Rails 3- Render partial on an ajax call within a popup

Question

I have a button with remote=>true that calls a popup (a jquery popup, not a real one) in the following way:

$modal = $('#modal')
$modal_close = $modal.find('.close')
$modal_container = $('#modal-container')
$task_select_div = $('.activity_task_add')

# Handle modal links with the data-remote attribute
$('a[data-remote]').on 'ajax:success',  (xhr, data, status) ->
  $modal
    .html(data)
    .prepend($modal_close)
    .css('top', $(window).scrollTop() + 150)
    .show()

#This is the callback that is not being executed.
$('form[data-remote]').on 'ajax:success',  (xhr, data, status) ->
  alert(data)
  $modal_container.hide()
  $modal.hide()
  $task_select_div.html(data)

In that popup I have another form with remote_tag in the submit button of this form I call and action that has the following code at the bottom:

respond_to do |format|
    if @task.save
       format.html { redirect_to @task, notice: 'Task was successfully created.' }
       format.json { render json: @task, status: :created, location: @task }
       format.js {render :partial => 'tasks', :locals => {:tasks => current_user.department.tasks}}
    else
     format.html { render action: "new" }
     format.json { render json: @task.errors, status: :unprocessable_entity }
    end
end

It executes format.js and the console says "Rendered tasks/_tasks.html.erb (5.8ms)" but the callback for the ajax call is not working.

$('form[data-remote]').on 'ajax:success',  (xhr, data, status) ->
  alert(data)

I need to receive an ajax:success event in order to hide the Popup. Any help?

Answer 1

Remove this line :

format.js {render :partial => 'tasks', :locals => {:tasks => current_user.department.tasks}}

Update your js callback :

$('form[data-remote]').on 'ajax:success',  (xhr, data, status) ->
  alert("hello world")
  $modal_container.hide()
  $modal.hide()
  $task_select_div.html(<%= escape_javascript(render :partial => 'tasks', :locals => {:tasks => current_user.department.tasks} ) %>)

Answer 2

Solved it.

Changed my respond_to do |format| for this:

if request.xhr?
  task_list = render_to_string :partial => 'tasks', :locals => {:tasks => current_user.department.tasks}
  task_list =  task_list.html_safe.gsub(/\n/, '').gsub(/\t/, '').gsub(/\r/, '')
  render :json => {:html => task_list, :error => ''}
else
  respond_to do |format|
    if @task.save
          format.html { redirect_to @task, notice: 'Task was successfully created.' }
          format.json { render json: @task, status: :created, location: @task }  
    else
      format.html { render action: "new" }
      format.json { render json: @task.errors, status: :unprocessable_entity }
    end
  end
end

And my javascript for this:

$('form[data-remote]').on 'ajax:success',  (xhr, data, status) ->
  $modal_container.hide()
  $modal.hide()
  $task_select_div.html(data.html)

What do you think of this solution? Any drawbacks?