extracted tables migration to multi-files

lib/generators/rating/install_generator.rb

@@ -7,7 +7,8 @@ module Rating
     desc 'creates Rating migration'
 
     def create_migration
-      template 'db/migrate/create_rating_tables.rb', "db/migrate/#{timestamp}_create_rating_tables.rb"
+      template 'db/migrate/create_rating_table.rb', "db/migrate/#{timestamp}_create_rating_table.rb"
+      template 'db/migrate/create_rate_table.rb', "db/migrate/#{timestamp}_create_rate_table.rb"
     end
 
     private

lib/generators/rating/templates/db/migrate/create_rate_table.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class CreateRateTable < ActiveRecord::Migration[5.0]
+  def change
+    create_table :rating_rates do |t|
+      t.decimal :value, default: 0, precision: 25, scale: 16
+
+      t.references :author,    index: true, null: false, polymorphic: true
+      t.references :resource,  index: true, null: false, polymorphic: true
+      t.references :scopeable, index: true, null: true, polymorphic: true
+
+      t.timestamps null: false
+    end
+
+    add_index :rating_rates, %i[author_id author_type resource_id resource_type scopeable_id scopeable_type],
+      name:   :index_rating_rates_on_author_and_resource_and_scopeable,
+      unique: true
+  end
+end

lib/generators/rating/templates/db/migrate/create_rating_table.rb

@@ -1,21 +1,7 @@
 # frozen_string_literal: true
 
-class CreateRatingTables < ActiveRecord::Migration[5.0]
+class CreateRatingTable < ActiveRecord::Migration[5.0]
   def change
-    create_table :rating_rates do |t|
-      t.decimal :value, default: 0, precision: 25, scale: 16
-
-      t.references :author,    index: true, null: false, polymorphic: true
-      t.references :resource,  index: true, null: false, polymorphic: true
-      t.references :scopeable, index: true, null: true, polymorphic: true
-
-      t.timestamps null: false
-    end
-
-    add_index :rating_rates, %i[author_id author_type resource_id resource_type scopeable_id scopeable_type],
-      name:   :index_rating_rates_on_author_and_resource_and_scopeable,
-      unique: true
-
     create_table :rating_ratings do |t|
       t.decimal :average,  default: 0, mull: false, precision: 25, scale: 16
       t.decimal :estimate, default: 0, mull: false, precision: 25, scale: 16

spec/support/migrate.rb

@@ -1,11 +1,13 @@
 # frozen_string_literal: true
 
-require File.expand_path('../../lib/generators/rating/templates/db/migrate/create_rating_tables.rb', __dir__)
+require File.expand_path('../../lib/generators/rating/templates/db/migrate/create_rating_table.rb', __dir__)
+require File.expand_path('../../lib/generators/rating/templates/db/migrate/create_rate_table.rb', __dir__)
 
 Dir[File.expand_path('db/migrate/*.rb', __dir__)].each { |file| require file }
 
 CreateArticlesTable.new.change
 CreateAuthorsTable.new.change
 CreateCategoriesTable.new.change
-CreateRatingTables.new.change
+CreateRateTable.new.change
+CreateRatingTable.new.change
 AddCommentOnRatingRatesTable.new.change