Question

Hi I’m trying to implement jquery token input according to railscasts #258 http://railscasts.com/episodes/258-token-fields

Where the railscasts uses ‘author’ I am using ‘artist’

When I start typing in the artist_token field my json search request is processed by the UsersController#show action instead of the ArtistsController#index action.

Since my _post_form partial is rendered on the PagesController#home view I would have thought the json might be processed by PagesController#home but for some reason it UsersController#show

Any ideas what I’m doing wrong?

## working example from railscasts #258

Started GET "/authors.json?q=d" for 127.0.0.1 at 2011-07-03 16:27:31 -0700
  Processing by AuthorsController#index as JSON
  Parameters: {"q"=>"d"}
  Author Load (0.7ms)  SELECT "authors".* FROM "authors" WHERE (name like '%d%')
Completed 200 OK in 17ms (Views: 2.3ms | ActiveRecord: 0.7ms)


## my log with UsersController#show instead of ArtistsController#index ???

Started GET "/artists.json?q=d" for 127.0.0.1 at 2011-07-03 16:12:44 -0700
  Processing by UsersController#show as JSON
  Parameters: {"q"=>"d", "id"=>"artists.json"}
  User Load (0.3ms)  SELECT "users".* FROM "users" WHERE "users"."cached_slug" = 'artists.json' LIMIT 1
  SQL (0.1ms)  SELECT sluggable_id FROM slugs WHERE ((slugs.sluggable_type = 'User' AND slugs.name = 'artists.json' AND slugs.sequence = 1))
  User Load (0.1ms)  SELECT "users".* FROM "users" WHERE "users"."id" = 0 LIMIT 1
Redirected to http://localhost:3000/
Completed 302 Found in 133ms

## pages controller

class PagesController < ApplicationController

  def home
    @title = "Home"
    @featured_posts = Post.featured.limit(10)
    if user_signed_in?
      @user = current_user
      @post = current_user.posts.build
      @feed_items = current_user.feed.paginate(:per_page => "10", :page => params[:page])
    else
     #render :layout => 'special_layout' 
    end
  end

## views/pages/home.html.erb 

<% if user_signed_in? %>

   <%= render 'shared/post_form'%>

   <%= render 'shared/user_info' %>
   <%= render 'shared/stats' %>

## views/shared/_post form.html.erb

<%= form_for @post, :validate => true, :html => {:multipart => true} do |f| %>
  <%= render 'shared/error_messages', :object => f.object %>
    <div class="field">
    <%= f.label :title, 'Title:' %><br /> 
        <%= f.text_field :title %><br />

     <%= f.label :artist_tokens, "Artists" %><br />
     <%= f.text_field :artist_tokens, "data-pre" => @post.artists.map(&:attributes).to_json %>
    <div>
    <div class="actions">
      <%= f.submit "Submit" %>
    </div>
<% end %>


## artists controller

class ArtistsController < ApplicationController
  def index
    @artists = Artist.where("name like ?", "%#{params[:q]}%")
    respond_to do |format|
      format.html
      format.json { render :json => @artists.map(&:attributes) }
    end
  end

  def show
    @artist = Artist.find(params[:id])
  end

  def new
    @artist = Artist.new
  end

  def create
    @artist = Artist.new(params[:author])
    if @artist.save
      redirect_to @artist, :notice => "Successfully created artist."
    else
      render :action => 'new'
    end
  end

  def edit
    @artist = Artist.find(params[:id])
  end

  def update
    @artist = Artist.find(params[:id])
    if @artist.update_attributes(params[:artist])
      redirect_to @artist, :notice  => "Successfully updated artist."
    else
      render :action => 'edit'
    end
  end

  def destroy
    @artist = Artist.find(params[:id])
    @artist.destroy
    redirect_to authors_url, :notice => "Successfully destroyed artist."
  end
end


## artist model

class Artist < ActiveRecord::Base
attr_accessible :name
has_many :artistizations
has_many :posts, :through => :artistizations

end

## artistization model

class Artistization < ActiveRecord::Base
attr_accessible :post_id, :artist_id
belongs_to :artist
belongs_to :post

end

## post model

  attr_accessible :title, :artist_tokens

  has_many :artistizations
  has_many :artists, :through => :artistizations 
  attr_reader :artist_tokens

  def artist_tokens=(ids)
    self.artist_ids = ids.split(",")
  end


## application.js

$(function() {
  $("#post_artist_tokens").tokenInput("/artists.json", {
    crossDomain: false,
    prePopulate: $("#post_artist_tokens").data("pre"),
    theme: "facebook"

  });
});

 ## routes 


  match 'auth/:provider/callback' => 'authentications#create'
  resources :authentications

  devise_for :admins
  match '/admin' => 'RailsAdmin/Main#index'

  devise_for :users, :controllers => {:registrations => 'registrations'}

  resources :posts do
      member do
      get :likers
      end
      collection do
        get :search
      end
  end  

  resources :relationships, :only => [:create, :destroy]
  resources :appreciations, :only => [:create, :destroy]


  match '/contact', :to => 'pages#contact'
  match '/about',   :to => 'pages#about'
  match '/help',    :to => 'pages#help'
  match '/blog',    :to => 'pages#blog'


  resources :users do
     member do
     get :following, :followers, :likes
     end
     resources :collections
 end

  # This is a legacy wild controller route that's not recommended for RESTful applications.
  # Note: This route will make all actions in every controller accessible via GET requests.
  # match ':controller(/:action(/:id(.:format)))'
    match '/:id' => 'users#show', :constraints => {:id => /[^\/]+/}, :as => :global_user
    root :to => "pages#home"
end

Answer 1

Usually when you have problems like these, where something is being processed by a ‘wrong’ controller, you should first check your routes.rb file.

Right away I noticed this:

# This is a legacy wild controller route that's not recommended for RESTful applications.
# Note: This route will make all actions in every controller accessible via GET requests.
# match ':controller(/:action(/:id(.:format)))'
match '/:id' => 'users#show', :constraints => {:id => /[^\/]+/}, :as => :global_user

Basically it seems like every request in that format is being routed to the users#show action. Try commenting out that match directive and see if it works now. If other things break then it’s up to you to see why you need that there and how you can accommodate accordingly.