How to use becomes in Rails

Question

I have class PostClass and Comment. I have a post object and you want to convert it to a Comment object. I went through the Rails api and found that it was becoming (klass). So far, there is no connection between Post and Comment. So I tried

@post.becomes(Comment)

but method @postnot found. Did I miss something?

Answer 1

I assume that you are talking about classes originating from ActiveRecord :: Base. In this case, I think you have two options if you really want to convert messages to comments (which seems a little strange to me):

• (, ) , ,
• , post, post.

Answer 2

, . .

Answer 3

Note that a new object will be returned, but will not modify an existing object. You need to complete the task yourself

@post = @post.becomes(Comment)

See documentation ActiveRecord :: Persistence # will become