Pagination

The following instructions show how to add pagination in a cheatsheet-like summary.

We’ll use a fork of tongueroo/kaminari. There are only a few changes to kaminari required add Jets support. Here’s the diff.

Project

Create new project

jets new demo
jets generate scaffold post title:string body:text published:boolean

Create a seeds.rb file to create a lot of records.

db/seeds.rb

50.times do |i|
  n = i + 1
  Post.find_or_create_by(title: "Title #{n}", body: "Body #{n}")
end

Seed the data

jets db:seed

This is enough to test pagination.

Add to your Gemfile

Gemfile

gem 'kaminari', github: 'tongueroo/kaminari', branch: 'master'

You can generate a starter kaminari_config.rb

❯ bundle exec jets generate kaminari:config
    create  config/initializers/kaminari_config.rb

app/controllers/posts_controller.rb

class PostsController < ApplicationController
  def index
    @posts = Post.order(:title).page params[:page]
  end

app/views/posts/index.html.erb

<%= paginate @posts %>

This would output several pagination links such as:

« First ‹ Prev ... 2 3 4 5 6 7 8 9 10 ... Next › Last »

You should be able to go through the pages with links like so:

For more details original docs: tongueroo/kaminari