diff options
Diffstat (limited to 'activerecord/lib/active_record/migration/command_recorder.rb')
| -rw-r--r-- | activerecord/lib/active_record/migration/command_recorder.rb | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/activerecord/lib/active_record/migration/command_recorder.rb b/activerecord/lib/active_record/migration/command_recorder.rb index 36256415df..dcc2362397 100644 --- a/activerecord/lib/active_record/migration/command_recorder.rb +++ b/activerecord/lib/active_record/migration/command_recorder.rb @@ -72,7 +72,7 @@ module ActiveRecord [:create_table, :create_join_table, :rename_table, :add_column, :remove_column, :rename_index, :rename_column, :add_index, :remove_index, :add_timestamps, :remove_timestamps, - :change_column_default, :add_reference, :remove_reference, :transaction, + :add_reference, :remove_reference, :transaction, :drop_join_table, :drop_table, :execute_block, :enable_extension, :change_column, :execute, :remove_columns, :change_column_null, :add_foreign_key, :remove_foreign_key @@ -151,19 +151,31 @@ module ActiveRecord end def invert_remove_index(args) - table, options = *args - - unless options && options.is_a?(Hash) && options[:column] - raise ActiveRecord::IrreversibleMigration, "remove_index is only reversible if given a :column option." + table, options_or_column = *args + if (options = options_or_column).is_a?(Hash) + unless options[:column] + raise ActiveRecord::IrreversibleMigration, "remove_index is only reversible if given a :column option." + end + options = options.dup + [:add_index, [table, options.delete(:column), options]] + elsif (column = options_or_column).present? + [:add_index, [table, column]] end - - options = options.dup - [:add_index, [table, options.delete(:column), options]] end alias :invert_add_belongs_to :invert_add_reference alias :invert_remove_belongs_to :invert_remove_reference + def invert_change_column_default(args) + table, column, options = *args + + unless options && options.is_a?(Hash) && options.has_key?(:from) && options.has_key?(:to) + raise ActiveRecord::IrreversibleMigration, "change_column_default is only reversible if given a :from and :to option." + end + + [:change_column_default, [table, column, from: options[:to], to: options[:from]]] + end + def invert_change_column_null(args) args[2] = !args[2] [:change_column_null, args] @@ -184,6 +196,16 @@ module ActiveRecord [:remove_foreign_key, [from_table, options]] end + def invert_remove_foreign_key(args) + from_table, to_table, remove_options = args + raise ActiveRecord::IrreversibleMigration, "remove_foreign_key is only reversible if given a second table" if to_table.nil? || to_table.is_a?(Hash) + + reversed_args = [from_table, to_table] + reversed_args << remove_options if remove_options + + [:add_foreign_key, reversed_args] + end + # Forwards any missing method call to the \target. def method_missing(method, *args, &block) if @delegate.respond_to?(method) |