Rails Active Record查询来推送两个活动记录关系对象

Question

first_user = User.first
last_user = User.last

How to add two relation object ? This does not work.

my_users = first_user + last_user

I can use array and push the first and last user. But pagination will not work for array

users = my_users.paginate# (using will_paginate)

But this works

users = User.limit(2).paginate

Answer 1

You cannot add two objects,it should be in array format always then only you can do pagination using will paginate.

you have to follow the below step

 user_all = [] 

 first_user = User.first 

 last_user = User.last 

 user_all << first_user

 user_all << last_user

 users = user_all.paginate

Answer 2

This will work, but makes at least three SQL calls:

first_user = User.first
last_user = User.last
users = User.where(id: [first_user.id, last_user.id]).paginate