Will paginate in Array - Rails

1. Install gem:

gem ''will_paginate"

2. perform a paginated query:

@groups = Group.paginate(:page => params[:page])

OR

Use an explicit "per page" limit:

Group.paginate(:page => params[:page], :per_page => 30)

3. Render page links in the view:

<%= will_paginate @groups %>

4. Use will_paginate for Array

Create file config/initializers/will_paginate_array_fix.rb

Add this line

require 'will_paginate/array'

Then you can use on arrays

groups.paginate(:page => x, :per_page => y)