Add task model

app/models/task.rb

+# == Schema Information
+#
+# Table name: tasks
+#
+#  id          :integer          not null, primary key
+#  user_id     :integer          not null
+#  project_id  :integer          not null
+#  target_id   :integer          not null
+#  target_type :string           not null
+#  author_id   :integer
+#  action      :integer
+#  state       :string           not null
+#  created_at  :datetime
+#  updated_at  :datetime
+#
+
+class Task < ActiveRecord::Base
+  belongs_to :author, class_name: "User"
+  belongs_to :project
+  belongs_to :target, polymorphic: true, touch: true
+  belongs_to :user
+
+  validates :action, :project, :target, :user, presence: true
+
+  state_machine :state, initial: :pending do
+    state :pending
+    state :done
+  end
+end

app/models/user.rb

@@ -140,7 +140,7 @@ class User < ActiveRecord::Base
   has_one  :abuse_report,             dependent: :destroy
   has_many :spam_logs,                dependent: :destroy
   has_many :builds,                   dependent: :nullify, class_name: 'Ci::Build'
-
+  has_many :tasks,                    dependent: :destroy
 
   #
   # Validations

db/migrate/20160212123307_create_tasks.rb

+class CreateTasks < ActiveRecord::Migration
+  def change
+    create_table :tasks do |t|
+      t.references :user, null: false, index: true
+      t.references :project, null: false, index: true
+      t.references :target, polymorphic: true, null: false, index: true
+      t.integer :author_id, index: true
+      t.integer :action, null: false
+      t.string :state, null: false, index: true
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -824,6 +824,24 @@ ActiveRecord::Schema.define(version: 20160217100506) do
 
   add_index "tags", ["name"], name: "index_tags_on_name", unique: true, using: :btree
 
+  create_table "tasks", force: :cascade do |t|
+    t.integer  "user_id",     null: false
+    t.integer  "project_id",  null: false
+    t.integer  "target_id",   null: false
+    t.string   "target_type", null: false
+    t.integer  "author_id"
+    t.integer  "action",      null: false
+    t.string   "state",       null: false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  add_index "tasks", ["author_id"], name: "index_tasks_on_author_id", using: :btree
+  add_index "tasks", ["project_id"], name: "index_tasks_on_project_id", using: :btree
+  add_index "tasks", ["state"], name: "index_tasks_on_state", using: :btree
+  add_index "tasks", ["target_type", "target_id"], name: "index_tasks_on_target_type_and_target_id", using: :btree
+  add_index "tasks", ["user_id"], name: "index_tasks_on_user_id", using: :btree
+
   create_table "users", force: :cascade do |t|
     t.string   "email",                       default: "",    null: false
     t.string   "encrypted_password",          default: "",    null: false

spec/models/task_spec.rb

+# == Schema Information
+#
+# Table name: tasks
+#
+#  id          :integer          not null, primary key
+#  user_id     :integer          not null
+#  project_id  :integer          not null
+#  target_id   :integer          not null
+#  target_type :string           not null
+#  author_id   :integer
+#  action      :integer
+#  state       :string           not null
+#  created_at  :datetime
+#  updated_at  :datetime
+#
+
+require 'spec_helper'
+
+describe Task, models: true do
+  describe 'relationships' do
+    it { is_expected.to belong_to(:author).class_name("User") }
+    it { is_expected.to belong_to(:project) }
+    it { is_expected.to belong_to(:target).touch(true) }
+    it { is_expected.to belong_to(:user) }
+  end
+
+  describe 'validations' do
+    it { is_expected.to validate_presence_of(:action) }
+    it { is_expected.to validate_presence_of(:target) }
+    it { is_expected.to validate_presence_of(:user) }
+  end
+end

spec/models/user_spec.rb

@@ -92,6 +92,7 @@ describe User, models: true do
     it { is_expected.to have_many(:identities).dependent(:destroy) }
     it { is_expected.to have_one(:abuse_report) }
     it { is_expected.to have_many(:spam_logs).dependent(:destroy) }
+    it { is_expected.to have_many(:tasks).dependent(:destroy) }
   end
 
   describe 'validations' do