Ruby On Rails Classroom image

Pooja  Negi / Student / Web Technology

To post your Question Join Classroom
Lesson Topics's No:-  |1 | 2 | 3 | 4|Last
Lessons:- Followed users

  Followed users

We come now to the heart of the Relationship associations: followed_users and followers. We start with followed_users, as shown Listing 11.9.


The implementation uses has_many through for the first time: A user has many following through relationships, as illustrated in Figure 11.7. By default, in a has_many through association Rails looks for a foreign key corresponding to the singular version of the association; in other words, code like

has many :followeds, through: :relationships


would assemble an array using the followed_id in the relationships table. But, as noted in Section 11.1.1, user.followeds is rather awkward; far more natural is to use ‘‘followed users’’ as a plural of ‘‘followed,’’ and write instead user.followed_users for the array of followed users. Naturally, Rails allows us to override the default, in this case using the :source parameter (Listing 11.10), which explicitly tells Rails that the source of the followed_users array is the set of followed ids.


Pooja   Negi

Skills    Ruby On Rails

Qualifications :- High School - SSN high school, College/University - HNBGU, College/University - SRHU,
Location :-Ranipokhari,Rishikesh,Uttarakhand,India
Description:- Student

  Students (0)