On 20 July 2015 at 00:53, Sadaf Noor <em...@sadafnoor.com> wrote: > > Hello, > I am having a little bit problem in deleting duplicate entry of my many to > many tables. > > In many to many fields delete method is deleting all the occurrence of > collection. Say I have (demo example): > > class user < ActiveRecord::Base > has_and_belongs_to_many :cars > end > > class car < ActiveRecord::Base > has_and_belongs_to_many :users > end > > users and cars are many to many relationship, I have defined my users_cars > table. Now user can have repetitive car entry as relation. For example: > > Car: A,B,C User: U1,U2,U3 > > U1=[A,B,C,A,A,A,B]
How can a user have the same car multiple times, it doesn't make sense. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/CAL%3D0gLvUZ8StTffzrGwemBgTUDzgZwO7o1ofxhvmeR5%3DFC1H6A%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
