Minor edits, incorporate review

app/views/groups/_create_chat_team.html.haml

@@ -10,7 +10,7 @@
         Create a Mattermost team for this group
       %br
       %small.light.js-toggle-content
-        Team URL:
+        Mattermost URL:
         = Settings.mattermost.host
         %span> /
         %span{ "data-bind-out" => "create_chat_team" }

db/migrate/20170120131253_create_chat_teams.rb

@@ -8,13 +8,11 @@ class CreateChatTeams < ActiveRecord::Migration
 
   def change
     create_table :chat_teams do |t|
-      t.integer :namespace_id, index: true
+      t.references :namespace, null: false, index: { unique: true }, foreign_key: { on_delete: :cascade }
       t.string :team_id
       t.string :name
 
       t.timestamps null: false
     end
-
-    add_concurrent_foreign_key :chat_teams, :namespaces, column: :namespace_id
   end
 end

db/schema.rb

@@ -173,14 +173,14 @@ ActiveRecord::Schema.define(version: 20170217151947) do
   add_index "chat_names", ["user_id", "service_id"], name: "index_chat_names_on_user_id_and_service_id", unique: true, using: :btree
 
   create_table "chat_teams", force: :cascade do |t|
-    t.integer "namespace_id"
+    t.integer "namespace_id", null: false
     t.string "team_id"
     t.string "name"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
   end
 
-  add_index "chat_teams", ["namespace_id"], name: "index_chat_teams_on_namespace_id", using: :btree
+  add_index "chat_teams", ["namespace_id"], name: "index_chat_teams_on_namespace_id", unique: true, using: :btree
 
   create_table "ci_application_settings", force: :cascade do |t|
     t.boolean "all_broken_builds"
@@ -1343,7 +1343,7 @@ ActiveRecord::Schema.define(version: 20170217151947) do
   add_index "web_hooks", ["project_id"], name: "index_web_hooks_on_project_id", using: :btree
 
   add_foreign_key "boards", "projects"
-  add_foreign_key "chat_teams", "namespaces", name: "fk_3b543909cb", on_delete: :cascade
+  add_foreign_key "chat_teams", "namespaces", on_delete: :cascade
   add_foreign_key "issue_metrics", "issues", on_delete: :cascade
   add_foreign_key "label_priorities", "labels", on_delete: :cascade
   add_foreign_key "label_priorities", "projects", on_delete: :cascade

spec/features/groups_spec.rb

@@ -46,7 +46,10 @@ feature 'Group', feature: true do
 
     describe 'Mattermost team creation' do
       before do
-        Settings.mattermost['enabled'] = mattermost_enabled
+        mash = Hashie::Mash.new
+        mash.enabled = mattermost_enabled
+        allow(Settings).to receive(:mattermost).and_return(mash)
+
         visit new_group_path
       end