Question

where all is devise’s current_user method is available? Models? Controllers? Views? Helpers?

I have a Question model which belongs to User. So while saving new Question what is the best way to store user_id in Question?

QuestionsController as of now

def create
 @question = Question.create(params[:question])
 @question.save
 render text: "Question created!"
end

Answer 1

From your code, and assuming that you have a has_many relationship, I would say that the best way to create a question for a user would be something like this:

@question = current_user.questions.create(params[:question])

Also, create is already calling save. If you want to manually call it you should use current_user.questions.build.