Rails 4 how to make enrolment to a course for users (controller, view, model) -

i trying build simple learning app rails , facing problems. when user signs course try make viewed_course record them can display viewed_course on profile page.

i can't figure out how set different controllers creates viewed_record when on course controller /index.

how can modify course/index view creates new viewed record current signed in user.

i using devise.

class course     has_many :lessons end  class lesson   #fields: course_id   belongs_to :course end class user   has_many :viewed_lessons   has_many :viewed_courses end class viewedlesson   #fields: user_id, lesson_id, completed(boolean)     belongs_to :user   belongs_to :lesson end class viewedcourse   #fields: user_id, course_id, completed(boolean)     belongs_to :user   belongs_to :course   end 

thank in advance helping me out!

something should it, in courses controller show action (index action should list of courses, show action should viewing individual course):

class coursescontroller < applicationcontroller   def index     @courses = course.all   end    def show     @course = course.find(params[:id])     current_user.viewed_courses.create(course: @course)   end   end 

one gotcha create new viewed course every time viewed page, need logic add each course once.

perhaps this:

def show   @course = course.find(params[:id])   current_user.viewed_courses.create(course: @course) unless viewedcourse.exists?(user_id: current_user.id, course_id: @course.id) end