如何根据滑轨中的（表Y /列Z）定义（表A /列X）？

Question

Guys I need to make it like this:

I have two tables

Users table with column name

and

Profiles table with column profilename

I need to make it so that when user is created and name is given to a user, It also creates Profile and gives it profilename same as user's name.

Thanks in advance :)

Answer 1

Have a profile which belongs to the user so it'd have a user_id field. Then use the after_create callback and associations

class User

  has_one :profile
  after_create :make_profile

  def make_profile
    create_profile(:profilename => name)
  end

end

class Profile
  belongs_to :user
end