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POSend data between controllers
 

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    <p>I have two models: <code>Activity</code> and <code>Comment</code>. <code>Comment</code> <code>belongs_to :activity</code> and <code>Activity</code> <code>has_many :comments</code>. For building activities, I've followed this <a href="http://railscasts.com/episodes/407-activity-feed-from-scratch" rel="nofollow">Railscast (Activity feed from scratch)</a></p> <p>So, I'm using <code>activity_presenter.rb</code></p> <pre><code>class ActivityPresenter &lt; SimpleDelegator attr_reader :activity def initialize(activity, view) super(view) @activity = activity end def render_activity div_for activity do link_to((gravatar_for activity.user, {size: 20}) + activity.user.name, activity.user) + ' ' + render_partial end end def render_partial locals = {activity: activity, presenter: self} locals[activity.trackable_type.underscore.to_sym] = activity.trackable render partial_path, locals end def partial_path partial_paths.detect do |path| lookup_context.template_exists? path, nil, true end || raise("No partial found for activity in #{partial_paths}") end def partial_paths [ "activities/#{activity.trackable_type.underscore}/#{activity.action}", "activities/#{activity.trackable_type.underscore}", "activities/activity" ] end end </code></pre> <p>which renders <code>_activities_feed.rb</code> partial with <code>@activities.each do |activity|</code> condition.</p> <p>In this partial I have 3 blocks:</p> <ul> <li><code>activity</code> with <code>form for activity</code> for updating purposes</li> <li><code>activity.comments</code> block with <code>each do |comment|</code></li> <li><code>activity.comments.new</code> (form)</li> </ul> <p>And this is a problem. I need to render <code>Activity.comments</code> and form for creating a new comment from <code>comments</code> controller, because I have 2 forms in one view and 2 <code>submit</code> buttons, which call 2 <code>update</code> or <code>create</code> actions. And, of course, I need it for making app logic better.</p> <p>But I can't send <code>activity</code> from <code>@activities.each do |activity|</code>, which I use everywhere in this partial to <code>comments_controller</code>.</p> <p>I've tried to add <code>@activity = Activity.find(params[:id])</code>, <code>@comment = Activity.comments.new(params[:activity_id])</code>, <code>@comments = Activity.comments.all</code> to <code>activities</code> and <code>comments</code> controllers, and also changed <code>activity</code> to <code>@activity</code> and <code>activity.comments.new</code> to <code>@comment</code>. But it doesn't help. I think, that I don't understand the basic logic of interaction between controllers, but can't find my mistakes.</p> <p>So, my <code>activities_controller</code>'s <code>index</code> action is:</p> <pre><code>@activities = Activity.order('updated_at DESC') </code></pre> <p>And in <code>comments_controller</code> I only have <code>create</code> and <code>destroy</code> actions, which work ok.</p> <p>Thanks for any help!</p> <p>UPD:</p> <p>This is my <code>_activities_feed.rb</code> structure:</p> <pre><code>&lt;% @activities.each do |activity| %&gt; &lt;%= form_for activity, remote: true do |a| %&gt; &lt;%= ActivityPresenter.new(activity, self).render_activity %&gt; . . . &lt;%= link_to ... class: 'add_comment', remote: true %&gt; # Shows activity.new.comment form &lt;%= link_to ... 'Edit' ... %&gt; # edit activity link &lt;%= a.submit 'Update' %&gt; # first submit button for submitting activity changes . . . &lt;% activity.comments.each do |comment| %&gt; # activity.comments block &lt;%= comment.text %&gt; &lt;%= link_to comment.user.name, comment.user %&gt; &lt;% end %&gt; . . . &lt;%= form_for activity.comments.new, remote: true do |f| %&gt; # form for adding comment &lt;%= f.text_area :text, 'rows' =&gt; '2', class: 'comment_text' %&gt; &lt;%= f.button 'Cancel', class: 'btn comment_cancel', type: 'button' %&gt; &lt;%= f.submit 'Post', class: 'btn btn-primary', controller: 'comments' %&gt; # second submit button &lt;%= f.hidden_field :activity_id, value: activity.id %&gt; &lt;% end %&gt; &lt;% end %&gt; &lt;% end %&gt; </code></pre>
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    1. USPeter Tretyakov
    1. USPeter Tretyakov
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    1. COInstead of dumping all details, I prefer the question to be a bit more abstract and concentrate. I feel hard to grasp what is the real problem with too much your detailed domain logics.
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      1. USBilly Chan
    2. COI'd prefer if you could show us the `form` that you are talking about.
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      1. USDavid
    3. COSorry, forget about the form. Added.
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      1. POSend data between controllers
      1. USPeter Tretyakov
 

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