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铁路有条件主计长
原标题:Conditional Controller in Rails

我对铁路非常新,所以我学习的时候 忍耐我。

我有一个模型, show , 带有属性 preview_url 。 我如何构建一个只返回 shows 且有非n-null preview_url 的调用, 以及用什么最佳方式来形容控制器方法?

地方主机3: 30/shows/? preview_url?

提前感谢。

最佳回答

在您的 显示控制器 中, 您将会有一个名为 和_ preview 这样的动作 :

def with_preview
  @shows = Show.where( preview_url IS NOT NULL ).all
end

此动作的url将是 /shows/ withth_ preview

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