Ruby-on-rails Rails 3：如何在 Ajax 调用中“redirect_to”？
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Rails 3: How to "redirect_to" in Ajax call?
提问by Misha Moroshko
The following attempt_loginmethod is called using Ajax after a login form is submitted.
attempt_login提交登录表单后，使用 Ajax 调用以下方法。
class AccessController < ApplicationController
[...]
def attempt_login
authorized_user = User.authenticate(params[:username], params[:password])
if authorized_user
session[:user_id] = authorized_user.id
session[:username] = authorized_user.username
flash[:notice] = "Hello #{authorized_user.name}."
redirect_to(:controller => 'jobs', :action => 'index')
else
[...]
end
end
end
The problem is that redirect_todoesn't work.
问题是这redirect_to行不通。
How would you solve this ?
你会如何解决这个问题？
回答by Misha Moroshko
Finally, I just replaced
最后，我只是更换
redirect_to(:controller => 'jobs', :action => 'index')
with this:
有了这个：
render :js => "window.location = '/jobs/index'"
and it works fine!
它工作正常！
回答by nathanvda
There is very easy way to keep the flash for the next request. In your controller do something like
有一种非常简单的方法可以为下一个请求保留闪存。在你的控制器中做类似的事情
flash[:notice] = 'Your work was awesome! A unicorn is born!'
flash.keep(:notice)
render js: "window.location = '#{root_path}'"
The flash.keepwill make sure the flash is kept for the next request.
So when the root_pathis rendered, it will show the given flash message. Rails is awesome :)
在flash.keep将确保闪光灯不停地为下一个请求。所以当root_path被渲染时，它会显示给定的 flash 消息。Rails 很棒:)
回答by Mike
I think this is slightly nicer:
我认为这稍微好一点：
render js: "window.location.pathname='#{jobs_path}'"
render js: "window.location.pathname='#{jobs_path}'"
回答by Priit
In one of my apps, i use JSON to carry on the redirect and flash message data. It would look something like this:
在我的一个应用程序中，我使用 JSON 来进行重定向和闪现消息数据。它看起来像这样：
class AccessController < ApplicationController
...
def attempt_login
...
if authorized_user
if request.xhr?
render :json => {
:location => url_for(:controller => 'jobs', :action => 'index'),
:flash => {:notice => "Hello #{authorized_user.name}."}
}
else
redirect_to(:controller => 'jobs', :action => 'index')
end
else
# Render login screen with 422 error code
render :login, :status => :unprocessable_entity
end
end
end
And simple jQuery example would be:
简单的 jQuery 示例是：
$.ajax({
...
type: 'json',
success: functon(data) {
data = $.parseJSON(data);
if (data.location) {
window.location.href = data.location;
}
if (data.flash && data.flash.notice) {
// Maybe display flash message, etc.
}
},
error: function() {
// If login fails, sending 422 error code sends you here.
}
})
回答by Yarin
Combining the best of all answers:
结合所有答案中最好的：
...
if request.xhr?
flash[:notice] = "Hello #{authorized_user.name}."
flash.keep(:notice) # Keep flash notice around for the redirect.
render :js => "window.location = #{jobs_path.to_json}"
else
...
回答by OlegZ
def redirect_to(options = {}, response_status = {})
super(options, response_status)
if request.xhr?
# empty to prevent render duplication exception
self.status = nil
self.response_body = nil
path = location
self.location = nil
render :js => "window.location = #{path.to_json}"
end
end
回答by Macario
I didn't want to modify my controller actions so I came up with this hack:
我不想修改我的控制器动作，所以我想出了这个黑客：
class ApplicationController < ActionController::Base
def redirect_to options = {}, response_status = {}
super
if request.xhr?
self.status = 200
self.response_body = "<html><body><script>window.location.replace('#{location}')</script></body></html>"
end
end
end
