method

migration_template

v3.0.9 - Show latest stable - 0 notes - Class: Rails::Generators::Migration

migration_template(source, destination=nil, config={}) public

Creates a migration template at the given destination. The difference to the default template method is that the migration version is appended to the destination file name.

The migration version, migration file name, migration class name are available as instance variables in the template to be rendered.

Examples

migration_template "migration.rb", "db/migrate/add_foo_to_bar.rb"

Show source

# File railties/lib/rails/generators/migration.rb, line 45
      def migration_template(source, destination=nil, config={})
        destination = File.expand_path(destination || source, self.destination_root)

        migration_dir = File.dirname(destination)
        @migration_number     = self.class.next_migration_number(migration_dir)
        @migration_file_name  = File.basename(destination).sub(/\.rb$/, '')
        @migration_class_name = @migration_file_name.camelize

        destination = self.class.migration_exists?(migration_dir, @migration_file_name)

        if behavior == :invoke
          raise Error, "Another migration is already named #{@migration_file_name}: #{destination}" if destination
          destination = File.join(migration_dir, "#{@migration_number}_#{@migration_file_name}.rb")
        end

        template(source, destination, config)
      end

migration_template

Related methods

Examples