has_many, belongs_to relation in active record migration rails 4

Question

I have a User model and a Task model. I have not mentioned any relation between them while creating them.

I need to establish that U

Answer 1

The migration will add the user's id to the task table so they know about each other

rails g migration AddUserIdToTask user_id:integer

then

rake db:migrate

And after update your controllers and views so that tasks can't be created on their own but must correspond to a user