Class: Pageboy::PageTurner::Array

Inherits:
Base
  • Object
show all
Defined in:
lib/pageboy/page_turner/array.rb

Instance Attribute Summary

Attributes inherited from Base

#resource

Instance Method Summary collapse

Methods inherited from Base

#first, #first_page_id, #initialize, #with_merged_options

Constructor Details

This class inherits a constructor from Pageboy::PageTurner::Base

Instance Method Details

#page(page_id, opts = {}) ⇒ Object 



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# File 'lib/pageboy/page_turner/array.rb', line 7

def page(page_id, opts={})
  with_merged_options(opts) do |o|
    per_page = Integer(o[:per_page])
    i = Integer(page_id)
    max_page = (resource.size.to_f / per_page).ceil
    prev_page_id = i - 1 < 1 ? nil : i - 1
    next_page_id = i + 1 > max_page ? nil : i + 1

    first_item_index = (i-1) * per_page
    last_item_index = i * per_page - 1
    slice = resource[first_item_index..last_item_index]
    Page.new(self, slice, prev_page_id, next_page_id)
  end
end