these groups are a link that is referencing the index method in the PostsController. That is where the problem is. When you navigate to /posts you get an error because there is no parameter being passed (without clicking the tag group link). I have the .empty? in there so not sure what is going wrong here. Here is the error and code: Error You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.empty? /views/posts/index.html.erb <% @tag_counts.each do |tag_name, tag_count| %> <tr> <td><%= link_to(tag_name, posts_path(:tag_name => tag_name)) %></td> <td>(<%=tag_count%>)</td> </tr> <% end %> PostsController def index @tag_counts = Tag.count(:group => :tag_name, :order => 'updated_at DESC', :limit => 10) @posts=Post.all(:joins => :tags,:conditions=>(params[:tag_name].empty? ? {}: { :tags => { :tag_name => params[:tag_name] }} ) ) respond_to do |format| format.html # index.html.erb format.xml { render :xml => @posts } format.json { render :json => @posts } format.atom end end

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• Creating a Blog ruby on Rails - Problem Deleting Comments

  - by bgadoci

  As I always type I am new to rails and programming in general so go easy. Thanks in advance. I have successfully followed the initial tutorial from Ryan Bates on how to build a weblog in 15 minutes. If you don't know this tutorial takes you through creating posts and allowing for comments on those post. It even introduces AJAX through the creating and displaying comments on the posts show.html.erb page. All works great. Here's the hiccup, when Ryan takes you though this tutorial he clears out the comments_controller and only shows the code for creating comments. I am trying to add back the ability to edit and destroy comments. Can't see to get it to work, keeps deleting the actual post not the comment (log shows that I keep sending DELETE request to PostsController). Here is my code: class CommentsController < ApplicationController def create @post = Post.find(params[:post_id]) @comment = @post.comments.create!(params[:comment]) respond_to do |format| format.html { redirect_to @post } format.js end end def destroy @comment = Comment.find(params[:id]) @comment.destroy respond_to do |format| format.html { redirect_to(posts_url) } format.xml { head :ok } end end end /views/posts/show.html.erb <%= render :partial => @post %> <p> <%= link_to 'Edit', edit_post_path (@post) %> | <%= link_to 'Destroy', @post, :method => :delete, :confirm => "Are you sure?" %> | <%= link_to 'See All Posts', posts_path %> </p> <h2>Comments</h2> <div id="comments"> <%= render :partial => @post.comments %> </div> <% remote_form_for [@post, Comment.new] do |f| %> <p> <%= f.label :body, "New Comment" %><br/> <%= f.text_area :body %> </p> <p> <%= f.submit "Add Comment" %></p> <% end %> /views/comments/_comment.html.erb <% div_for comment do %> <p> <strong>Posted <%= time_ago_in_words(comment.created_at) %> ago </strong><br/> <%= h(comment.body) %><br/> <%= link_to 'Destroy', @comments, :method => :delete, :confirm => "Are you sure?" %> </p> <% end %>

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• Invert a stack, without using extra data structures?

  - by vks

  How would you invert a stack, without using extra data structures, like a second, or temporary, stack. Thus no stack1-stack2 or stack-queue-stack implementation in the answer. You just have access to push/pop feature of a standard stack. I think there is way to do it by keeping a global counter and using pointer manipulation. If I solve it myself, I will post it. If someone else figures it out, please post your solution.

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• Unable to get simple ruby on rails Search to work :/

  - by edu222

  I am new to RoR, any help would be greatly appreciated :) I have a basic scaffolding CRUD app to add customers. I am trying to search by first_name or last_name fields. The error that I am getting is: NoMethodError in Clientes#find You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.each Extracted source (around line #9): 6: <th>Apellido</th> 7: </tr> 8: 9: <% for cliente in @clientes %> 10: <tr> 11: <td><%=h cliente.client_name %></td> 12: <td><%=h cliente.client_lastname %></td> Application Trace C:/Rails/clientes/app/views/clientes/find.html.erb:9:in `_run_erb_app47views47clientes47find46html46erb' My find function in controllers/clientes_controlee.rb is: # Find def find @cliente = Cliente.find(:all, :conditions=>["client_name = ? OR client_lastname = ?", params[:search_string], params[:search_string]]) end My views/layouts clientes.html.erb form code fragment is: <span style="text-align: right"> <% form_tag "/clientes/find" do %> <%= text_field_tag :search_string %> <%= submit_tag "Search" %> <% end %> </span> The search template I created in views/clientes/find.html.erb: <h1>Listing clientes for <%= params[:search_string] %></h1> <table> <tr> <th>Nombre</th> <th>Apellido</th> </tr> <% for cliente in @clientes %> <tr> <td><%=h cliente.client_name %></td> <td><%=h cliente.client_lastname %></td> <td><%= link_to 'Mostrar', cliente %></td> <td><%= link_to 'Editar', edit_cliente_path(cliente) %></td> <td><%= link_to 'Eliminar', cliente, :confirm =>'Estas Seguro de que desear eliminar a este te cliente?', :method => :delete %></td> </tr> <% end %> </table> <%= link_to 'Atras', clientes_path %

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• uninitialized constant Active Scaffold rails 2.3.5

  - by Kiva

  Hi guy, I update my rails application 2.0.2 to 2.3.5. I use active scaffold for the administration part. I change nothing in my code but a problem is coming with the update. I have a controller 'admin/user_controller' to manage users. Here is the code of the controller: class Admin::UserController < ApplicationController layout 'admin' active_scaffold :user do |config| config.columns.exclude :content, :historique_content, :user_has_objet, :user_has_arme, :user_has_entrainement, :user_has_mission, :mp, :pvp, :user_salt, :tchat, :notoriete_by_pvp, :invitation config.list.columns = [:user_login, :user_niveau, :user_mail, :user_bloc, :user_valide, :group_id] #:user_description, :race, :group, :user_lastvisited, :user_nextaction, :user_combats_gagner, :user_combats_perdu, :user_combats_nul, :user_password, :user_salt, :user_combats, :user_experience, :user_mana, :user_vie config.create.link.page = true config.update.link.page = true config.create.columns.add :password, :password_confirmation config.update.columns.add :password, :password_confirmation config.create.columns.exclude :user_password, :user_salt config.update.columns.exclude :user_password, :user_salt config.list.sorting = {:user_login => 'ASC'} config.subform.columns = [] end end This code hasn't change with the update, but when I go in this page, I got this error: uninitialized constant Users /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:443:in `load_missing_constant' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in `const_missing' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:92:in `const_missing' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:361:in `constantize' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in `each' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in `constantize' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/string/inflections.rb:162:in `constantize' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:28:in `reverse_matches_for' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:24:in `each' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:24:in `reverse_matches_for' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:11:in `reverse' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold/data_structures/column.rb:117:in `autolink?' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold.rb:107:in `links_for_associations' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold/data_structures/columns.rb:62:in `each' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold/data_structures/columns.rb:62:in `each' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold.rb:106:in `links_for_associations' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold.rb:59:in `active_scaffold' /Users/Kiva/Documents/Projet-rpg/jeu/app/controllers/admin/user_controller.rb:11 I search since 2 days but I don't find the problem, can you help me please.

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• Rails Gem Install Problems: Google-Geocode

  - by spin-docta

  I'm try to install google-geocode for rails sudo gem install google-geocode but I get the following error. Any suggestions? Building native extensions. This could take a while... ERROR: Error installing google-geocode: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb checking for iconv.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for libxml/parser.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for libxslt/xslt.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for libexslt/exslt.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include,/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for xmlParseDoc() in -lxml2... no libxml2 is missing. try 'port install libxml2' or 'yum install libxml2' *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby --with-iconv-dir --without-iconv-dir --with-iconv-include --without-iconv-include=${iconv-dir}/include --with-iconv-lib --without-iconv-lib=${iconv-dir}/lib --with-xml2-dir --without-xml2-dir --with-xml2-include --without-xml2-include=${xml2-dir}/include --with-xml2-lib --without-xml2-lib=${xml2-dir}/lib --with-xslt-dir --without-xslt-dir --with-xslt-include --without-xslt-include=${xslt-dir}/include --with-xslt-lib --without-xslt-lib=${xslt-dir}/lib --with-xml2lib --without-xml2lib Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/nokogiri-1.4.0 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/nokogiri-1.4.0/ext/nokogiri/gem_make.out

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• Heroku Push Problem part 2 - Postgresql - PGError Relations does not exist - Ruby on Rails

  - by bgadoci

  Ok so got through my last problem with the difference between Postgresql and SQLite and seems like Heroku is telling me I have another one. I am new to ruby and rails so a lot of this stuff I can't decipher at first. Looking for a little direction here. The error message and PostsController Index are below. I checked my routes.rb file and all seems well there but I could be missing something. I will post if you need. Processing PostsController#index (for 99.7.50.140 at 2010-04-23 15:19:22) [GET] ActiveRecord::StatementInvalid (PGError: ERROR: relation "tags" does not exist : SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a.attnotnull FROM pg_attribute a LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum WHERE a.attrelid = '"tags"'::regclass AND a.attnum > 0 AND NOT a.attisdropped ORDER BY a.attnum ): PostsController#index def index @tag_counts = Tag.count(:group => :tag_name, :order => 'count_all DESC', :limit => 20) conditions, joins = {}, :votes @ugtag_counts = Ugtag.count(:group => :ugctag_name, :order => 'count_all DESC', :limit => 20) conditions, joins = {}, :votes @vote_counts = Vote.count(:group => :post_title, :order => 'count_all DESC', :limit => 20) conditions, joins = {}, :votes unless(params[:tag_name] || "").empty? conditions = ["tags.tag_name = ? ", params[:tag_name]] joins = [:tags, :votes] end @posts=Post.paginate( :select => "posts.*, count(*) as vote_total", :joins => joins, :conditions=> conditions, :group => "votes.post_id, posts.id ", :order => "created_at DESC", :page => params[:page], :per_page => 5) @popular_posts=Post.paginate( :select => "posts.*, count(*) as vote_total", :joins => joins, :conditions=> conditions, :group => "votes.post_id, posts.id", :order => "vote_total DESC", :page => params[:page], :per_page => 3) respond_to do |format| format.html # index.html.erb format.xml { render :xml => @posts } format.json { render :json => @posts } format.atom end end

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