Bring one group board to CE

2 files changed, 43 insertions, 1 deletions

diff --git a/db/migrate/20180227182112_add_group_id_to_boards.rb b/db/migrate/20180227182112_add_group_id_to_boards.rb
new file mode 100644
index 00000000000..d5da85bebcd
--- /dev/null
+++ b/db/migrate/20180227182112_add_group_id_to_boards.rb
@@ -0,0 +1,39 @@
+# This is part of a backport from EE group boards feature which a few extra steps
+# are required on this migration since it will be merged into EE which already
+# contains the group_id column.
+# like checking if the group_id column already exists before adding it.
+
+class AddGroupIdToBoards < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  DOWNTIME = false
+
+  def up
+    unless group_id_exists?
+      add_column :boards, :group_id, :integer
+      add_foreign_key :boards, :namespaces, column: :group_id, on_delete: :cascade
+      add_concurrent_index :boards, :group_id
+
+      change_column_null :boards, :project_id, true
+    end
+  end
+
+  def down
+    if group_id_exists?
+      remove_foreign_key :boards, column: :group_id
+      remove_index :boards, :group_id if index_exists? :boards, :group_id
+      remove_column :boards, :group_id
+
+      execute "DELETE from boards WHERE project_id IS NULL"
+      change_column_null :boards, :project_id, false
+    end
+  end
+
+  private
+
+  def group_id_exists?
+    column_exists?(:boards, :group_id)
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index db8bafe9677..1f68ad72308 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -184,11 +184,13 @@ ActiveRecord::Schema.define(version: 20180301084653) do
   add_index "award_emoji", ["user_id", "name"], name: "index_award_emoji_on_user_id_and_name", using: :btree
 
   create_table "boards", force: :cascade do |t|
-    t.integer "project_id", null: false
+    t.integer "project_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.integer "group_id"
   end
 
+  add_index "boards", ["group_id"], name: "index_boards_on_group_id", using: :btree
   add_index "boards", ["project_id"], name: "index_boards_on_project_id", using: :btree
 
   create_table "broadcast_messages", force: :cascade do |t|
@@ -1969,6 +1971,7 @@ ActiveRecord::Schema.define(version: 20180301084653) do
   add_index "web_hooks", ["project_id"], name: "index_web_hooks_on_project_id", using: :btree
   add_index "web_hooks", ["type"], name: "index_web_hooks_on_type", using: :btree
 
+  add_foreign_key "boards", "namespaces", column: "group_id", on_delete: :cascade
   add_foreign_key "boards", "projects", name: "fk_f15266b5f9", on_delete: :cascade
   add_foreign_key "chat_teams", "namespaces", on_delete: :cascade
   add_foreign_key "ci_build_trace_section_names", "projects", on_delete: :cascade