hide help block when user is creating a new project inside a group

CHANGELOG

@@ -26,6 +26,7 @@ v 8.7.0 (unreleased)
   - API: Fix milestone filtering by `iid` (Robert Schilling)
   - Implement 'Groups View' as an option for dashboard preferences !3379 (Elias W.)
   - Better errors handling when creating milestones inside groups
+  - Hide `Create a group` help block when creating a new project in a group
   - Implement 'TODOs View' as an option for dashboard preferences !3379 (Elias W.)
   - Gracefully handle notes on deleted commits in merge requests (Stan Hu)
   - Fix creation of merge requests for orphaned branches (Stan Hu)

app/assets/javascripts/behaviors/requires_input.js.coffee

@@ -35,4 +35,18 @@ $.fn.requiresInput = ->
   $form.on 'change input', fieldSelector, requireInput
 
 $ ->
-  $('form.js-requires-input').requiresInput()
+  $form = $('form.js-requires-input')
+  $form.requiresInput()
+
+  # Hide or Show the help block when creating a new project
+  # based on the option selected
+  hideOrShowHelpBlock = (form) ->
+    selected = $('.js-select-namespace option:selected')
+    if selected.length and selected.data('options-parent') is 'groups'
+      return form.find('.help-block').hide()
+    else if selected.length
+      form.find('.help-block').show()
+
+  hideOrShowHelpBlock($form)
+
+  $('.select2.js-select-namespace').change -> hideOrShowHelpBlock($form)

app/helpers/namespaces_helper.rb

@@ -3,8 +3,16 @@ module NamespacesHelper
     groups = current_user.owned_groups + current_user.masters_groups
     users = [current_user.namespace]
 
-    group_opts = ["Groups", groups.sort_by(&:human_name).map {|g| [display_path ? g.path : g.human_name, g.id]} ]
-    users_opts = [ "Users", users.sort_by(&:human_name).map {|u| [display_path ? u.path : u.human_name, u.id]} ]
+    data_attr_group = { 'data-options-parent' => 'groups' }
+    data_attr_users = { 'data-options-parent' => 'users' }
+
+    group_opts = [
+      "Groups", groups.sort_by(&:human_name).map { |g| [display_path ? g.path : g.human_name, g.id, data_attr_group] }
+    ]
+
+    users_opts = [
+      "Users", users.sort_by(&:human_name).map { |u| [display_path ? u.path : u.human_name, u.id, data_attr_users] }
+    ]
 
     options = []
     options << group_opts

app/views/projects/new.html.haml

@@ -19,7 +19,7 @@
             - if current_user.can_select_namespace?
               .input-group-addon
                 = root_url
-              = f.select :namespace_id, namespaces_options(params[:namespace_id] || :current_user, display_path: true), {}, {class: 'select2', tabindex: 1}
+              = f.select :namespace_id, namespaces_options(params[:namespace_id] || :current_user, display_path: true), {}, {class: 'select2 js-select-namespace', tabindex: 1}
               .input-group-addon
                 \/
             - else