= form_for [@project.namespace.becomes(Namespace), @project, @merge_request], remote: true, html: {class: 'edit-merge_request inline-update'} do |f|
  %div.prepend-top-20
    .issuable-context-title
      %label
        Assignee:
      - if @merge_request.assignee
        %strong= link_to_member(@project, @merge_request.assignee, size: 24)
      - else
        none
    .issuable-context-selectbox
      - if can?(current_user, :modify_merge_request, @merge_request)
        = users_select_tag('merge_request[assignee_id]', placeholder: 'Select assignee', class: 'custom-form-control js-select2 js-assignee', selected: @merge_request.assignee_id, null_user: true)

  %div.prepend-top-20.clearfix
    .issuable-context-title
      %label
        Milestone:
      - if @merge_request.milestone
        %span.back-to-milestone
          = link_to namespace_project_milestone_path(@project.namespace, @project, @merge_request.milestone) do
            %strong
              %i.fa.fa-clock-o
              = @merge_request.milestone.title
      - else
        none
    .issuable-context-selectbox
      - if can?(current_user, :modify_merge_request, @merge_request)
        = f.select(:milestone_id, milestone_options(@merge_request), { include_blank: "Select milestone" }, {class: 'select2 select2-compact js-select2 js-milestone'})
        = hidden_field_tag :merge_request_context
        = f.submit class: 'btn'

  - if current_user
    %div.prepend-top-20.clearfix
      .issuable-context-title
        %label
          Subscription:
      %button.btn.btn-block.subscribe-button
        %i.fa.fa-eye
        %span= @merge_request.subscribed?(current_user) ? "Unsubscribe" : "Subscribe"
      - subscribtion_status = @merge_request.subscribed?(current_user) ? "subscribed" : "unsubscribed"
      .subscription-status{"data-status" => subscribtion_status}
        .description-block.unsubscribed{class: ( "hidden" if @merge_request.subscribed?(current_user) )}
          You're not receiving notifications from this thread.
        .description-block.subscribed{class: ( "hidden" unless @merge_request.subscribed?(current_user) )}
          You're receiving notifications because you're subscribed to this thread.

:coffeescript
  new Subscription("#{toggle_subscription_namespace_project_merge_request_path(@merge_request.project.namespace, @project, @merge_request)}")