Added due date calendar to new issue form

Closes #15516

app/assets/javascripts/issuable_form.js.coffee

@@ -20,6 +20,15 @@ class @IssuableForm
 
     @initWip()
 
+    $issuableDueDate = $('#issuable-due-date')
+
+    if $issuableDueDate.length
+      $('.datepicker').datepicker(
+        dateFormat: 'yy-mm-dd',
+        onSelect: (dateText, inst) ->
+          $issuableDueDate.val dateText
+      ).datepicker 'setDate', $.datepicker.parseDate('yy-mm-dd', $issuableDueDate.val())
+
   initAutosave: ->
     new Autosave @titleField, [
       document.location.pathname,

app/assets/stylesheets/framework/forms.scss

@@ -28,10 +28,6 @@ input[type='text'].danger {
 }
 
 label {
-  &.control-label {
-    @extend .col-sm-2;
-  }
-
   &.inline-label {
     margin: 0;
   }
@@ -41,6 +37,10 @@ label {
   }
 }
 
+.control-label {
+  @extend .col-sm-2;
+}
+
 .inline-input-group {
   width: 250px;
 }

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

@@ -44,22 +44,23 @@
           This issue is confidential and should only be visible to team members
 
 - if can?(current_user, :"admin_#{issuable.to_ability_name}", issuable.project)
+  - has_due_date = issuable.has_attribute?(:due_date)
   %hr
-  .form-group
-    .issue-assignee
-      = f.label :assignee_id, "Assignee", class: 'control-label'
-      .col-sm-10
+  .row
+    %div{ class: (has_due_date ? "col-lg-6" : "col-sm-12") }
+      .form-group.issue-assignee
+        = f.label :assignee_id, "Assignee", class: "control-label #{"col-lg-4" if has_due_date}"
+        .col-sm-10{ class: ("col-lg-8" if has_due_date) }
           .issuable-form-select-holder
             = users_select_tag("#{issuable.class.model_name.param_key}[assignee_id]",
                 placeholder: 'Select assignee', class: 'custom-form-control', null_user: true,
                 selected: issuable.assignee_id, project: @target_project || @project,
                 first_user: true, current_user: true, include_blank: true)
-         
-        = link_to 'Assign to me', '#', class: 'btn assign-to-me-link'
-  .form-group
-    .issue-milestone
-      = f.label :milestone_id, "Milestone", class: 'control-label'
-      .col-sm-10
+          %br
+          = link_to 'Assign to me', '#', class: 'assign-to-me-link prepend-top-5 inline'
+      .form-group.issue-milestone
+        = f.label :milestone_id, "Milestone", class: "control-label #{"col-lg-4" if has_due_date}"
+        .col-sm-10{ class: ("col-lg-8" if has_due_date) }
           - if milestone_options(issuable).present?
             .issuable-form-select-holder
               = f.select(:milestone_id, milestone_options(issuable),
@@ -67,22 +68,29 @@
           - else
             .prepend-top-10
             %span.light No open milestones available.
-         
           - if can? current_user, :admin_milestone, issuable.project
-          = link_to 'Create new milestone', new_namespace_project_milestone_path(issuable.project.namespace, issuable.project), target: :blank
+            %br
+            = link_to 'Create new milestone', new_namespace_project_milestone_path(issuable.project.namespace, issuable.project), target: :blank, class: "prepend-top-5 inline"
       .form-group
         - has_labels = issuable.project.labels.any?
-    = f.label :label_ids, "Labels", class: 'control-label'
-    .col-sm-10{ class: ('issuable-form-padding-top' if !has_labels) }
+        = f.label :label_ids, "Labels", class: "control-label #{"col-lg-4" if has_due_date}"
+        .col-sm-10{ class: "#{"col-lg-8" if has_due_date} #{'issuable-form-padding-top' if !has_labels}" }
           - if has_labels
             .issuable-form-select-holder
               = f.collection_select :label_ids, issuable.project.labels.all, :id, :name,
                 { selected: issuable.label_ids }, multiple: true, class: 'select2', data: { placeholder: "Select labels" }
           - else
             %span.light No labels yet.
-       
           - if can? current_user, :admin_label, issuable.project
-        = link_to 'Create new label', new_namespace_project_label_path(issuable.project.namespace, issuable.project), target: :blank
+            %br
+            = link_to 'Create new label', new_namespace_project_label_path(issuable.project.namespace, issuable.project), target: :blank, class: "prepend-top-5 inline"
+    - if issuable.has_attribute?(:due_date)
+      .col-lg-6
+        .form-group
+          = f.label :due_date, "Due date", class: "control-label"
+          = f.hidden_field :due_date, id: "issuable-due-date"
+          .col-sm-10
+            .datepicker
 
 - if issuable.can_move?(current_user)
   %hr