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This commit is contained in:
Akira Matsuda 2011-02-17 01:22:27 +09:00
parent 728666c54c
commit 753464fce8
1 changed files with 10 additions and 4 deletions
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14
lib/kaminari/active_record.rb
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@ -4,7 +4,7 @@ module Kaminari
DEFAULT_PER_PAGE = 25
included do
def self.inherited(kls)
def self.inherited(kls) #:nodoc:
# TERRIBLE HORRIBLE NO GOOD VERY BAD HACK: inheritable_attributes is not yet set here on AR 3.0
unless kls.default_scoping
new_inheritable_attributes = Hash[inheritable_attributes.map do |key, value|
@ -14,11 +14,13 @@ module Kaminari
end
kls.class_eval do
# page(5)
# Fetch the values at the specified page number
# Model.page(5)
scope :page, lambda {|num|
limit(default_per_page).offset(default_per_page * ([num.to_i, 1].max - 1))
} do
# page(3).per(10)
# Specify the <tt>per_page</tt> value for the preceding <tt>page</tt> scope
# Model.page(3).per(10)
def per(num)
if (n = num.to_i) <= 0
self
@ -27,16 +29,18 @@ module Kaminari
end
end
# Total number of pages
def num_pages
(except(:offset, :limit).count.to_f / limit_value).ceil
end
# Current page number
def current_page
(offset_value / limit_value) + 1
end
end
# overrides the default per_page value per model
# Overrides the default per_page value per model
# class Article < ActiveRecord::Base
# paginates_per 10
# end
@ -44,6 +48,8 @@ module Kaminari
@_default_per_page = val
end
# This model's default per_page value
# returns 25 unless explicitly overridden via <tt>paginates_per</tt>
def self.default_per_page
@_default_per_page || Kaminari::ActiveRecord::DEFAULT_PER_PAGE
end