title: path not recognized by Rails
body: <p>My app is calling a resource trougth a path helper <code>show_popular_hashtags_path</code>, but Rails seems to not recognize it. This is my partial:</p>
  
  <pre><code>.col-xs-12.no-padding.blue-title{style: "page-break-inside: avoid !important;"}
    .col-xs-12.text-center.global-map.no-padding
      %h1 
        = t('uniq.hashtag.title')
      .js-column-chart-hashtags{data: {url: show_popular_hashtags_path(id: @project.id, provider: provider), provider: provider}}
        .column-chart-hashtags.statistics-chart{class: "#{provider}", style: "width: 100%"}
      %h2.empty-message.column-chart-hashtags{class: "#{provider}", style: "padding-top: 15px; padding-bottom: 30px; display: none;"}
        = t('unique.there_is_no_info') 
  </code></pre>
  
  <p>this is my <code>routes.rb</code>:</p>
  
  <pre><code>namespace :user do
    resources :projects, except: [:delete] do
      member do
        get :show_users, to: 'projects#js_show_users_data', as: :show_users_data
        get :show_popular_hashtags, to: 'projects#js_show_popular_hashtags', as: :show_popular_hashtags
        get :show_activity_data, to: 'projects#js_show_activity_data', as: :show_activity_data
  </code></pre>
  
  <p>For the another routes everything goes very well, even when I run <code>rake routes | grep show_popular_hashtags</code>, the output is:</p>
  
  <pre><code>$ rake routes | grep show_popular_hashtags
      show_popular_hashtags_user_project GET      /user/projects/:id/show_popular_hashtags(.:format)       user/projects#js_show_popular_hashtags
  </code></pre>
  
  <p>So, this looks like the route is well, but when I visit the view which contains the partial this error appears:</p>
  
  <pre><code>undefined method `show_popular_hashtags_path' for #&lt;#&lt;Class:0x007fa20d865d10&gt;:0x007fa20dc5a6f0&gt;
  </code></pre>
  
  <p>I already restarted the server, but it did not work.</p>