Mongoid pagination

Question

I tried

@posts = Post.page(params[:page]).per_page(10)

and

@posts = Post.paginate(:page => 1, :per_page => 10)    


        

Answer 1

You should use Kaminari https://github.com/amatsuda/kaminari

Answer 2

Use the following gem.

Very helpful.

https://github.com/lucasas/will_paginate_mongoid

Answer 3

Posting several years later, in case someone else faces the same challenge.

kaminari-mongoid was released in 2016, and is currently maintained.

https://github.com/kaminari/kaminari-mongoid

All the goodness of Kaminiari for Mongoid, including appropriate handling of Mongoid::Criteria results, which was possibly the cause of the OP's error.

Answer 4

silly thing, but it worked for me in sinatra after i added require 'mongoid-pagination' to app.rb

Answer 5

To update a bit the answers, now exists the Pagy gem, also much more performant (cpu/mem) than will_paginate and kaminari. This is a migration guide

Answer 6

Still using will_paginate is also okay.

This thread has same issue: undefined method `paginate' for Array on Rails 3 with mongoid

The main point to fix the error is to add this line before the controller call paginate library:

require 'will_paginate/array'

It should be added to default config file if you use mongoid for the whole project.

Hope the explanation helpful.

Reference from origin gem source: https://github.com/mislav/will_paginate/wiki/Backwards-incompatibility at "WillPaginate::Collection" section.

P/S: this is just a work around if your query is not very large. If you want better performance, let's try mongoid-pagination gem, custom will_pagination gem or another pagination gem which supported Mongoid like kaminari.