如何升级：升级=＆GT;“div_id'从轨道2 remote_form_for的选项，Rails 3的？ [英] How to upgrade the :update=>'div_id' option of remote_form_for from Rails 2 to Rails 3?
问题描述
我无法弄清楚如何升级从Rails的2本code到Rails 3的：
I can't figure out how to upgrade this code from Rails 2 to Rails 3:
<% remote_form_for(item, :update => 'div_id') do |f| %>
...
我尝试这样做：
I tried this:
<%= form_for :item, :remote => true, :url => { :controller => "items", :action => "create" }, :update => 'div_id' do |f| %>
...
它创建新的项目，但失败的更新内容在＆LT; DIV ID =div_id＆GT;＆LT; / DIV＆GT; 标签。看来Rails 3中不再支持：更新的form_for 选项远程。任何建议？
It creates the new item but it fails in updating the content within <div id="div_id"></div> tags. It seems Rails 3 no longer supports the ":update" option for a remote form_for. Any suggestion?
推荐答案
您可以使用RJS，但是这被德precated太（有很好的理由）。简化的，最佳实践的方法来处理这个Rails中3+如下（假设jQuery的）：
You could use RJS, but that's being deprecated too (and for good reason). The simplified, best-practices way to handle this in Rails 3+ is as follows (assuming jQuery):
# your_view.html.erb
<div id="receiver-id"></div>
<%= form_for :some_model, :remote => true, :id => 'form-id' do |f| %>
...
<% end %>
# application.js (or any other .js loaded on the page)
$(function(){
$('#form-id').bind('ajax:success', function(xhr, data, status){
$('#receiver-id').html(data);
});
});
在 AJAX：成功挂钩被称为jQuery的-UJS（又名jQuery的护栏，又名Rails的UJS）远程链接/表单处理程序。 看到自己。有很多其他的回调/可钩子供您使用了。如果你想使这个更加灵活，你可以使用生活，而不是绑定，并绑定到一个类，决定了那里的输出中去（如边栏），然后所有的远程链接/表格与补充工具栏类将有自己的HTML响应去 DIV＃侧边栏。
The ajax:success hook gets called by the jquery-ujs (aka jquery-rails, aka rails-ujs) remote link/form handler. See for yourself. There are lots of other callbacks/hooks available for you to use, too. If you wanted to make this even more flexible, you could use live instead of bind, and bind to a class that dictates where the ouput goes (e.g. "sidebar") and then all remote links/forms with the sidebar class would have their HTML response go to div#sidebar.
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