Pass in just assignees instead of issuable

app/views/projects/issues/show.html.haml

@@ -88,4 +88,6 @@
   %section.issuable-discussion
     = render 'projects/issues/discussion'
 
-= render 'shared/issuable/sidebar', issuable: @issue, issuable_sidebar: @issuable_sidebar
+-# `assignees` is required for populating selected assignee values in the select box
+  This is should be removed when sidebar is converted to Vue.
+= render 'shared/issuable/sidebar', issuable_sidebar: @issuable_sidebar, assignees: @issue.assignees

app/views/projects/merge_requests/conflicts/show.html.haml

@@ -6,6 +6,10 @@
 .merge-request-details.issuable-details
   = render "projects/merge_requests/mr_box"
 
+-# `assignees` is required for populating selected assignee values in the select box and rendering the assignee link
+  This is should be removed when sidebar is converted to Vue.
+= render 'shared/issuable/sidebar', issuable_sidebar: @issuable_sidebar, assignees: @merge_request.assignees
+
 = render 'shared/issuable/sidebar', issuable: @merge_request, issuable_sidebar: @issuable_sidebar
 
 #conflicts{ "v-cloak" => "true", data: { conflicts_path: conflicts_project_merge_request_path(@merge_request.project, @merge_request, format: :json),

app/views/projects/merge_requests/show.html.haml

@@ -86,7 +86,9 @@
     .mr-loading-status
       = spinner
 
-= render 'shared/issuable/sidebar', issuable: @merge_request, issuable_sidebar: @issuable_sidebar
+-# `assignees` is required for populating selected assignee values in the select box and rendering the assignee link
+  This is should be removed when sidebar is converted to Vue.
+= render 'shared/issuable/sidebar', issuable_sidebar: @issuable_sidebar, assignees: @merge_request.assignees
 
 - if @merge_request.can_be_reverted?(current_user)
   = render "projects/commit/change", type: 'revert', commit: @merge_request.merge_commit, title: @merge_request.title

app/views/shared/issuable/_sidebar.html.haml

@@ -18,7 +18,7 @@
         .block.todo.hide-expanded
           = render "shared/issuable/sidebar_todo", issuable_sidebar: issuable_sidebar, is_collapsed: true
       .block.assignee.qa-assignee-block
-        = render "shared/issuable/sidebar_assignees", issuable: issuable, issuable_sidebar: issuable_sidebar
+        = render "shared/issuable/sidebar_assignees", issuable_sidebar: issuable_sidebar, assignees: assignees
 
       = render_if_exists 'shared/issuable/sidebar_item_epic', issuable_sidebar: issuable_sidebar
 

app/views/shared/issuable/_sidebar_assignees.html.haml

@@ -8,9 +8,10 @@
       = _('Assignee')
       = icon('spinner spin')
 - else
+  - assignee = assignees.first
   .sidebar-collapsed-icon.sidebar-collapsed-user{ data: { toggle: "tooltip", placement: "left", container: "body", boundary: 'viewport' }, title: (issuable_sidebar.dig(:assignee, :name) || _('Assignee')) }
     - if issuable_sidebar[:assignee]
-      = link_to_member(@project, issuable.assignee, size: 24)
+      = link_to_member(@project, assignee, size: 24)
     - else
       = icon('user', 'aria-hidden': 'true')
   .title.hide-collapsed
@@ -23,7 +24,7 @@
         = sidebar_gutter_toggle_icon
   .value.hide-collapsed
     - if issuable_sidebar[:assignee]
-      = link_to_member(@project, issuable.assignee, size: 32, extra_class: 'bold') do
+      = link_to_member(@project, assignee, size: 32, extra_class: 'bold') do
         - if issuable_sidebar[:can_merge]
           %span.float-right.cannot-be-merged{ data: { toggle: 'tooltip', placement: 'left' }, title: _('Not allowed to merge') }
             = icon('exclamation-triangle', 'aria-hidden': 'true')
@@ -38,10 +39,10 @@
             = _('assign yourself')
 
 .selectbox.hide-collapsed
-  - if issuable.assignees.none?
+  - if assignees.none?
     = hidden_field_tag "#{issuable_type}[assignee_ids][]", 0, id: nil
   - else
-    - issuable.assignees.each do |assignee|
+    - assignees.each do |assignee|
       = hidden_field_tag "#{issuable_type}[assignee_ids][]", assignee.id, id: nil, data: { avatar_url: assignee.avatar_url, name: assignee.name, username: assignee.username }
 
   - options = { toggle_class: 'js-user-search js-author-search',