Rails: Search in has_one association

问题

I have a model called User which has_one Player. A Player belongs_to a User.

I want to find all the Players which Users attributes City has a particular value. Right now I have this in my Player model:

def find
  User.find(:all, :conditions => ['city LIKE ?', "%#{city}%"])
end

However that gives me the User. I want the Players which Users satisfy that condition.

How do I do that?

回答1:

Try this.

Player.joins(:user).where('user.city LIKE ?', "%#{city}%")

来源：https://stackoverflow.com/questions/11337543/rails-search-in-has-one-association