Rails2.2.2中使用will_paginate

 

分页功能的实现:

准备: gem sources -a http://gems.github.com (Add GitHub to your gem sources, once per machine)

安装: gem install mislav-will_paginate

配置: 在项目environment.rb文件的最后一行添加 require 'will_paginate' (必须在Rails::Initializer之后加入will_paginate，也就是等Rails框架加载完之后再加载will_paginate)

使用:

1. controller中: @posts = Post.paginate :page => params[:page]||1, :per_page => 2, :conditions => ['title like ?', "test%"], :order => 'updated_at desc'

2. view中: <%=will_paginate @posts, :prev_label => '上一页', :next_label => '下一页'%>

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补充说明:

以上方法在development模式下使用时有效，今天在production环境中使用时遇到问题，启动时就报错: uninitialized constant CouponController::WillPaginate

最终在项目中将will_paginate安装为插件，并去掉environment.rb中的require 'will_paginate'，问题解决，开发和生产模式下都可以很好的用，命令如下:

ruby script/plugin install git://github.com/mislav/will_paginate.git