Add Board model

app/models/board.rb

+class Board < ActiveRecord::Base
+  belongs_to :project
+
+  has_many :lists, dependent: :destroy
+
+  validates :project, presence: true
+end

app/models/list.rb

+class List < ActiveRecord::Base
+  belongs_to :board
+  belongs_to :label
+
+  enum list_type: { label: 0, backlog: 1, done: 2 }
+
+  validates :board, :list_type, :position, presence: true
+  validates :label, presence: true, if: :label?
+  validates :position, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
+end

app/models/project.rb

@@ -62,6 +62,8 @@ class Project < ActiveRecord::Base
   belongs_to :group, -> { where(type: Group) }, foreign_key: 'namespace_id'
   belongs_to :namespace
 
+  has_one :board, dependent: :destroy
+
   has_one :last_event, -> {order 'events.created_at DESC'}, class_name: 'Event', foreign_key: 'project_id'
 
   # Project services

db/migrate/20160727191041_create_boards.rb

+class CreateBoards < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def change
+    create_table :boards do |t|
+      t.references :project, index: true, foreign_key: true, null: false
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20160727193336_create_lists.rb

+class CreateLists < ActiveRecord::Migration
+  def change
+    create_table :lists do |t|
+      t.references :board, index: true, foreign_key: true, null: false
+      t.references :label, index: true, foreign_key: true
+      t.integer :list_type, null: false, default: 0
+      t.integer :position, null: false
+
+      t.timestamps null: false
+    end
+  end
+end

db/schema.rb

@@ -117,6 +117,14 @@ ActiveRecord::Schema.define(version: 20160810142633) do
   add_index "award_emoji", ["user_id", "name"], name: "index_award_emoji_on_user_id_and_name", using: :btree
   add_index "award_emoji", ["user_id"], name: "index_award_emoji_on_user_id", using: :btree
 
+  create_table "boards", force: :cascade do |t|
+    t.integer  "project_id", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  add_index "boards", ["project_id"], name: "index_boards_on_project_id", using: :btree
+
   create_table "broadcast_messages", force: :cascade do |t|
     t.text     "message",    null: false
     t.datetime "starts_at"
@@ -533,6 +541,18 @@ ActiveRecord::Schema.define(version: 20160810142633) do
 
   add_index "lfs_objects_projects", ["project_id"], name: "index_lfs_objects_projects_on_project_id", using: :btree
 
+  create_table "lists", force: :cascade do |t|
+    t.integer  "board_id",               null: false
+    t.integer  "label_id"
+    t.integer  "list_type",  default: 0, null: false
+    t.integer  "position",               null: false
+    t.datetime "created_at",             null: false
+    t.datetime "updated_at",             null: false
+  end
+
+  add_index "lists", ["board_id"], name: "index_lists_on_board_id", using: :btree
+  add_index "lists", ["label_id"], name: "index_lists_on_label_id", using: :btree
+
   create_table "members", force: :cascade do |t|
     t.integer  "access_level",       null: false
     t.integer  "source_id",          null: false
@@ -1116,6 +1136,9 @@ ActiveRecord::Schema.define(version: 20160810142633) do
 
   add_index "web_hooks", ["project_id"], name: "index_web_hooks_on_project_id", using: :btree
 
+  add_foreign_key "boards", "projects"
+  add_foreign_key "lists", "boards"
+  add_foreign_key "lists", "labels"
   add_foreign_key "personal_access_tokens", "users"
   add_foreign_key "protected_branch_merge_access_levels", "protected_branches"
   add_foreign_key "protected_branch_push_access_levels", "protected_branches"

spec/models/board_spec.rb

+require 'rails_helper'
+
+describe Board do
+  describe 'relationships' do
+    it { is_expected.to belong_to(:project) }
+    it { is_expected.to have_many(:lists).dependent(:destroy) }
+  end
+
+  describe 'validations' do
+    it { is_expected.to validate_presence_of(:project) }
+  end
+end

spec/models/list_spec.rb

+require 'rails_helper'
+
+describe List do
+  describe 'relationships' do
+    it { is_expected.to belong_to(:board) }
+    it { is_expected.to belong_to(:label) }
+  end
+
+  describe 'validations' do
+    it { is_expected.to validate_presence_of(:board) }
+    it { is_expected.to validate_presence_of(:label) }
+    it { is_expected.to validate_presence_of(:list_type) }
+    it { is_expected.to validate_presence_of(:position) }
+    it { is_expected.to validate_numericality_of(:position).only_integer.is_greater_than_or_equal_to(0) }
+
+    it 'does not require label to be set when list_type is set to backlog' do
+      subject.list_type = :backlog
+
+      expect(subject).not_to validate_presence_of(:label)
+    end
+
+    it 'does not require label to be set when list_type is set to done' do
+      subject.list_type = :done
+
+      expect(subject).not_to validate_presence_of(:label)
+    end
+  end
+end

spec/models/project_spec.rb

@@ -23,6 +23,7 @@ describe Project, models: true do
     it { is_expected.to have_one(:slack_service).dependent(:destroy) }
     it { is_expected.to have_one(:pushover_service).dependent(:destroy) }
     it { is_expected.to have_one(:asana_service).dependent(:destroy) }
+    it { is_expected.to have_one(:board).dependent(:destroy) }
     it { is_expected.to have_many(:commit_statuses) }
     it { is_expected.to have_many(:pipelines) }
     it { is_expected.to have_many(:builds) }