set_local_assigns!

# File activerecord/lib/rails/generators/active_record/migration/migration_generator.rb, line 26
        def set_local_assigns!
          @migration_template = "migration.rb"
          case file_name
          when /^(add)_.*_to_(.*)/, /^(remove)_.*?_from_(.*)/
            @migration_action = $1
            @table_name       = normalize_table_name($2)
          when /join_table/
            if attributes.length == 2
              @migration_action = "join"
              @join_tables      = pluralize_table_names? ? attributes.map(&:plural_name) : attributes.map(&:singular_name)

              set_index_names
            end
          when /^create_(.+)/
            @table_name = normalize_table_name($1)
            @migration_template = "create_table_migration.rb"
          end
        end