rename tables

+class PoolsController < CrudController::Base
+  enable_gatekeeper
+  guard_bifrost
+
+end

+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: heimdall_engine_roles
+#
+#  id         :integer          not null, primary key
+#  name       :string
+#  created_at :datetime
+#  updated_at :datetime
+#  deleted_at :datetime
+#  erasable   :boolean
+#
+class Pool < ApplicationRecord
+
+  validates :name, :editable_unitl, presence: true
+
+  has_many :matches, dependent: :destroy, inverse_of: :pool
+
+  accepts_nested_attributes_for :matches, reject_if: :all_blank,
+    allow_destroy: true
+end

@@ -2,4 +2,6 @@ Rails.application.routes.draw do
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
   HeimdallEngine.load_routes
   root 'application#root'
+
+  resources :pools
 end

 class CreateProject < ActiveRecord::Migration[5.0]
   def change
-    create_table :match do |t|
+    create_table :matches do |t|
       t.string  :local, null: false
       t.string  :visit, null: false
       t.date    :date, null: false
@@ -10,13 +10,13 @@ class CreateProject < ActiveRecord::Migration[5.0]
       t.integer :pool_id, null: false
     end
 
-    create_table :pool do |t|
+    create_table :pools do |t|
       t.string    :name, null: false
       t.datetime  :editable_until, null: false
       t.boolean   :active
     end
 
-    create_table :bet do |t|
+    create_table :bets do |t|
       t.integer   :match_id, null: false
       t.integer   :user_id, null: false 
       t.integer   :score_local, null: false