Displaying 1 result from an estimated 1 matches for "attributes_of_student".
2007 May 14
0
building and saving has_many and has_one relations
...long post. so please bear with me :)
First let''s consider the has_one scenario. Let''s say I have a student
who must own exactly one car:
class Student
has_one(:car)
end
class Car
belongs_to(:student)
validates_presence_of(:student_id)
end
When I do
student = Student.new(attributes_of_student)
car = student.build_car(attributes_of_car)
The car is created, and I can do:
student.save!
car.save!
I don''t understand why build_car also assigns the car to the student.
According to the docs [1], build is an equivalent, in this case, for:
Car.new("student_id" => student...