Rails:传递关注点

问题描述

DHH撰写了文章，主张使用关注点.这似乎是一个好习惯，在很多情况下，它们可以与我的应用很好地配合使用.但是，在几种情况下，多个模型具有相似但略有不同的方法，例如:

DHH wrote an article advocating for the use of concerns. It seems like a good practice, and in a lot of cases, they work well with my app. There are several cases, however, where multiple models have similar but slightly different methods, such as:

def find_or_create_membership
  user_membership = User::Membership.where(:group_id => self.group_id,
  :user_id => self.invitee_id).first_or_create(:status => "invited")
end

和:

def find_or_create_membership
  user_membership = User::Membership.where(:group_id => self.group_id,
  :user_id => self.invitee_id).first_or_create(:status => "declined")
end

除了第一个将status设置为"invited"，第二个将"clined"设置为"declined"之外，这些方法是相同的.有什么办法可以通过关注将参数传递给这些方法吗?

These methods are identical save that the first sets status to "invited" and the second to "declined". Is there a way I could pass an argument to these methods via a concern?

推荐答案

您可能对 Paramix 感兴趣.

不过，我自己从未使用过它.邓诺，闻起来像是假的好主意.

Never used it myself, though. Dunno, smells like a False-Good-Idea©.

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