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• Sinatra and Markaby: "Template Engine Not Found"

  - by marienbad

  Using the standard gem for using Markaby with Sinatra, listed at http://www.sinatrarb.com/extensions-wild.html sudo gem install markaby Password: Successfully installed builder-2.1.2 Successfully installed markaby-0.5 2 gems installed sudo gem install sbfaulkner-sinatra-markaby -s http://gems.github.com Password: Successfully installed sbfaulkner-sinatra-markaby-0.9.2.2 1 gem installed require 'rubygems' require 'sinatra' require 'sinatra/markaby' get '/' do markaby :template end RuntimeError at / Template engine not found: mab

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• RESTful design, how to name pages outside CRUD et al?

  - by sscirrus

  Hi all, I'm working on a site that has quite a few pages that fall outside my limited understanding of RESTful design, which is essentially: Create, Read, Update, Delete, Show, List Here's the question: what is a good system for labeling actions/routes when a page doesn't neatly fall into CRUD/show/list? Some of my pages have info about multiple tables at once. I am building a site that gives some customers a 'home base' after they log on. It does NOT give them any information about themselves so it shouldn't be, for example, /customers/show/1. It does have information about companies, but there are other pages on the site that do that differently. What do you do when you have these situations? This 'home-base' is shown to customers and it mainly has info about companies (but not uniquely so). Second case: I have a table called 'Matchings' in between customers and companies. These matchings are accessed in completely different ways on different parts of the site (different layouts, different CSS sheets, different types of users accessing them, etc. They can't ALL be matchings/show. What's the best way to label the others? Thanks very much. =)

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• Downsides to using FakeWeb compared to writing mocks for testing

  - by ajmurmann

  I never liked writing mocks and a while ago someone here recommended to use FakeWeb. I immediately fell completely in love with FakeWeb. However, I have to wonder if there is a downside to using FakeWeb. It seems like mocks are still much more common, so I wonder what I am missing that's wrong with using FakeWeb instead. Is there a certain kind of error you can't cover with Fakeweb or is it something about the TDD or BDD process?

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• Adding STI to Existing Table...

  - by keruilin

  I want to add STI to an existing table using a custom type column. Let's call this taste_type whose corresponding model is Fruit. In the Fruit model I have: set_inheritance_column :taste_type In my migration to add STI I have: class AddSTI < ActiveRecord::Migration def self.up add_column :fruits, :taste_type, :string, :limit => 100, :null => false Fruit.reset_column_information Fruit.find_by_id(1).update_attributes({:taste_type => 'Sour'}) end def self.down remove_column :fruits, :taste_type end end When I run the migration, I get the following error: Mysql::Error: Column 'taste_type' cannot be null: ... Any idea what's going? I can get the migration to run if I comment the set_inheritance_column in the Fruit model, then uncomment it after I run the migration. Obviously, I don't want to do this, however.

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• 256 colors, foreground and background

  - by push.cx

  This is a tale of two scripts and is related to a previous question. The two scripts are at http://gist.github.com/50692. The ansi.rb script displays all 256 colors on all 256 background colors. The ncurses.rb script displays all 256 foreground colors but the background displays the basic 16 and then seems to cycle through various attributes like blinking and reverse video. So what gives? Is this the bug in ncurses that it uses a signed integer for color pairs? (ie 'tput colors' says 256 but 'tput pairs' says 32767 instead 65536) It seems like if that were the case the first half of the colors pairs would display properly but the second half would repeat or get into the attributes as the int wraps.

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• Guidelines for calling controller methods in helper modules?

  - by keruilin

  Few questions: Is it possible to call a controller method in a helper module (e.g., application helper)? If so, how does the helper handle the rendering of views? Ignore it? In what instances would you want to call a controller method from a helper? Is it bad practice? Do you have any sample code where you're calling controller methods in helper?

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• How to make a small engine like Wolfram|Alpha?

  - by Koning WWWWWWWWWWWWWWWWWWWWWWW

  Lets say I have three models/tables: operating_systems, words, and programming_languages: # operating_systems name:string created_by:string family:string Windows Microsoft MS-DOS Mac OS X Apple UNIX Linux Linus Torvalds UNIX UNIX AT&T UNIX # words word:string defenitions:string window (serialized hash of defenitions) hello (serialized hash of defenitions) UNIX (serialized hash of defenitions) # programming_languages name:string created_by:string example_code:text C++ Bjarne Stroustrup #include <iostream> etc... HelloWorld Jeff Skeet h AnotherOne Jon Atwood imports 'SORULEZ.cs' etc... When a user searches hello, the system shows the defenitions of 'hello'. This is relatively easy to implement. However, when a user searches UNIX, the engine must choose: word or operating_system. Also, when a user searches windows (small letter 'w'), the engine chooses word, but should also show Assuming 'windows' is a word. Use as an <a href="etc..">operating system</a> instead. Can anyone point me in the right direction with parsing and choosing the topic of the search query? Thanks. Note: it doesn't need to be able to perform calculations as WA can do.

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• Saving a record in Authlogic table

  - by denniss

  I am using authlogic to do my authentication. The current model that serves as the authentication model is the user model. I want to add a "belongs to" relationship to user which means that I need a foreign key in the user table. Say the foreign key is called car_id in the user's model. However, for some reason, when I do u = User.find(1) u.car_id = 1 u.save! I get ActiveRecord::RecordInvalid: Validation failed: Password can't be blank My guess is that this has something to do with authlogic. I do not have validation on password on the user's model. This is the migration for the user's table. def self.up create_table :users do |t| t.string :email t.string :first_name t.string :last_name t.string :crypted_password t.string :password_salt t.string :persistence_token t.string :single_access_token t.string :perishable_token t.integer :login_count, :null => false, :default => 0 # optional, see Authlogic::Session::MagicColumns t.integer :failed_login_count, :null => false, :default => 0 # optional, see Authlogic::Session::MagicColumns t.datetime :last_request_at # optional, see Authlogic::Session::MagicColumns t.datetime :current_login_at # optional, see Authlogic::Session::MagicColumns t.datetime :last_login_at # optional, see Authlogic::Session::MagicColumns t.string :current_login_ip # optional, see Authlogic::Session::MagicColumns t.string :last_login_ip # optional, see Authlogic::Session::MagicColumns t.timestamps end end And later I added the car_id column to it. def self.up add_column :users, :user_id, :integer end Is there anyway for me to turn off this validation?

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• Rspec Faker has_one fail in view

  - by Victor Martins

  I' trying to fix this for hours... I have this on a controller rspec test: it "show action should render show template" do task = Task.make task.mission = Mission.make get :show, :id => task response.should render_template(:show) end But it fails rendering the view because of this: <%=h @task.mission.name %> I don't get it... :/

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• thoughs on using Alpha Five v10 with Codeless AJAX for building an AJAX database app in a short amou

  - by william Hunter

  I need to build an AJAX application against our MS SQL Server database for my company. the app has to have user permissions and reporting and is pretty complex. I am really under the gun in terms of time. The company that I work for needs the app for an important project launch. A colleague/friend of mine in a different company recommended that I look at a product from Alpha Software called Alpha Five v10 with Codeless AJAX. He has told me that he has used it extensively and that it saves him a "serious boat load of time" and he says that he has not run into limitations because you can also write your own JavaScript or you wire in JQERY. Before I commit to Alpha Five v10, I would like to get any other opinions? Thanks. Norman Stern. Chicago

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• Trouble with RSpec's with method

  - by Thiago

  Hi there, I've coded the following spec: it "should call user.invite_friend" do user = mock_model(User, :id = 1) other_user = mock_model(User, :id = 2) User.stub!(:find).with(user.id).and_return(user) User.stub!(:find).with(other_user.id).and_return(other_user) user.should_receive(:invite_friend).with(other_user) post :invite, { :id = other_user.id }, {:user_id = user.id} end But I'm getting the following error when I run the specs NoMethodError in 'UsersController POST invite should call user.invite_friend' undefined method `find' for # Class:0x86d6918 app/controllers/users_controller.rb:144:in `invite' ./spec/controllers/users_controller_spec.rb:13: What's the mistake? Without .with it works just fine, but I want different return values for different arguments to the stub method. The following controller's actions might be relevant: def invite me.invite_friend(User.find params[:id]) respond_to do |format| format.html { redirect_to user_path(params[:id]) } end end def me User.find(session[:user_id]) end

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• Is bundler ready for prime time?

  - by schof

  I'm considering using bundler for deploying a Spree app on Heroku. My question is, is bundler ready for prime time? I know there are some rough edges but I guess I'd like to know more about what the current limitations are and figure out if this is an option for us. Specifically, I'd like to do the git repository stuff git "git://github.com/indirect/rails3-generators.git" gem "rails3-generator Does anyone want to encourage/discourage me from this course of action? Anybody have experience with this on Heroku in particular?

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• Represent multiple Null/Generic objects in an ActiveRecord association?

  - by slothbear

  I have a Casefile model that belongs_to a Doctor. In additional to all the "real" doctors, there are several generic Doctors: "self-treated", "not specified", and "removed" (it used to have a real doctor, but no longer does). I suspect there will be even more generic values in the future. I started with special "doctors" in the database, generated from seed. The generic Doctors only need to respond to the "name" and "real_doctor?" methods. This worked with one, was strained with two, and now feels completely broken. I want to change the behavior and can't figure out how to test it, a bad sign. Creating all the generic objects for testing is also trouble, including fake values to pass validation of the required Doctor attributes. The Null Object pattern works well for one generic object. The "name" method could check casefile.doctor.nil? and return "self-treated", as demonstrated by Craig Ambrose. What pattern should I use when there are multiple generic objects with very limited state?

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• rpsec install failed

  - by chenge2k

  screen: E:\ir\InstantRails\rails_appsgem install rspec Attempting local installation of 'rspec' Local gem file not found: rspec*.gem Attempting remote installation of 'rspec' ERROR: While executing gem ... (Gem::GemNotFoundException) Could not find rspec ( 0) in the repository my env: InstantRails 1.3a on windows thanks for help!

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• Webdav -- GET on a directory

  - by Joe Cannatti

  I am beginning to build a tool that uses WebDAV. I am having trouble wrapping my head around something here. I think I am missing something conceptual. I can use PUT's to add files to the server. I can use GET's to read files from the server, but when I try to use GET on a directory I get a 403:Forbidden. I am using basic authentication. My code in MacRuby is as follows Net::HTTP.start('localhost') do |http| res = Net::HTTP::Get.new('http://localhost/webdav/') res.basic_auth 'jcannatti', 'webdav' http.request res end this returns <Net::HTTPForbidden 403 Forbidden readbody=true> however this Net::HTTP.start('localhost') do |http| res = Net::HTTP::Put.new('http://localhost/webdav/gorilla.txt') res.body = "testetsetest" res.basic_auth 'jcannatti', 'webdav' http.request res end returns <Net::HTTPCreated 201 Created readbody=true> What should happen when calling a GET on a WebDAV directory when everything is working correctly? thanks

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• class method or named_scope?

  - by Hadi

  i would like to have your opinion in a project i am currently working on. class Product has_many :orders end class Order attr_accessor :deliverable # to contain temporary data on how many items can be delivered for this order belongs_to :product end somehow i want to have Order.all_deliverable that will calculate the Product's quantity, subtract from list of Orders until the Product is empty or there is no more Order for this Product to illustrate Product A, quantity: 20 Product B, quantity: 0 Order 1, require Product A, quantity: 12 Order 2, require Product B, quantity: 10 Order 3, require Product A, quantity: 100 so if i call Order.all_deliverable, it will give Order 1, deliverable:12 Order 3, deliverable: 8 #(20-12) i have been thinking on using named_scope, but i think the logic will be too complex to be put in a named_scope. Any suggestion? the pseudo code for all_deliverable will be something like this: go to each orders find the remaining quantity for specific product deduct the product to max amount of order, if product is not enough, add the maximum product add to the order end From what i read around in the web, named_scope deal mostly like find and have not many method calling and looping.

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• How do I set a time in a time_select view helper?

  - by brad

  I have a time_select in which I am trying to set a time value as follows; <%= f.time_select :start_time, :value => (@invoice.start_time ? @invoice.start_time : Time.now) %> This always produces a time selector with the current time rather than the value for @invoice.start_time. @invoice.start_time is in fact a datetime object but this is passed to the time selector just fine if I use <%= f.time_select :start_time %> I guess what I'm really asking is how to use the :value option with the time_select helper. Attempts like the following don't seem to produce the desired result; <%= f.time_select :start_time, :value => (Time.now + 2.hours) %> <%= f.time_select :start_time, :value => "14:30" %>

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• Discover the environment and relative path of the running application

  - by Shyam

  Hi, While playing with RubyCocoa, I keep progressing with my idea for my application. Because my application will be going to use configuration files, I would like to know how I discover the relative path to store these inside my application structure (or if a better idea emerges, please elaborate also the "why"). Also good for me to know is to discover environment variables, such as operating system version, the amount of memory that is available and such. Hyperlinks would be awesome too. Please notice I use RubyCocoa and thank you for your feedback, comments and answers!

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• Heroku deployment: connection refused

  - by Toby Hede

  I have suddenly run into an issue deploying to Heroku. I created a new app, went to push and now see: ssh: connect to host heroku.com port 22: Connection refused My other previously working Heroku apps no longer work, receiving the same error. Other Heroku commands work (create, info, db:push). I can SSH to other services, so it doesn't look like it's my machine. Any ideas?

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• Sinatra application running on Dreamhost suddenly not working

  - by jbrennan

  My Sinatra application was running fine on Dreamhost until a few days ago (I'm not sure precisely when it went bad). Now when I visit my app I get this error: can't activate rack (~> 1.1, runtime) for ["sinatra-1.1.2"], already activated rack-1.2.1 for [] I have no idea how to fix this. I've tried updating all my gems, then touching the app/tmp/restart.txt file, but still no fix. I hadn't touched any files of my app, nor my Dreamhost account. It just busted on its own (my guess is DH changed something on their server which caused the bust). When I originally deployed my app, I had to go through some hoops to get it working, and I seem to think I was using gems in a custom location, but I can't remember exactly where or how. I don't know my way around Rack/Passenger very well. Here's my config.ru: (mostly grafted from around the web, I don't fully understand it) ENV['RACK_ENV'] = 'development' if ENV['RACK_ENV'].empty? #### Make sure my own gem path is included first ENV['GEM_HOME'] = "#{ENV['HOME']}/.gems" ENV['GEM_PATH'] = "#{ENV['HOME']}/.gems:" require 'rubygems' Gem.clear_paths ## NB! key part require 'sinatra' set :env, :production disable :run require 'MY_APP_NAME.rb' run Sinatra::Application

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• How to define one-to-many connection between a same model through another model

  - by Mekajiki

  I want to define one-to-many relationship as follows; User has one introducer User has many newcomers(who is introduced by the user) Use "Introduction" model instead of adding a column to users table. My table and model definition is as follows; DB Scheme: create_table "introductions", force: true do |t| t.integer "introducer_id" t.integer "newcomer_id" t.datetime "created_at" t.datetime "updated_at" User model: class User < ActiveRecord::Base has_many :introductions, foreign_key: :introducer_id has_many :newcomers, through: :introductions, source: :newcomer belongs_to :introduction, foreign_key: :newcomer_id belongs_to :introducer end Introduction model: class Introduction < ActiveRecord::Base belongs_to :introducer, class_name: 'User' belongs_to :newcomer, class_name: 'User' end This works fine: user1.newcomers.push user2 but, user2.introducer # => nil How can I define belongs_to relationship correctly?

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• Is there any web service for getting tidal information?

  - by thor

  Has anyone come across a web service or plugin/code/calculation for getting information on tides - namely high and low tide times? I only need this information for one location (outwith the US) but I need it on an ongoing basis so a web service that I can hit once a day or something would be ideal.

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• Web Application Error Reporting

  - by Herr Kaleun

  Hello Friends, there was a web application, that you could configure so that over the api, your app could post the error logs into that application. it was a paid service and the free version allowed you to do like 1 report a minute. if any of you remember this service, please post it as an answer. thank you :)

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• Download all image or create zip file of all uploads from the gallary contained uploads

  - by Arpit Vaishnav

  I am on the photo sharing site , and i want to give functionality to download all the images available in the gallery ,, I have taken gallery in a relation where i can get all the iamges by @gallery.uploads , Now what i want is to download this all files , or if its possible to create any zipfile so that we can download that one file containing uploads inside the gallery , thanks

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• Email Collector / Implementation

  - by Tian

  I am implementing a simple RoR webpage that collect emails from visitors and store them as objects. I'm using it as a mini-project to try RoR and BDD. I can think of 3 features for Cucumber: 1. User submits a valid email address 2. User submits an existing email address 3. User submits an invalid email My question is, for scenarios 2 and 3, is it better to handle this via the controller? or as methods in a class? Perhaps something that throws errors if an instance is instantiated in sceanrio 2 or 3? Implementation is below, love to hear some code reviews in addition to answers to questions above. Thanks! MODEL: class Contact < ActiveRecord::Base attr_accessor :email end VIEW: <h1>Welcome To My Experiment</h1> <p>Find me in app/views/welcome/index.html.erb</p> <%= flash[:notice] %> <% form_for @contact, :url => {:action => "index"} do |f| %> <%= f.label :email %><br /> <%= f.text_field :email %> <%= submit_tag 'Submit' %> <% end %> CONTROLLER: class WelcomeController < ApplicationController def index @contact = Contact.new unless params[:contact].nil? @contact = Contact.create!(params[:contact]) flash[:notice] = "Thank you for your interest, please check your mailbox for confirmation" end end end

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