method

migration_template

v8.0.0 - Show latest stable - Class: Rails::Generators::Migration

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 number is prepended to the destination file name.

The migration number, 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"

# File railties/lib/rails/generators/migration.rb, line 56
      def migration_template(source, destination, config = {})
        source = File.expand_path(find_in_source_paths(source.to_s))

        set_migration_assigns!(destination)

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

        file = create_migration numbered_destination, nil, config do
          ERB.new(::File.binread(source), trim_mode: "-", eoutvar: "@output_buffer").result(binding)
        end
        Rails::Generators.add_generated_file(file)
      end

migration_template

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