我的一个AR模型中有以下代码段:
I have the snippet below in one of my AR models:
after_update :cache_bust模型中的 cache_bust 方法接受用于设置值的参数(布尔值)本身默认为 false 。
The cache_bust method in the model accepts a parameter (boolean) that sets the value of itself to false by default.
如何传递 true 到模型中从上面定义的ActiveRecord回调中的此方法?
How can I pass true to this method in the model from my ActiveRecord callback defined above it?
例如: after_update:cache_bust(true)因为它是一个符号而无法工作,如何将 true 传递给方法的参数?
Ex: after_update :cache_bust(true) does not work because it's a symbol, how can I pass true to the method's param?
推荐答案
回调宏接受四种类型的回调:方法引用(符号),回调对象,内联方法(使用proc)和内联eval方法(
There are four types of callbacks accepted by the callback macros: Method references (symbol), callback objects, inline methods (using a proc), and inline eval methods (using a string).
尝试一下吗?
after_update -> { cache_bust(true) }更多推荐
Rails将参数/参数传递给ActiveRecord回调函数
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