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PODelete nested object
 

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    <p>Hi im struggling with adding a link to delete an object thats nested. I have list application that has many tasks nested like this.</p> <pre><code>resources :lists do resource :tasks end </code></pre> <p>I have read this <a href="https://stackoverflow.com/questions/5710642/deleting-nested-objects-rails">post</a> but it does not work for me. I want a link to delete in this code below</p> <pre><code> &lt;h4&gt;Tasks&lt;/h4&gt; &lt;% @list.tasks.each do |task| %&gt; &lt;%= task.desc %&gt; &lt;%= link_to "Delete", list_task_path(list, task), :method =&gt; :delete %&gt;&lt;br /&gt; &lt;% end %&gt; </code></pre> <p>But it gives me the following error</p> <pre><code>undefined local variable or method `list' for #&lt;#&lt;Class:0x007f9adc555db0&gt;:0x007f9adc547828&gt; </code></pre> <p>EDIT: Now i get the following error when i refreshed the page</p> <pre><code>No route matches {:action=&gt;"show", :controller=&gt;"tasks", :list_id=&gt;#&lt;List id: 28, name: "Julklappar", user_id: 1, created_at: "2012-12-22 17:40:05", updated_at: "2012-12-22 17:40:05"&gt;, :id=&gt;#&lt;Task id: nil, desc: nil, completed: false, list_id: 28, created_at: nil, updated_at: nil&gt;} </code></pre> <p>Rake routes: </p> <pre><code>pierre@ubuntu:~/todolist$ rake routes list_tasks GET /lists/:list_id/tasks(.:format) tasks#index POST /lists/:list_id/tasks(.:format) tasks#create new_list_task GET /lists/:list_id/tasks/new(.:format) tasks#new edit_list_task GET /lists/:list_id/tasks/:id/edit(.:format) tasks#edit list_task GET /lists/:list_id/tasks/:id(.:format) tasks#show PUT /lists/:list_id/tasks/:id(.:format) tasks#update DELETE /lists/:list_id/tasks/:id(.:format) tasks#destroy lists GET /lists(.:format) lists#index POST /lists(.:format) lists#create new_list GET /lists/new(.:format) lists#new edit_list GET /lists/:id/edit(.:format) lists#edit list GET /lists/:id(.:format) lists#show PUT /lists/:id(.:format) lists#update DELETE /lists/:id(.:format) lists#destroy new_user_session GET /users/sign_in(.:format) devise/sessions#new user_session POST /users/sign_in(.:format) devise/sessions#create destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy user_password POST /users/password(.:format) devise/passwords#create new_user_password GET /users/password/new(.:format) devise/passwords#new edit_user_password GET /users/password/edit(.:format) devise/passwords#edit PUT /users/password(.:format) devise/passwords#update cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel user_registration POST /users(.:format) devise/registrations#create new_user_registration GET /users/register(.:format) devise/registrations#new edit_user_registration GET /users/edit(.:format) devise/registrations#edit PUT /users(.:format) devise/registrations#update DELETE /users(.:format) devise/registrations#destroy root / lists#index </code></pre> <p>Edit #2 This is my lists/show.html.erb file</p> <pre><code>&lt;p id="notice"&gt;&lt;%= notice %&gt;&lt;/p&gt; &lt;h2&gt;&lt;%= @list.name %&gt;&lt;/h2&gt; &lt;h4&gt;Tasks&lt;/h4&gt; &lt;% @list.tasks.each do |task| %&gt; &lt;%= task.desc %&gt; &lt;%= link_to "Delete", list_task_path(@list, task), :method =&gt; :delete %&gt; &lt;% end %&gt; &lt;%= form_for [@list, @task] do |form| %&gt; &lt;p&gt;&lt;%= form.text_field :desc %&gt; &lt;%= form.submit %&gt;&lt;/p&gt; &lt;% end %&gt; &lt;%= link_to 'Edit', edit_list_path(@list) %&gt; | &lt;%= link_to 'Back', lists_path %&gt; </code></pre> <p>lists controller</p> <pre><code> def show @list = current_user.lists.find(params[:id]) @task = @list.tasks.new end </code></pre>
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