regex - Yii URL 模式中的 Yii 合并和可选字符串

Question

有没有办法整合以下 Yii URL 模式？怎么说，例如一个部分是可选的。

  '<category:.+>-rezepte/mit-<ingredient:\w+>/<effort:\d+>/<difficulty:\w+>'    =>  'recipes/index',
  '<category:.+>-rezepte/mit-<ingredient:\w+>/<effort:\d+>'                     =>  'recipes/index',
  '<category:.+>-rezepte/mit-<ingredient:\w+>'                                  =>  'recipes/index',
  '<category:.+>-rezepte'                                                       =>  'recipes/index',


  'rezepte-mit-<ingredient:.+>/<category:\w+>/<effort:\d+>/<difficulty:\w+>'    =>  'recipes/index',
  'rezepte-mit-<ingredient:.+>/<category:\w+>/<effort:\d+>'                     =>  'recipes/index',
  'rezepte-mit-<ingredient:.+>/<category:\w+>'                                  =>  'recipes/index',
  'rezepte-mit-<ingredient:.+>'                                                 =>  'recipes/index',

Answer 1

根据此论坛帖子，您应该能够执行以下操作：

array(
    'recipes/index',
    'pattern' => '<category:\w+>-rezepte(/mit-<ingredient:\w+>)?(/<effort:\d+>)?(/<difficulty:\w+>)?',
),