method

migration_template

v5.1.7 - Show latest stable - 0 notes - Class: Rails::Generators::Migration

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migration_template(source, destination, 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.

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

Show source

# File railties/lib/rails/generators/migration.rb, line 54
      def migration_template(source, destination, config = {})
        source = File.expand_path(find_in_source_paths(source.to_s))

        set_migration_assigns!(destination)
        context = instance_eval("binding")

        dir, base = File.split(destination)
        numbered_destination = File.join(dir, ["%migration_number%", base].join("_"))

        create_migration numbered_destination, nil, config do
          ERB.new(::File.binread(source), nil, "-", "@output_buffer").result(context)
        end
      end

migration_template

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