无法让 UJS 在 Rails 3.1 中工作
好的,我在 Rails 应用程序中使用 ajax 已经有一段时间了。不知何故,在我的第一个 Rails 3.1 应用程序中,我无法让基础知识发挥作用。
# application.js
//= require jquery
//= require jquery_ujs
# the form
= form_for @signup, :url => '/signup', :remote => true do |f|
= f.text_field :email, :class => 'email', :size => 26
= f.submit 'Notify me'
# the controller
def signup # route.rb has 'match '/signup' => 'controller#signup'
respond_to do |format|
format.js
end
end
# view: signup.js.erb
alert('wtf?');
现在,据我所知,提交此表单应该会触发警报框。事实并非如此。表单提交确实会通过控制器操作,该操作会渲染模板:
Rendered teaser_pages/signup.js.erb (0.1ms)
Completed 200 OK in 8ms (Views: 7.2ms | ActiveRecord: 0.0ms)
仅不会触发任何 js。
UJS 助手已加载并正常运行(我认为),因为如果我这样做..
link_to 'click me', '#', :confirm => 'confirmation box!'
..它将按预期触发确认框。
我可能会错过什么?任何方向看将不胜感激。
谢谢你, Erwin
更新:
所以看来 Rails 证明了标头中的内容类型错误,提供了 text/html
而不是 text/javascript
。经过一些测试后,甚至:
render :js => "alert('AHAHAHAHA');", :content_type => 'text/javascript'
仍会呈现内容类型为 text/html
的标头
当我使用相同版本的 jquery-rails
运行新应用程序时,它可以工作。在此应用程序中,它不..
我应该在哪里寻找?
Ok, i've been using ajax in my rails apps for quite some time. Somehow, in my first Rails 3.1 app I can't get the basics to work..
# application.js
//= require jquery
//= require jquery_ujs
# the form
= form_for @signup, :url => '/signup', :remote => true do |f|
= f.text_field :email, :class => 'email', :size => 26
= f.submit 'Notify me'
# the controller
def signup # route.rb has 'match '/signup' => 'controller#signup'
respond_to do |format|
format.js
end
end
# view: signup.js.erb
alert('wtf?');
Now, from what I can tell, submitting this form should trigger the alert box. It doesn't. The form submission does go through to the controller action, which does render the template:
Rendered teaser_pages/signup.js.erb (0.1ms)
Completed 200 OK in 8ms (Views: 7.2ms | ActiveRecord: 0.0ms)
Only no js is triggered.
The UJS helpers are loaded and functioning though (I think) because if i do..
link_to 'click me', '#', :confirm => 'confirmation box!'
..it will trigger a confirmation box as expected.
What could I be missing? Any direction to look would be appreciated.
Thank you,
Erwin
UPDATE:
So it seems rails is proving the wrong content-type in the header, providing text/html
instead of text/javascript
. After some testing even:
render :js => "alert('AHAHAHAHA');", :content_type => 'text/javascript'
will still render a header with content-type text/html
When I run a fresh application with the same version of jquery-rails
it works. In this application it doesn't..
Where should I be looking?
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我遇到了同样的问题。我也使用相同的 gemfile 设置了一个测试应用程序,并得到了与您描述的相同的结果:它在新创建的应用程序中工作,但在旧应用程序中不起作用。目前,我在实际渲染调用之前手动设置内容类型标头。
另一方面,这并没有改变正确传递的 content_type:
希望这暂时有帮助。
您在此期间得到真正的解决方案了吗?
更新:
至少我发现了我真正的问题。我有一个 before_filter 强制 content_type 为 text/html ,这是我前一段时间为测试而添加的,但忘记停用:
I got the same problem. I set up a test app with same gemfile as well and got the same result as you described: it works in the newly created app but not in the old one. For the time being I set the content type header by hand before the actual render call.
This on the other hand did not change the content_type delivered correctly:
Hope this helps for the moment.
Did you get the real solution in the meantime?
UPDATE:
At least I found my real problem. I have a before_filter forcing the content_type to text/html which I added for testing some time ago and forgot to deactivate: