Ruby On Rails Classroom image

Neha  Jaggi / Professional / Web Technology

 
To post your Question Join Classroom
 
 
Question  Tutor Notes
 
Lesson Topics's No:-  First|1 | 2 | 3 | 4|Last
Lessons:- A First Feed Implementation

Situations like the one illustrated above, where the same method (e.g., to_s) gets called on each element, are common enough that there’s a shorthand notation using an ampersand & and a symbol corresponding to the method:12

 

Using the join method (Section 4.3.1), we can create a string composed of the ids by joining them on comma-space :

 

We can use the above method to construct the necessary array of followed user ids by calling id on each element in user.followed_users. For example, for the first user in the database this array appears as follows:

 

In fact, because this sort of construction is so useful, Active Record provides it by default:

 
 
 
image
Neha  Jaggi

Skills    Ruby On Rails

Qualifications :- High School - , College/University - Graphic Era Hill University, Dehradun, College/University - ,
Location :-Dehradun,Dehradun,UTTARAKHAND,India
Description:-

Experienced Software Developer with a demonstrated history of working in the Information Technology and services industry. Skilled in Web Technologies (Ruby on Rails, PostgreSQL, php, Laravel and AJAX). 


Explore
 

  Students (0)