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  • Validation not bubbling up to my other models.

    - by DJTripleThreat
    Ok, I have a relationship between People, Users and Employees such that All Employees are Users and all Users are People. Person is an abstract class that User is derived from and Employee is derived from that. Now... I have an EmployeesController class and the create method looks like this: def create @employee = Employee.new(params[:employee]) @employee.user = User.new(params[:user]) @employee.user.person = Person.new(params[:person]) respond_to do |format| if @employee.save flash[:notice] = 'Employee was successfully created.' format.html { redirect_to(@employee) } format.xml { render :xml => @employee, :status => :created, :location => @employee } else format.html { render :action => "new" } format.xml { render :xml => @employee.errors, :status => :unprocessable_entity } end end end As you can see, when I'm using the :polymorphic => true clause, the way you access the super class is by doing something like @derived_class_variable.super_class_variable.super_super_etc. The Person class has a validates_presence_of :first_name and when it is satisfied, on my form, everything is OK. However, if I leave out the first name, it won't prevent the employee from being saved. What happens is that the employee record is saved but the person record isn't (because of the validation). How can I get the validation errors to show up in the flash object?

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  • How to turn off auto_increment in Rails Active Record

    - by Darth
    Is it possible to create primary key without auto_increment flag in ActiveRecord? I can't do create table :blah, :id => false because I want to have primary key index on the column. I looked up documentation but didn't find anything useful. Is it possible to create primary key without auto_increment?

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  • Using jQuery UI with Rails

    - by Steve
    Hi, I am using jQuery in my Rails App. But when I try to turn my button to jQueryUI(Cupertino theme) button, it does not appear to be look like a jQuery UI Themed button. jQuery works because I am using it for Ajax and it works properly. I have pasted the code. Please tell me whether I am doing it wrongly <%=javascript_include_tag "jquery-1.4.2.min","jquery-ui-1.8.1.min","jquery.nivo.slider.pack","application"%> <input type = submit id = "add" name = "add" value = " Add " /> $("#add").button(); Thanks

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  • Rails CSS not Loading using Heroku

    - by eWizardII
    I have the following site set up here on Heroku - http://www.peerinstruction.net/users/sign_up the issue is that I have updated the css yet it is not being actively reflected on the site, it just shows a textbox, with some edited/custom fonts. I have attached the css file in the following gist - https://gist.github.com/f74b626c54ecbb60bbde The signup page controller: !!! Strict %html %head %title= yield(:title) || "Untitled" = stylesheet_link_tag 'application', 'web-app-theme/base', 'web-app-theme/themes/activo/style', 'web-app-theme/override' = javascript_include_tag :defaults = csrf_meta_tag = yield(:head) %body #container #header %h1 %a{:href => "/"} Peer Instruction Network #user-navigation %ul.wat-cf %li .content.login .flash - flash.each do |type, message| %div{ :class => "message #{type}" } %p= message = form_for(resource, :as => resource_name, :url => session_path(resource_name), :html => { :class => "form login" }) do |f| .group.wat-cf .left= f.label :email, :class => "label right" .right= f.text_field :email, :class => "text_field" .group.wat-cf .left= f.label :password, :class => "label right" .right= f.password_field :password, :class => "text_field" .group.wat-cf .right %button.button{ :type => "submit" } Login /= link_to "Sign In", destroy_user_session_path #box = yield The signup pages haml file: %h2 .block .content.login .flash - flash.each do |type, message| %div{ :class => "message #{type}" } %p= message = form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| = devise_error_messages! %div = f.label :firstname %br/ = f.text_field :firstname %div = f.label :middlename %br/ = f.text_field :middlename %div = f.label :lastname %br/ = f.text_field :lastname %div = f.label :email %br/ = f.email_field :email %div = f.label :password %br/ = f.password_field :password %div = f.label :academic %br/ = f.text_field :academic %div= f.submit "Continue" = render :partial => "devise/shared/links" I used web-app-theme to create an activo theme and then modify it.

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  • What does "render @collection" do?

    - by ryeguy
    I'm trying to learn Rails better by looking at example applications, and while looking at this line of the source of railscasts.com, I noticed it does this: <div class="episodes"> <%= render @episodes %> </div> What exactly is going on here? Why isn't this documented on the render function? Or is it?

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  • How do I create and use a junction table in Rails?

    - by Thierry Lam
    I have the following data: A post called Hello has categories greet Another post called Hola has categories greet, international My schema is: create_table "posts", :force => true do |t| t.string "name" t.datetime "created_at" t.datetime "updated_at" end create_table "categories", :force => true do |t| t.string "name" t.datetime "created_at" t.datetime "updated_at" end create_table "posts_categories", :force => true do |t| t.integer "post_id" t.integer "category_id" t.datetime "created_at" t.datetime "updated_at" end After reading the Rails guide, the most suitable relationship for the above seems to be: class Post < ActiveRecord::Base has_and_belongs_to_many :categories end class Category < ActiveRecord::Base has_and_belongs_to_many :posts end My junction table also seems to have a primary key. I think I need to get rid of it. What's the initial migration command to generate a junction table in Rails? What's the best course of action, should I drop posts_categories and re-create it or just drop the primary key column? Does the junction table have a corresponding model? I have used scaffold to generate the junction table code, should I get rid of the extra code? Assuming all the above has been fixed and is working properly, how do I query all posts and display them along with their named categories in the view. For example: Post #1 - hello, categories: greet Post #2 - hola, categories: greet, international

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  • Partials in Liquid

    - by kostia
    Hello, We're trying to rewrite our current views from ERb to Liquid and we got following problem: we have a lot of render(:partial => '/path/to/partial') in our code, but we found absolutely no instructions how to render partials in Liquid. The only one solution we found was with help of render_to_string but it's just to ugly to be true. Thanx!

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  • Capistrano configuration

    - by Eli
    I'm having some issues with variable scope with the capistrano-ext gem's multistage module. I currently have, in config/deploy/staging.rb. set(:settings) { YAML.load_file("config/deploy.yml")['staging'] } set :repository, settings["repository"] set :deploy_to, settings["deploy_to"] set :branch, settings["branch"] set :domain, settings["domain"] set :user, settings["user"] role :app, domain role :web, domain role :db, domain, :primary => true My config/deploy/production.rb file is similar. This doesn't seem very DRY. Ideally, I think I'd like everything to be in the deploy.rb file. If there were a variable set with the current stage, everything would be really clean. UPDATE: I found a solution. I defined this function in deploy.rb: def set_settings(params) params.each_pair do |k,v| set k.to_sym, v end if exists? :domain role :app, domain role :web, domain role :db, domain, :primary => true end end Then my staging.rb file is just set_settings(YAML.load_file("config/deploy.yml")['staging'])

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  • rails server side to upload file from jquery-html5-upload?

    - by Mr_Nizzle
    I'm trying to use this plugin: jquery-html5-upload http://plugins.jquery.com/project/jquery-html5-upload and it's working but i don't know how to get the file and save it on the server on the rails action. in my rails log i just get this: ... 7?\021\b\000\034\000%\003\001\021\000\002\021\001\003\021\001\377?\e\000\000\001\005\001\001\000\000\000\000\000\000\000\000\000\000\000\003\001\002\004\005\006\000\a\377?2\020\000\001\002\002\b\005\002\004\a\000\000\000\000\000\000\000\001\002\003\004\021\000\005\022\023\024!\"1\006\#$2A\aQ\026ar?3BCR\201\243\261\377?\030\001\001\001\001\001\001\000\000\000\000\000\000\000\000\000\000\000\000\002\001\004\005\377?!\021\001\000\001\003\003\005\001\000\000\000\000\000\000\000\000\000\000\021\001\002\ ... i don't really know how to get the file and save it on the server. thx.

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  • ActiveScaffold custom action_link that should respond like update

    - by doug316
    I have a custom action link which is :inline and :post. It's a quick-link to update an attribute, and that part works just fine. After the action, my intent is to respond just like it was an update, so the row is re-rendered in the index. After the record is updated in my controller action, I call respond_to_action(:create) Just like in the create method in active scaffold. It seems like the content of the javascript response is returned correctly to the client, however, the problem: The content-type of the response header is "text/html" instead of "text/javascript", unlike with an actual update. So the JS is not executed and the row doesn't update. I can't figure out what the difference could possibly be here, I've traced extensively and even have replaced the respond_to_action with: respond_to do |format| format.js do render ... end end And it still won't set the content-type like every other action in the app. Anybody have a clue here? Something in active scaffold must be overriding the content-type and I can't figure out what it might be. Surprising this isn't documented, this doesn't seem like an unusual use-case, making an action a slave to the update re-render.

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  • How to rename model

    - by samuil
    I made a mistake early in development, and named one of my models with plural noun (Users instead of User). Is there an easy way to rename it and corresponding controller (similar to generating it with script/generate way)?

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  • Rails Dreamhost Cron Job

    - by Sam
    I'm trying to get some cron jobs going through Dreamost using their panel. I'm also using rake to execute these jobs My rake files are located in app/lib/tasks/example.rake But I don't know what code to give the panel to execute them

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  • SQL housekeeping tasks on Herkoku

    - by Chris Beeson
    Hi, I'm not sure how to do this... I have a database which contains a messages and categories tables. The categories table has a field which has a count of the number of messages related to it. Sometimes however I need to deactivate (active = 0) a message, at the moment this doesn't then update the category table... I will implement this is in the end but for the time I would just like to run a script perhaps daily that goes through all the categories, counts up the messages and updates the field. What the best way of doing this? Thanks in advance Chris

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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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  • Rails regex to extract Twitpic link/code if present

    - by Rabbott
    Provided a url, within a string of text (tweet) such as "Check out my twitpic http://twitpic.com/1876544594 its awesome" I need a Rails regex that will return 18744594, the id of this particular twitpic... This question has been asked here but was for PHP, and I need it for Rails. I would also be able to pull the name of the site, so the text between http:// and .com "twitpic"

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  • How do I make an image_tag opaque with Rails?

    - by codeman73
    I have tried the following: <%= image_tag '...path_to_img', :filter => "alpha(opacity=50)" %> But it doesn't work. At least it doesn't create errors, but it doesn't make it opaque, either. I'm rusty on my html/css, and I think from what I've researched so far that the filter/alpha/opacity I tried above is actually css instead of html.

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  • grammar in views

    - by jspooner
    I'm displaying a string like "I'm an Actor" or "I'm a skateboarder" and need to use a or an correctly. Is there a nifty rails view helper to see if a word starts with a vowel? <p>I'm an <%= @user.skills %></p> <p>I'm a <%= @user.skills %></p>

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  • Add a custom format in Rails (that will work with respond_to)

    - by Horace Loeb
    I have map.resources :posts and I want to be able to serve post bodies in markdown format. So I set up my respond_to block: respond_to do |format| format.markdown { render :text => @post.body.to_s } end But when I try to access /posts/1234.markdown, I get this error: NameError (uninitialized constant Mime::MARKDOWN): app/controllers/posts_controller.rb:96:in `show' app/controllers/posts_controller.rb:79:in `show' How do I add markdown as an acceptable format? Where can I see the list of acceptable formats?

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  • What's an elegant way to conditionally add a class to an HTML element in a view?

    - by ryeguy
    I occasionally have to add a class to an html element based on a condition. The problem is I can't figure out a clean way of doing it. Here's an example of the stuff I've tried: <div <%= if @status = 'success'; "class='ok'"; end %>> some message here </div> OR <% if @status == 'success' %> <div class='success'> <% else %> <div> <% end %> some message here </div> I don't like the first approach because it's crowded looking and hard to read. I don't like the second approach because the nesting is screwed up. It'd be nice to put it in the model, (something like @status.css_class), but that doesn't belong there. What do most people do?

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  • 406 Not Acceptable error when using Jquery $.post in Firefox but not in Safari or Chrome

    - by jlfenaux
    I'm using Jquery (1.3.2) $.post command to trigger an ajax call to a rails server. The code works great on Safari and on Google Chrome (mac), but when I tried it on Firefox (3.5.7), I got a weird '406 Not Acceptable' error. When I look at the headers, it Firefox indicated that it accepted only ' text/javascript' responses. And the response Content-Type was 'text/html; charset=utf-8'. In Chrome the accepted types were 'application/json, text/javascript, /, text/javascript' and the response Content-Type was 'application/json; charset=utf-8'. I tried to force the content type in rails to 'text/javascript' format.json do render :json => @races.to_json, :content_type => 'text/javascript' end The content type is indeed changed in Chrome, but not in Firefox where it remains 'text/html'. Here is the code I used to trigger the ajax call. $.post( "/locator", params, function(data){...}, "json" ); Is there something I can do to make this work in Firefox? Thanks

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  • secure rest API for running user "apps" in an iframe

    - by Brian Armstrong
    I want to let users create "apps" (like Facebook apps) for my website, and I'm trying to figure out the best way to make it secure. I have a REST api i want to run the user apps in an iframe on my own site (not a safe markup language like FBML) I was first looking at oAuth but this seems overkill for my solution. The "apps" don't need to be run on external sites or in desktop apps or anything. The user would stay on my site at all times but see the user submitted "app" through the iframe. So when I call the app the first time through the iframe, I can pass it some variables so it knows which logged in user is using it on my site. It can then use this user session in it's own API calls to customize the display. If the call is passed in the clear, I don't want someone to be able to intercept the session and impersonate the user. Does anyone know a good way to do this or good write up on it? Thanks!

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