undefined method?

rubyonrails-talk
1

I'm trying to learn rails as I go along, and having a bit of trouble. There is an undefined method cropping that I don't know why rails thinks should be there.

Firstly, I'm using rails 3, ruby 1.9.2

I have a controller with an index action This part works fine, but i am trying to add a comment form to the page that is rendered by that index action.

Supposing my controller is named controller1,

I began this process first with:

rails g model comments name:string content:text rake rb:migrate

Then I went on to define an action to create the comments:

within contoller1_controller.rb I added

2

You were using a singular resource when you should have defined a plural one. Also, you can specify the controller on your RESTful route instead of having to create a separate map.connect or match:

resources :comments, :controller => 'controller1'

I recommend that you use consistent naming with your controllers and routes though.

HTH

3

I'm still getting the "undefined method `comments_index_path'" error

The extracted source points at:   <%= form_for(@comment) do |format| %>

I cannot find where that method would be being called from even..."comments_index_path" only appears in the development.log

4

Hmmm wait, I just noticed something. Could you rename your Comments model to Comment (from plural to singular). Don't forget to rename the model file (comments.rb to comment.rb)

5

Thanks, that gets the comment form loading.

I added:

  def create     @comment = Comment.new(params[:comments])

    respond_to do |format|       if @comment.save         format.html { redirect_to('/', :notice => 'comment posted') }         format.xml { render :xml => @comment, :status => :created, :location => @comment }       else         format.html { render :action => "new" }         format.xml { render :xml => @comment.errors, :status => :unprocessable_entity }       end     end   end

to my controller1_controller.rb file, and now when I click the submit button, I get the following error "uninitialized constant CommentsController"

Despite the redirect_to('/', ...) the page is redirecting to /comments

6

Can you post your route setup again?

7

Internet::Application.routes.draw do |map|   get "internets/index"   get "section4/index"   get "section3/index"   get "section2/index"   get "section1/index"   get "science/index"   resources :users   resources :comments   map.connect '/blog/new', :controller => 'section3', :action => 'new'   get 'login(.:format)' => 'user_session#new', :as => :login   post 'login(.:format)' => 'user_session#create', :as => :login   delete 'logout(.:format)' => 'user_session#destroy', :as => :logout   get "home/index"   root :to => "home#index"   map.logout 'logout', :controller => 'user_session', :action => 'destroy'   map.logout 'logout', :controller => 'user_session', :action => 'destroy'   map.edit 'edit', :controller => 'users', :action => 'edit'   map.internets 'internets', :controller => 'internets', :action => 'index'   map.section4 'random', :controller => 'section4', :action => 'index'   map.section3 'blog', :controller => 'section3', :action => 'index'   map.section2 'artistry', :controller => 'section2', :action => 'index'   map.section1 'home', :controller => 'section1', :action => 'index' end

Thats the entirety of it. The area that is giving me trouble is in the 'section3' controller

I can post comments from the console, and they do then show up in the index.

and when I use "form_for :comments" the log shows the data being posted, but there's no INSERT INTO being executed

It seems like the form is not reading from the controller

thanks for the help

8

I got it to work by creating a comments_controller.rb file and using the same action definitions as the section3_controller

I'm not sure why i had to make a new controller though.

But, thanks for the help