rest api meaning in POST or PUT

Question

I have referenced stackexchange's RESTful APIs.

From this, I have one situation that makes me confused.

I have this API:

/users/{user_id}/followings

On this API,

GET means get the all follwing user lists of user_id . This is good.

But, when I want to add one follwing user(this is kind of adding following user like instagram or facebook), should I have to use above REST API with PUT ?

I'm confused using PUT with above API. Because, as above API means all follwing lists of user_id , if I use this API to PUT , it means put the all follwing users to user_id , not one following users.

Is it just OK to use above API to add(using put method) one following user to user_id ?

Answer 1

You can just POST a new user to /users/{user_id}/followings . I wouldn't PUT on a list - you can use a PATCH add if you want to go down that path - see this link .