diff options
Diffstat (limited to 'activerecord/lib/active_record/migration/command_recorder.rb')
| -rw-r--r-- | activerecord/lib/active_record/migration/command_recorder.rb | 176 |
1 files changed, 88 insertions, 88 deletions
diff --git a/activerecord/lib/active_record/migration/command_recorder.rb b/activerecord/lib/active_record/migration/command_recorder.rb index 0fa665c7e0..6b2c5d8da5 100644 --- a/activerecord/lib/active_record/migration/command_recorder.rb +++ b/activerecord/lib/active_record/migration/command_recorder.rb @@ -112,127 +112,127 @@ module ActiveRecord private - module StraightReversions - private - { transaction: :transaction, - execute_block: :execute_block, - create_table: :drop_table, - create_join_table: :drop_join_table, - add_column: :remove_column, - add_timestamps: :remove_timestamps, - add_reference: :remove_reference, - enable_extension: :disable_extension - }.each do |cmd, inv| - [[inv, cmd], [cmd, inv]].uniq.each do |method, inverse| - class_eval <<-EOV, __FILE__, __LINE__ + 1 + module StraightReversions + private + { transaction: :transaction, + execute_block: :execute_block, + create_table: :drop_table, + create_join_table: :drop_join_table, + add_column: :remove_column, + add_timestamps: :remove_timestamps, + add_reference: :remove_reference, + enable_extension: :disable_extension + }.each do |cmd, inv| + [[inv, cmd], [cmd, inv]].uniq.each do |method, inverse| + class_eval <<-EOV, __FILE__, __LINE__ + 1 def invert_#{method}(args, &block) # def invert_create_table(args, &block) [:#{inverse}, args, block] # [:drop_table, args, block] end # end EOV - end + end + end end - end - include StraightReversions + include StraightReversions - def invert_drop_table(args, &block) - if args.size == 1 && block == nil - raise ActiveRecord::IrreversibleMigration, "To avoid mistakes, drop_table is only reversible if given options or a block (can be empty)." + def invert_drop_table(args, &block) + if args.size == 1 && block == nil + raise ActiveRecord::IrreversibleMigration, "To avoid mistakes, drop_table is only reversible if given options or a block (can be empty)." + end + super end - super - end - def invert_rename_table(args) - [:rename_table, args.reverse] - end + def invert_rename_table(args) + [:rename_table, args.reverse] + end - def invert_remove_column(args) - raise ActiveRecord::IrreversibleMigration, "remove_column is only reversible if given a type." if args.size <= 2 - super - end + def invert_remove_column(args) + raise ActiveRecord::IrreversibleMigration, "remove_column is only reversible if given a type." if args.size <= 2 + super + end - def invert_rename_index(args) - [:rename_index, [args.first] + args.last(2).reverse] - end + def invert_rename_index(args) + [:rename_index, [args.first] + args.last(2).reverse] + end - def invert_rename_column(args) - [:rename_column, [args.first] + args.last(2).reverse] - end + def invert_rename_column(args) + [:rename_column, [args.first] + args.last(2).reverse] + end - def invert_add_index(args) - table, columns, options = *args - options ||= {} + def invert_add_index(args) + table, columns, options = *args + options ||= {} - index_name = options[:name] - options_hash = index_name ? { name: index_name } : { column: columns } + index_name = options[:name] + options_hash = index_name ? { name: index_name } : { column: columns } - [:remove_index, [table, options_hash]] - end + [:remove_index, [table, options_hash]] + end - def invert_remove_index(args) - 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." + def invert_remove_index(args) + 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]] - elsif (column = options_or_column).present? - [:add_index, [table, column]] end - end - alias :invert_add_belongs_to :invert_add_reference - alias :invert_remove_belongs_to :invert_remove_reference + 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 - 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 - 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." + [:change_column_default, [table, column, from: options[:to], to: options[:from]]] 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] + end - def invert_change_column_null(args) - args[2] = !args[2] - [:change_column_null, args] - end + def invert_add_foreign_key(args) + from_table, to_table, add_options = args + add_options ||= {} - def invert_add_foreign_key(args) - from_table, to_table, add_options = args - add_options ||= {} + if add_options[:name] + options = { name: add_options[:name] } + elsif add_options[:column] + options = { column: add_options[:column] } + else + options = to_table + end - if add_options[:name] - options = { name: add_options[:name] } - elsif add_options[:column] - options = { column: add_options[:column] } - else - options = to_table + [:remove_foreign_key, [from_table, options]] end - [: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) + 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 + reversed_args = [from_table, to_table] + reversed_args << remove_options if remove_options - [:add_foreign_key, reversed_args] - end + [: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) - @delegate.send(method, *args, &block) - else - super + def method_missing(method, *args, &block) + if @delegate.respond_to?(method) + @delegate.send(method, *args, &block) + else + super + end end - end end end end |