Question

Im trying to figure out how to use a column from another model in my Profile model

User model
  has_one :profile

Profile model
  belongs_to :user, :dependent => :destroy

Tried all possible options to no avail

In my profile model:

def get_column_value_from_user_model
    user.username
end

What would be the right way to get a value from user model inside my profile model?

When creating a new User that calls above function to get the value from User model, from the Rails Console I get this error:

NoMethodError: undefined method `username' for nil:NilClass

the username column in User model exists.

Answer 1

Your Error

NoMethodError: undefined method `username' for nil:NilClass

means there is no user object associated with that profile. Could you check what <#your_profile_object>.user_id returns?