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Contents
require 'active_support/core_ext/module'
module Kaminari
# Kind of Array that can paginate
class PaginatableArray < Array
include Kaminari::ConfigurationMethods::ClassMethods
attr_internal_accessor :limit_value, :offset_value
# ==== Options
# * <tt>:limit</tt> - limit
# * <tt>:offset</tt> - offset
# * <tt>:total_count</tt> - total_count
def initialize(original_array = [], options = {})
@_original_array, @_limit_value, @_offset_value, @_total_count = original_array, (options[:limit] || default_per_page).to_i, options[:offset].to_i, options[:total_count]
if options[:limit] && options[:offset]
class << self
include Kaminari::PageScopeMethods
end
end
if options[:total_count]
super original_array
else
super(original_array[@_offset_value, @_limit_value] || [])
end
end
# items at the specified "page"
class_eval <<-RUBY, __FILE__, __LINE__ + 1
def #{Kaminari.config.page_method_name}(num = 1)
offset(limit_value * ([num.to_i, 1].max - 1))
end
RUBY
# returns another chunk of the original array
def limit(num)
self.class.new @_original_array, :limit => num, :offset => @_offset_value, :total_count => @_total_count
end
# total item numbers of the original array
def total_count
@_total_count || @_original_array.count
end
# returns another chunk of the original array
def offset(num)
self.class.new @_original_array, :limit => @_limit_value, :offset => num, :total_count => @_total_count
end
end
# Wrap an Array object to make it paginatable
# ==== Options
# * <tt>:limit</tt> - limit
# * <tt>:offset</tt> - offset
# * <tt>:total_count</tt> - total_count
def self.paginate_array(array, options = {})
PaginatableArray.new array, options
end
end
Version data entries
9 entries across 9 versions & 2 rubygems