Rails 3 Collection 选择 onchange 提交

发布于 2025-01-07 02:38:51 字数 551 浏览 4 评论 0原文

当集合选择的值发生更改时，我尝试提交远程表单。我已经尝试过：

"<%= form_tag ( { :controller => :images, :action => :index, :method => "post" }) do %>"

"<%= collection_select(:admin_image, :category_id, Admin::Category.all, :id, :name, {:onchange => remote_function(:url => {:controller => "/admin/admin_home", :action => "index"}, :with => "'category_id='+value")}) %>"

"<% end %>"

但我知道remote_function不再出现在rails 3中。所以我也尝试过：

{:onchange => "submit();"

但是什么也没有发生。

原文

I'm trying to submit a remote form when the value of a Collection Select changes. I've tried:

"<%= form_tag ( { :controller => :images, :action => :index, :method => "post" }) do %>"

"<%= collection_select(:admin_image, :category_id, Admin::Category.all, :id, :name, {:onchange => remote_function(:url => {:controller => "/admin/admin_home", :action => "index"}, :with => "'category_id='+value")}) %>"

"<% end %>"

But I understand that remote_function is no longer in rails 3. So I've also tried:

{:onchange => "submit();"

But nothing happens.

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痕至 2025-01-14 02:38:51

为此，您需要使用 Javacsript。如果您使用 jQuery，那就很简单。您需要侦听“更改”事件并在其触发时提交表单。我使用这个通用函数，然后使用“submit_on_change”类标记我想要在更改时自动提交的表单：

$("form.submit_on_change").each(function(idx,form){
  $(form).find("select,input").each(function(idx,element){
    $(element).change(function(){
      $(form).submit();
      return false;
    });
  });
});

确保在 dom 加载后运行此函数，例如在文档准备好时。

You'll need to use Javacsript for this. If you're using jQuery, it's simple. You'll want to listen for the 'change' event and submit the form when it fires. I use this generic function and then tag forms I want to auto-submit on change with the "submit_on_change" class:

$("form.submit_on_change").each(function(idx,form){
  $(form).find("select,input").each(function(idx,element){
    $(element).change(function(){
      $(form).submit();
      return false;
    });
  });
});

Make sure you run this after the dom loads, for example on document ready.

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