Suave’s Blog

使用 acts_as_taggable_on_steroids 之后经常找有某个 tag 的 item：

@items = Item.find_tagged_with(”tag”)

找到很多需要分页显示，于是顺利成章的在后面加上：

@items = Item.find_tagged_with(”tag”).paginate :page => paramsp[:page] || 1, :per_page => 20

发现无效！原因是 find_tagged_with 返回的是 Array，will_paginate 强大的分页功能瞬时歇菜。

于是乎整合一下两者：

module ActiveRecord
module Acts #:nodoc:
module Taggable #:nodoc:
module SingletonMethods

def count_tagged_with(*args)
options = find_options_for_find_tagged_with(*args)
options.blank? ? 0 : count(”#{table_name}.id”, options.merge(:select => nil, :distinct => true))
end

def _paginate_tagged_with(tags, options = {})
page, per_page = wp_parse_options!(options)
offset = (page.to_i - 1) * per_page
count = count_tagged_with(tags, options)
options.merge!(:offset => offset, :limit => per_page.to_i)
items = find_tagged_with(tags, options)
returning WillPaginate::Collection.new(page, per_page, count) do |p|
p.replace items
end
end

end
end
end
end

之后调用

@items = Item.paginate_tagged_with tag, :page => paramsp[:page] || 1, :per_page => 20

Tags: acts_as_taggable_on_steroids, will_paginate

This entry was posted on Friday, May 8th, 2009 at 9:03 am and is filed under Ruby and Rails. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.