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  • Return result of block passed to #scan during regex

    - by Oli
    I've searched and not been able to find the right way of doing what I'm trying to. I read a file line by line and want to create a new object from a regex on each line. I'm not using an XML parser because the data is not well formed and listed below is all I need to get from each line. I can't seem to get scan to return the result of the block. It just returns the original string. I have temporarily gotten around it by creating this temp variable, but I'm sure there is a better way. enum = File.foreach(filename) enum.map do |line| temp = nil line.scan(/<cab id="(\w+)" updates="(\d+)"/) { |a,b| temp = Cab.new(a,b) } temp end Thanks for any help.

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  • How does Facebook codes their Cropping tool?

    - by Trip
    I ask this because I am currently trying to work out my own technique, and there are huge strategic hangups for the entire site when your begin this. Of them are: Using jCrop and rMagick, it takes up a huge amount of processing ( to which I have backgrounded ). Because I have it backgrounded, I must by ajax develop a feature that auto-updates every five seconds to check when the backgrounding is done. Has anyone accomplished this with their sites? If so, what are some creative techniques you came across to keep the processing streamline, and the users happy?

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  • How to implement "short" nested vanity urls in rails?

    - by UnSandpiper
    I understand how to create a vanity URL in Rails in order to translate http://mysite.com/forum/1 into http://mysite.com/some-forum-name But I'd like to take it a step further and get the following working (if it is possible at all): Instead of: http://mysite.com/forum/1/board/99/thread/321 I'd like in the first step to get to something like this: http://mysite.com/1/99/321 and ultimately have it like http://mysite.com/some-forum-name/some-board-name/this-is-the-thread-subject. Is this possible?

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  • Using Cucumber or RSpec+Selenium to create end user documentation?

    - by carolclarinet
    Has anyone tried creating end user (potentially online, potentially to be printed) help/documentation out of your cucumber scenarios? Or taken screenshots for use in documentation using RSpec and Selenium RC's ability to do so? For Cucumber, I'm imagining something like: Scenario: If you want to add a link Given I am on the edit blog post page When I press the "add link" button And I type in a link URL "http://stackoverflow.com" And I click "OK" Then the blog post should have 1 link Translating to the documentation: If you want to add a link, go to the edit blog post page. Press the "add link" button and type a URL, like "http://stackoverflow.com", into the link URL field. Click "OK". Would it be worth my time to try and, for one, write something to parse my Cucumber features into documentation, and two, to write/structure my Cucumber features in such a way as to create good documentation? Would the resulting documentation end up sounding really boring without much variation in the structure? Is there anything else out there like this idea? Doxygen looks like it's more for code documentation than end-user documentation. What about automatically taking screenshots? This seems like a more fruitful path-- just reuse the code that takes a screenshot when an RSpec test fails and have it take one in prescribed situations. Is there a better way to do this?

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  • Session management in Rails (2.3)

    - by JussiR
    Apparently, after upgrading to Rails 2.3 my session storage has stopped working. I used to have this: session :session_expires = 3.years.from_now in my application_controller.rb, but now every time i close the browser (chrome) the session expires. I read from somewhere that session_expires would have changed to expire_after, but session :expire_after = 3.years.from_now didn't do any good eihter.

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  • :include and table aliasing

    - by dondo
    I'm suffering from a variant of the problem described here: ActiveRecord assigns table aliases for association joins fairly unpredictably. The first association to a given table keeps the table name. Further joins with associations to that table use aliases including the association names in the path... but it is common for app developers not to know about [other] joins at coding time. In my case I'm being bitten by a toxic mix of has_many and :include. Many tables in my schema have a state column, and the has_many wants to specify conditions on that column: has_many :foo, :conditions => {:state => 1}. However, since the state column appears in many tables, I disambiguate by explicitly specifying the table name: has_many :foo, :conditions => "this_table.state = 1". This has worked fine until now, when for efficiency I want to add an :include to preload a fairly deep tree of data. This causes the table to be aliased inconsistently in different code paths. My reading of the tickets referenced above is that this problem is not and will not be fixed in Rails 2.x. However, I don't see any way to apply the suggested workaround (to specify the aliased table name explicitly in the query). I'm happy to specify the table alias explicitly in the has_many statement, but I don't see any way to do so. As such, the workaround doesn't appear applicable to this situation (nor, I presume, in many 'named_scope' scenarios). Is there a viable workaround?

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  • How to create picture slideshows in a rails project? Flash or otherwise

    - by Janak
    In a rails project how would I create a picture slideshow? It could be generated as flash or use prototype or something else. I just want a series of images (as a sub-part of a web page, not be the whole page) to fade into each other, and to advance manually if clicked. It would be nice if I could do things like slowly zoom into the images I imagine there must be a plugin or something to handle this?

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  • Capistrano deploy:migrate Could not find rake-0.9.2.2 in any of the sources

    - by Kyle
    My Capistrano deploy:migrate task is set to run a simple rake db:migrate command, as follows: env PATH=/home/user/.gems/bin sh -c 'cd /home/user/app/releases/20121003140503 && rake RAILS_ENV=production db:migrate' When I run this task during an ssh session manually it completes successfully. However when I run from my local development box, I receive the following error: ** [out :: app] Could not find rake-0.9.2.2 in any of the sources I am able to locate my rake gem by typing which rake via ssh (/home/user/.gems/bin/rake) and rake --version gives me "rake, version 0.9.2.2," so I don't understand why this command fails via Capistrano?

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  • SQLite trigger to update Summary Counts

    - by jrhicks
    Consider the following two (hypothetical) tables Temperature * day * time * lake_name * station * temperature_f Temperature_summary * day * lake_name * station * count_readings_over_75f * count_readings_below_75f How can I write an SQLite Trigger to update the temperature_summary table on insert. I want to increment the count. Thank You, Jeff

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  • Turn link to a jQuery icon

    - by Justin Meltzer
    I want to turn two "voting" links into jQuery UI icons. One is the upvote link that should be an icon with an up arrow, and one is the downvote link that should be an icon with a down arrow. Here is one of the link's RoR code: <%= link_to "+1", video_votes_path( :video_id => video.id, :type => "up" ), :method => :post, :remote => true %> I also want to change the color of the icon when it is clicked, and when it is clicked again, it should change back to its original color. How can I do all of this?

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  • How can I add two models in one form, where one model is a has_many :through?

    - by Angela
    How do I model having multiple Addresses for a Company and assign a single Address to a Contact? Contacts belong_to a Company. A Company has_many Contacts. A Company also has_many Addresses. And each Contact has_one Address. I want to be able, whenever I create a New Contact, to access all the addresses in all Contacts that belong to the Company. Here is are my Models: class Company < ActiveRecord::Base attr_accessible :name, :phone, :addresses has_many :contacts has_many :addresses, :through => :contacts end class Contact < ActiveRecord::Base attr_accessible :first_name, :last_name, :title, :phone, :fax, :email, :company, :date_entered, :campaign_id, :company_name, :address belongs_to :company has_one :address accepts_nested_attributes_for :address end class Address < ActiveRecord::Base attr_accessible :street1 has_many :contacts end How do I create the View in the _form for Contacts so that I can 1) Add an Address when creating a Contact; 2) Display the options of the Address. Here is how I am doing step 1, which is just to add a new address for a new contact: <% f.fields_for :addresses do |builder| %> <p> <%= builder.label :street1, "Street 1" %> </br> <%= builder.text_field :street1 %> <p> Right now, what I have doesn't work. The console says I cannot mass-assign addresses when I hit "submit" on this New contact form.

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  • How to update existing record if the one being saved has the same key?

    - by Pavel Shved
    MySQL has a very nice option for INSERT statement, which is particularly helpful for join tables without the id column. It inserts a record, but, instead of throwing an error if its key clashed with the existing one, that record is updated. Here's an example: INSERT INTO table (key1,key2,data) VALUES (1,2,3) ON DUPLICATE KEY UPDATE c=3; How to achieve the same with ActiveRecord? The code looks like this: class Model < ActiveRecord::Base belongs_to :key1 belongs_to :key2 end record = Model.new record.key1 = key1 record.key2 = key2 record.data = 'new data' record.WHAT? #Inserts or updates `data` for the existing record

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  • Is there a way to inspect all controller variables at once in Rails?

    - by m.u.sheikh
    I am exploring an big controller method, with about 10 or so instance variables. Some of them are set in before_filter methods, and some others inside the method itself. I want to inspect them with puts, but dont want to write all of them out example: puts "var1: #{@var1.inspect}....var15: #{@var15.inspect}" Is there a generic method that will display all the instance variables with an @ sign set so far in the current method? If not, what is the next best way to inspect all of them at once without having to write all of them in a puts statement?

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  • Nested Resource - How to pass needed keys, and attribute to update?

    - by Jason B
    My nested resources are working for form_for updates, but I have a few toggles that I need to setup to change a status field. So I am using link_to, and accessing the url helper. link_to "toggle", edit_project_expense_path(@project[:id],expense_item[:id]) routes.rb resources :projects do resources :expenses end match '/submit_expense/:id' => 'expenses#submit_expense', :as => 'submit_expense' rake routes edit_project_expense GET /projects/:project_id/expenses/:id/edit(.:format) expenses#edit My question is: How can I also send along :approval_status = "1", with my link_to?

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  • Can an ActiveRecord before_save filter halt the save without halting the transaction?

    - by Michael Boutros
    Is there any way for a before_save filter to halt the entire save without halting the transaction? What I'm trying to do is have a "sample" version of my model that the user can interact with and save but the changes themselves are never actually saved. The following will halt the transaction and (naturally) return false when I call @model.update_attributes: before_filter :ignore_changes_if_sample def ignore_changes_if_sample if self.sample? return false end end Thanks!

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  • Create select based on routing, how?

    - by huug
    I am trying to implement navigation like in Tree Based Navigation but based on url's defined in routes.rb (named routes, resources, ...). Is it possible to retreive a collection of all routes defined in routes.rb? So I can use it in a select like this: <%= f.collection_select :url, Route.all, :url, :name %> Tnx!

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  • Rails + Passenger CSS problem

    - by Dan
    I'm trying to deploy my first Rails app. At first, I was getting the following error: ActionView::TemplateError (Permission denied) I set the permissions of the stylesheets folder to 777 (just for now until I work out what's going wrong) and the application started to work. However, it is not picking up any of the stylesheets (everything is displayed in plain text). If I view the source code and click the CSS links, I just get a blank page. Javascripts however, seem to be working just fine. VHost Config: <VirtualHost *:80> ServerName xxxx.xxx.com DocumentRoot /home/myapp/public <Directory /home/myapp/public> Allow from All AllowOverride all Options -MultiViews </Directory> </VirtualHost> Can anyone help? Any advice appreciated. Thanks.

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  • Failing rspec Rails Tutorial Chapter 9.3

    - by greyghost24
    I am failing 3 tests and I have found numerous examples on here and on on the internet in general but I can't seem to find where I'm going wrong. Thanks for any help. 1) User pages signup with valid information edit page Failure/Error: before { visit edit_user_path(user) } ActionView::Template::Error: undefined method `model_name' for NilClass:Class # ./app/views/users/edit.html.erb:6:in `_app_views_users_edit_html_erb___4113112884365867193_70232486166220' # ./spec/requests/user_pages_spec.rb:96:in `block (5 levels) in <top (required)>' 2) User pages signup with valid information edit page Failure/Error: before { visit edit_user_path(user) } ActionView::Template::Error: undefined method `model_name' for NilClass:Class # ./app/views/users/edit.html.erb:6:in `_app_views_users_edit_html_erb___4113112884365867193_70232486166220' # ./spec/requests/user_pages_spec.rb:96:in `block (5 levels) in <top (required)>' 3) User pages signup with valid information edit page Failure/Error: before { visit edit_user_path(user) } ActionView::Template::Error: undefined method `model_name' for NilClass:Class # ./app/views/users/edit.html.erb:6:in `_app_views_users_edit_html_erb___4113112884365867193_70232486166220' # ./spec/requests/user_pages_spec.rb:96:in `block (5 levels) in <top (required)>' Finished in 0.26515 seconds 3 examples, 3 failures Failed examples: rspec ./spec/requests/user_pages_spec.rb:100 # User pages signup with valid information edit page rspec ./spec/requests/user_pages_spec.rb:99 # User pages signup with valid information edit page rspec ./spec/requests/user_pages_spec.rb:101 # User pages signup with valid information edit page authentication_pages_spec.rb require 'spec_helper' describe "Authentication" do subject { page } describe "signin page" do before { visit signin_path } it { should have_selector('h1', text: 'Sign in') } it { should have_selector('title', text: 'Sign in') } end describe "signin" do before { visit signin_path } describe "with invalid information" do before { click_button "Sign in" } it { should have_selector('title', text: 'Sign in') } it { should have_selector('div.alert.alert-error', text: 'Invalid') } describe "after visiting another page" do before { click_link "Home" } it { should_not have_selector('div.alert.alert-error') } end end describe "with valid information" do let(:user) { FactoryGirl.create(:user) } before do fill_in "Email", with: user.email fill_in "Password", with: user.password click_button "Sign in" end it { should have_selector('title', text: user.name) } it { should have_link('Profile', href: user_path(user)) } it { should have_link('Sign out', href: signout_path) } it { should_not have_link('Sign in', href: signin_path) } describe "followed by signout" do before { click_link "Sign out" } it { should have_link('Sign in') } end end end end Here is the users_controller: class UsersController < ApplicationController def show @user = User.find(params[:id]) end def new @user = User.new end def create @user = User.new(params[:user]) if @user.save sign_in @user flash[:success] = "Welcome to the Sample App!" redirect_to @user else render 'new' end end end def edit @user = User.find(params[:id]) end edit.html.erb: <% provide(:title, "Edit user") %> <h1>Update your profile</h1> <div class="row"> <div class="span6 offset3"> <%= form_for(@user) do |f| %> <%= render 'shared/error_messages' %> <%= f.label :name %> <%= f.text_field :name %> <%= f.label :email %> <%= f.text_field :email %> <%= f.label :password %> <%= f.password_field :password %> <%= f.label :password_confirmation, "Confirm Password" %> <%= f.password_field :password_confirmation %> <%= f.submit "Save changes", class: "btn btn-large btn-primary" %> <% end %> <%= gravatar_for @user %> <a href="http://gravatar.com/emails">change</a> </div> here is the user_pages_spec: require 'spec_helper' describe "User pages" do subject { page } describe "profile page" do let(:user) { FactoryGirl.create(:user) } before { visit user_path(user) } it { should have_selector('h1', text: user.name) } it { should have_selector('title', text: user.name) } end describe "signup page" do before { visit signup_path } it { should have_selector('h1', text: 'Sign up') } it { should have_selector('title', text: full_title('Sign up')) } end describe "signup" do before { visit signup_path } describe "with invalid information" do it "should not create a user" do expect { click_button "Create my account" }.not_to change(User, :count) end describe "error messages" do before { click_button "Create my account" } it { should have_selector('title', text: 'Sign up') } it { should have_content('error') } end end describe "with valid information" do before do fill_in "Name", with: "Example User" fill_in "Email", with: "[email protected]" fill_in "Password", with: "foobar" fill_in "Confirmation", with: "foobar" end it "should create a user" do expect do click_button "Create my account" end.to change(User, :count).by(1) end describe "after saving the user" do before { click_button "Create my account" } let(:user) { User.find_by_email('[email protected]') } it { should have_selector('title', text: user.name) } it { should have_selector('div.alert.alert-success', text: 'Welcome') } it { should have_link('Sign out') } end end end describe "signup page" do before { visit signup_path } it { should have_selector('h1', text: 'Sign up') } it { should have_selector('title', text: full_title('Sign up')) } end describe "signup" do before { visit signup_path } let(:submit) { "Create my account" } describe "with invalid information" do it "should not create a user" do expect { click_button submit }.not_to change(User, :count) end end describe "with valid information" do before do fill_in "Name", with: "Example User" fill_in "Email", with: "[email protected]" fill_in "Password", with: "foobar" fill_in "Confirmation", with: "foobar" end it "should create a user" do expect { click_button submit }.to change(User, :count).by(1) end describe "edit" do let(:user) { FactoryGirl.create(:user) } before { visit edit_user_path(user) } describe "page" do it { should have_selector('h1', text: "Update your profile") } it { should have_selector('title', text: "Edit user") } it { should have_link('change', href: 'http://gravatar.com/emails') } end describe "with invalid information" do before { click_button "Save changes" } it { should have_content('error') } end end end end end edit: users_controllers.rb was formatted incorrectly. It should look like this: class UsersController < ApplicationController def show @user = User.find(params[:id]) end def new @user = User.new end def create @user = User.new(params[:user]) if @user.save sign_in @user flash[:success] = "Welcome to the Sample App!" redirect_to @user else render 'new' end end def edit @user = User.find(params[:id]) end end

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  • Authlogic: passwords saved in the DB are not working as expected.

    - by user570459
    Hello everyone, Im having trouble with authlogic on my production server. Im able to update passwords in the database but when i try to validate a user using the new password, the validation fails. Please check the below console output. Notice how the salt and crypted_password fields get update before and after the new password is saved. The issue is only on my production server (running passenger). Everything works fine on my development machine. => #<User id: 3, login: "saravk", email: "[email protected]", crypted_password: "9bc86247105e940bb748ab680c0e77d9c44a82ea", salt: "WdVpQIdwl68k8lJWOU"> irb(main):003:0> u.password = "kettik123" => "kettik123" irb(main):004:0> u.password_confirmation = "kettik123" => "kettik123" irb(main):005:0> u.save! => true irb(main):006:0> u.valid_password?("kettik123") => true irb(main):007:0> u.reload => #<User id: 3, login: "saravk", email: "[email protected]", crypted_password: "f059007c56f498a12c63209c849c1e65bb151174", salt: "lVmmczhyGE0gxsbV421A"> irb(main):008:0> u.valid_password?("kettik123") => false The authlogic configuration in my User model.. class User < ActiveRecord::Base acts_as_authentic do |c| c.login_field :email c.validate_login_field false c.validate_email_field false c.perishable_token_valid_for = 1.day c.disable_perishable_token_maintenance = true end I use the email field as the main key for the user. Also the email field is allowed to be blank in some cases (eg a facebook user) Also i belive that my schema is proper (in terms of the length of the salt & crypted password fields) create_table "users", :force => true do |t| t.string "login" t.string "email" t.string "crypted_password", :limit => 128, :default => "" t.string "salt", Any help on this would be highly appreciated. Thanks.

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  • Attributes passed to .build() dont show up in the query

    - by Sebastian
    Hi there guys! Hope your all enjoying your hollydays. Ive run into a pretty funny problem when trying to insert rows into a really really simple database table. The basic idea is pretty simple. The user selects one/multiple users in a multiselect which are supposed to be added to a group. This piece of code will insert a row into the user_group_relationships table, but the users id always @group = Group.find(params[:group_id]) params[:newMember][:users].each do |uid| # For debugging purposes. puts 'Uid:'+uid @rel = @group.user_group_relationships.build( :user_id => uid.to_i ) @rel.save end The user id always gets inserted as null even though it is clearly there. You can see the uid in this example is 5, so it should work. Uid:5 ... SQL (0.3ms) INSERT INTO "user_group_relationships" ("created_at", "group_id", "updated_at", "user_id") VALUES ('2010-12-27 14:03:24.331303', 2, '2010-12-27 14:03:24.331303', NULL) Any ideas why this fails?

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  • Open source equivelants to VS / web reference proxy classes?

    - by seraphym
    As an ASP.NET developer, I'm used to working with how VS/C# transparently autogens proxy classes for web references (yes, I know, we're spoiled), but now that I'm creating documentation for more than one coding platform I'm trying to discover what the equivelant to that is in any other framework. So is there a similar way to work transparently with web reference proxy classes for say, RoR, PHP, and Python? And if there's nothing integrated, are there tools you recommend to autogen the proxy classes, or do you recommend to roll custom classes?

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  • "rake test" doesn't load fixtures?

    - by Pavel K.
    when i run rake test --trace here's what happens ** Invoke test (first_time) ** Execute test ** Invoke test:units (first_time) ** Invoke db:test:prepare (first_time) ** Invoke db:abort_if_pending_migrations (first_time) ** Invoke environment (first_time) ** Execute environment ** Execute db:abort_if_pending_migrations ** Execute db:test:prepare ** Invoke db:test:load (first_time) ** Invoke db:test:purge (first_time) ** Invoke environment ** Execute db:test:purge ** Execute db:test:load ** Invoke db:schema:load (first_time) ** Invoke environment ** Execute db:schema:load ** Execute test:units /usr/bin/ruby1.8 -I"lib:test".... (and after that fails because there's no fixtures loaded) why doesn't it load fixtures (i thought that would be default behaviour) and how do i make it load fixtures before executing tests??? p.s. my test/test_helper.rb content is: ENV["RAILS_ENV"] = "test" require File.expand_path(File.dirname(__FILE__) + "/../config/environment") require 'test_help' class ActiveSupport::TestCase self.use_transactional_fixtures = true self.use_instantiated_fixtures = false fixtures :all end (rails 2.3.4)

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  • Problem in mutiple :dependent=> :destroy when multiple polymorphic is true

    - by piemesons
    I have four models question, answer, comment and vote.Consider it same as stackoverflow. Question has_many comments Answers has_many comments Questions has_many votes answers has_many votes comments has_many votes Here are the models (only relevant things) class Comment < ActiveRecord::Base belongs_to :commentable, :polymorphic => true has_many :votes, :as => :votable, :dependent => :destroy end class Question < ActiveRecord::Base has_many :comments, :as => :commentable, :dependent => :destroy has_many :answers, :dependent => :destroy has_many :votes, :as => :votable, :dependent => :destroy end class Vote < ActiveRecord::Base belongs_to :votable, :polymorphic => true end class Answer < ActiveRecord::Base belongs_to :question, :counter_cache => true has_many :comments, :as => :commentable , :dependent => :destroy end Now the problem is whenever i am trying to delete any question/answer/comment its giving me an error NoMethodError in QuestionsController#destroy undefined method `each' for 0:Fixnum if i remove this line from any of the model (question/answer/comment) has_many :votes, :as => :votable, :dependent => :destroy then it works perfectly. It seems there is a problem while deleting the records active record is not able to find out the proper path because of multiple joins within the tables.

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