Module: WillPaginate::CollectionMethods

Included in:
ActiveRecord::RelationMethods, Collection, DataMapper::CollectionMethods, SequelMethods
Defined in:
lib/will_paginate/collection.rb

Overview

Any will_paginate-compatible collection should have these methods:

current_page, per_page, offset, total_entries, total_pages

It can also define some of these optional methods:

out_of_bounds?, previous_page, next_page

This module provides few of these methods.

Instance Method Summary collapse

Instance Method Details

#next_page ⇒ Object

current_page + 1 or nil if there is no next page



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# File 'lib/will_paginate/collection.rb', line 25

def next_page
  current_page < total_pages ? (current_page + 1) : nil
end

#out_of_bounds? ⇒ Boolean

Helper method that is true when someone tries to fetch a page with a larger number than the last page. Can be used in combination with flashes and redirecting.

Returns:

  • (Boolean) 


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# File 'lib/will_paginate/collection.rb', line 32

def out_of_bounds?
  current_page > total_pages
end

#previous_page ⇒ Object

current_page - 1 or nil if there is no previous page



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# File 'lib/will_paginate/collection.rb', line 20

def previous_page
  current_page > 1 ? (current_page - 1) : nil
end

#total_pages ⇒ Object 



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# File 'lib/will_paginate/collection.rb', line 15

def total_pages
  total_entries.zero? ? 1 : (total_entries / per_page.to_f).ceil
end