Railscasts - Console Tricks
より
期待せずに見たが、知らんことだらけだった。
--sandbox
rollbackしてくれると。
$ ruby script/console --help
Usage: console [environment] [options]
-s, --sandbox Rollback database modifications on exit.
--irb=[irb] Invoke a different irb.
--debugger Enable ruby-debugging for the console.
y
なんぞ。yamlに変換してくれるんか。
>> m = Memo.all => [#<Memo id: 1, title: "a", body: "", created_at: "2010-02-28 06:56:26", updated_at: "2010-02-28 06:56:26">, #<Memo id: 2, title: "aaa", body: "bbb", created_at: "2010-02-28 06:56:39", updated_at: "2010-02-28 06:56:39">] ?> y m --- - !ruby/object:Memo attributes: created_at: 2010-02-28 06:56:26 title: a body: "" updated_at: 2010-02-28 06:56:26 id: "1" attributes_cache: {} - !ruby/object:Memo attributes: created_at: 2010-02-28 06:56:39 title: aaa body: bbb updated_at: 2010-02-28 06:56:39 id: "2" attributes_cache: {} => nil
ri y
--------------------------------------------------------------- Kernel#y
y( object, *objects )
------------------------------------------------------------------------
Prints any supplied _objects_ out in YAML. Intended as a variation
on +Kernel::p+.
S = Struct.new(:name, :state)
s = S['dave', 'TX']
y s
_produces:_
--- !ruby/struct:S
name: dave
state: TX
methods検索
controllerの〜pathってなんだっけって時はgrepも使える。
?> app.class => ActionController::Integration::Session ?>app.methods.grep(/_path$/).sort => ["edit_memo_path", "edit_polymorphic_path", "formatted_edit_memo_path", "formatted_memo_path", "formatted_memos_path", "formatted_new_memo_path", "formatted_polymorphic_path", "hash_for_edit_memo_path", "hash_for_memo_path", "hash_for_memos_path", "hash_for_new_memo_path", "memo_path", "memos_path", "new_memo_path", "new_polymorphic_path", "polymorphic_path"]
_
前回の実行結果が出力可能
>> y _ --- - edit_memo_path - edit_polymorphic_path - formatted_edit_memo_path - formatted_memo_path - formatted_memos_path - formatted_new_memo_path - formatted_polymorphic_path - hash_for_edit_memo_path - hash_for_memo_path - hash_for_memos_path - hash_for_new_memo_path - memo_path - memos_path - new_memo_path - new_polymorphic_path - polymorphic_path => nil
