cursor-paginate 
Cursor based pagination library for Rails.
Usage
# Get the newest 100 posts where id <= cursor
# If cursor is nil, get the newest 100 posts.
@posts = Post.before(id: params[:cursor]).limit(100)
# Get the oldest 100 posts where id >= cursor
# If cursor is nil, get the oldest 100 posts.
@posts = Post.after(id: params[:cursor]).limit(100)
# Also you can use other colum as cursor instead of id
@posts = Post.before(created_at: params[:cursor]).limit(100)
@posts.has_next? # => true/false
@posts.next_cursor # => value of cursor column/nilNote that if multiple data have the same cursor value (like created_at at the same time), they appear in duplicate.
In the template
If you use Bootstrap 4.x, pagers are expressed as below:
<nav aria-label="pagination">
<ul class="pagination">
<% if @posts.has_next? %>
<li class="page-item">
<%= link_to "Next >", { controller: :posts, action: :index, cursor: @posts.next_cursor }, class: "page-link" %>
</li>
<% else %>
<li class="page-item disabled"><a href="#" class="page-link">Next ></a></li>
<% end %>
</ul>
</nav>Installation
Add this line to your application's Gemfile:
gem 'cursor-paginate'Contributing
Feel free to send PR.
License
The gem is available as open source under the terms of the MIT License.