最开始，我用 ajax 发送了一个 delete 请求，遇到了这个问题
在 destroy action 中 redirect_to 到一个 index 页面，rails 用了 delete 请求而不是 get
google 了一下，说用 status: 303
带上 303 之后，看 server 确实是用的 get, 也不报错了，该 render 的都 render 了，可就是不刷新页面
请问这是为什么鸭
上代码和日志：
edit.js.erb
$('#confirm_button').click(function() {
var url = $('.js-submit-delete-section').data('url')
$.ajax({
method: 'delete',
url: url,
})
})
现在 workable 的代码
def destroy
@section.destroy
...
flash[:notice] = "删除成功"
render js: "window.location = '#{course_sections_path(@course)}'"
end
log
Started DELETE "/courses/5b582404421aa97728ee4e2f/sections/5b681976421aa9c55b549830" for 127.0.0.1 at 2018-10-25 20:49:56 +0800
Processing by Courses::SectionsController#destroy as */*
....
Started GET "/courses/5b582404421aa97728ee4e2f/sections" for 127.0.0.1 at 2018-10-25 20:49:56 +0800
Processing by Courses::SectionsController#index as HTML
最开始有问题的代码
controller
def destroy
@section.destroy
if params[:destroy_content] && @section.content.destroy
flash[:success] = "成功解绑并删除"
end
if params[:unbind_course_from_content] && @section.content.update(course: nil)
flash[:success] = "成功解绑并转换为直播"
end
flash[:notice] = "删除成功"
redirect_to action: :index
end
log
Started DELETE "/courses/5b582404421aa97728ee4e2f/sections/5b681970421aa9c55b54982e" for 127.0.0.1 at 2018-10-25 20:51:16 +0800
Processing by Courses::SectionsController#destroy as */*
Parameters: {"course_id"=>"5b582404421aa97728ee4e2f", "id"=>"5b681970421aa9c55b54982e"}
MONGODB | localhost:27017 | MagNet_development.find | STARTED | {"find"=>"users", "filter"=>{"_id"=>BSON::ObjectId('56a8b4c9feec620985000000')}, "limit"=>1, "
MONGODB | localhost:27017 | MagNet_development.update | SUCCEEDED | 0.0023810000000000003s
Redirected to http://localhost:3000/courses/5b582404421aa97728ee4e2f/sections
Completed 302 Found in 78ms
Started DELETE "/courses/5b582404421aa97728ee4e2f/sections" for 127.0.0.1 at 2018-10-25 20:51:16 +0800
ActionController::RoutingError (No route matches [DELETE] "/courses/5b582404421aa97728ee4e2f/sections"):
actionpack (4.2.5) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
.....
尝试用 303 解决后，但是页面不刷新
controller
def destroy
@section.destroy
if params[:destroy_content] && @section.content.destroy
flash[:success] = "成功解绑并删除"
end
if params[:unbind_course_from_content] && @section.content.update(course: nil)
flash[:success] = "成功解绑并转换为直播"
end
flash[:notice] = "删除成功"
redirect_to action: :index, status: 303
end
log
Started DELETE "/courses/5b582404421aa97728ee4e2f/sections/5bd1bc8aa33259a591f0a71d" for 127.0.0.1 at 2018-10-25 20:52:33 +0800
Processing by Courses::SectionsController#destroy as */*
Parameters: {"course_id"=>"5b582404421aa97728ee4e2f", "id"=>"5bd1bc8aa33259a591f0a71d"}
MONGODB | localhost:27017 | MagNet_development.find | STARTED | {"find"=>"users", "filter"=>{"_id"=>BSON::ObjectId('56a8b4c9feec620985000000')}, "limit"=>1,
MONGODB | localhost:27017 | MagNet_development.update | SUCCEEDED | 0.0015010000000000002s
Redirected to http://localhost:3000/courses/5b582404421aa97728ee4e2f/sections
Completed 303 See Other in 45ms
Started GET "/courses/5b582404421aa97728ee4e2f/sections" for 127.0.0.1 at 2018-10-25 20:52:33 +0800
Processing by Courses::SectionsController#index as */*
Parameters: {"course_id"=>"5b582404421aa97728ee4e2f"}
MONGODB | localhost:27017 | MagNet_development.find | STARTED | {"find"=>"users", "filter"=>{"_id"=>BSON::ObjectId('56a8b4c9feec620985000000')}, "limit"=>1,
Rendered layouts/admin/_main_sidebar.html.slim (100.1ms)
Rendered layouts/admin/_flash_messages.html.slim (4.7ms)
Rendered layouts/admin/_main_footer.html.slim (3.0ms)
Completed 200 OK in 1147ms (Views: 1120.4ms)
无引用文章
对
zhuoerri
回复
zhuoerri
回复
谢谢，我也看到重新定向那块了，https://stackoverflow.com/questions/46778581/redirection-to-a-get-after-a-put-in-rails-status-303-not-working，我研究下。
我以为我设置了 format，之后就跟 ajax 没关了
redirect_to xx_path(@course, format: :html), status: :see_other
对
zouyu
回复
zouyu
回复
hmm, 没太明白的你意思，有相关文章推荐下吗？
确实是 route 到 destroy action 了，只是在 destroy action 中 redirect_to :index 时出现的问题
pinewong
#14
2018年10月25日
重定向是浏览器才有权利做的事情，服务端只能作出指示。
如果是普通请求，浏览器收到服务端重定向 (3xx 状态码) 的指示后，会自动再向指示的地址发送一个请求，达到页面刷新。
如果变成了 AJAX 请求，浏览器是不会响应重定向状态码指示的，这时候可以用 #3 上面说的方法，渲染一段 JS 代码给浏览器，浏览器收到后会执行实现页面刷新
hiveer
#18
2018年10月25日
你这个问题涉及的知识，值得分享下： 用 303 的原因是，默认的 302 或者 301（永久跳转）是不会改变请求方法的，也就是你在发送 DELETE 请求的时候，如果是 DELETE，那么跳转的时候还是会用 DELETE，但是如果你想跳的是个页面那么明显需要用 GET。这时候就需要用 303，303 就是为此而生。refer： https://zh.wikipedia.org/wiki/HTTP_303
再说没刷新的问题：
前端发送的请求有两种方式，浏览器发送或者 JS 发送。是浏览器发送的话，默认是会在新页面给你渲染的，所以肯定会刷新，即便你没有 redirect，只是 render。
如果是 JS 发送的话，因为是异步的，所以是不会自己去刷新页面的，就需要你自己去刷新，通过更改 window.location.href
msg7086
#22
2018年10月26日
AJAX 请求不会导致影响页面本身的。你的 AJAX 应该返回处理的结果（成功或失败），返回一个 JSON 的话就是比如说 {"error": 0, "redirect": "/"} 这样，然后你自己再写一个回调函数处理结果，比如根据 error 和 redirect 的值，执行对应的跳转代码。
Awlter1
#25
2019年01月16日
这个问题最近又出现了，貌似
format.js { render js: "window.location = '#{course_sections_path(@course)}'" }
不管用了
ActionController::RoutingError (No route matches [DELETE] "/courses/5c122c196799f367fb742aa8/sections"):
actionpack (4.2.5) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
lograge (0.7.1) lib/lograge/rails_ext/rack/logger.rb:15:in `call_app'
railties (4.2.5) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.5) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.5) lib/rails/rack/logger.rb:20:in `call'
quiet_assets (1.1.0) lib/quiet_assets.rb:27:in `call_with_quiet_assets'
request_store (1.3.2) lib/request_store/middleware.rb:9:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.10) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.10) lib/rack/runtime.rb:18:in `call'
activesupport (4.2.5) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.10) lib/rack/lock.rb:17:in `call'
actionpack (4.2.5) lib/action_dispatch/middleware/static.rb:116:in `call'
rack (1.6.10) lib/rack/sendfile.rb:113:in `call'
sentry-raven (2.7.3) lib/raven/integrations/rack.rb:51:in `call'
railties (4.2.5) lib/rails/engine.rb:518:in `call'
railties (4.2.5) lib/rails/application.rb:165:in `call'
rack (1.6.10) lib/rack/content_length.rb:15:in `call'
thin (1.7.2) lib/thin/connection.rb:86:in `block in pre_process'
thin (1.7.2) lib/thin/connection.rb:84:in `catch'
thin (1.7.2) lib/thin/connection.rb:84:in `pre_process'
thin (1.7.2) lib/thin/connection.rb:53:in `process'
thin (1.7.2) lib/thin/connection.rb:39:in `receive_data'
eventmachine (1.2.5) lib/eventmachine.rb:194:in `run_machine'
eventmachine (1.2.5) lib/eventmachine.rb:194:in `run'
thin (1.7.2) lib/thin/backends/base.rb:73:in `start'
thin (1.7.2) lib/thin/server.rb:162:in `start'
rack (1.6.10) lib/rack/handler/thin.rb:19:in `run'
rack (1.6.10) lib/rack/server.rb:287:in `start'
railties (4.2.5) lib/rails/commands/server.rb:80:in `start'
railties (4.2.5) lib/rails/commands/commands_tasks.rb:80:in `block in server'
railties (4.2.5) lib/rails/commands/commands_tasks.rb:75:in `tap'
railties (4.2.5) lib/rails/commands/commands_tasks.rb:75:in `server'
railties (4.2.5) lib/rails/commands/commands_tasks.rb:39:in `run_command!'
railties (4.2.5) lib/rails/commands.rb:17:in `<top (required)>'
bin/rails:9:in `require'
bin/rails:9:in `<top (required)>'
spring (2.0.2) lib/spring/client/rails.rb:28:in `load'
spring (2.0.2) lib/spring/client/rails.rb:28:in `call'
spring (2.0.2) lib/spring/client/command.rb:7:in `call'
spring (2.0.2) lib/spring/client.rb:30:in `run'
spring (2.0.2) bin/spring:49:in `<top (required)>'
spring (2.0.2) lib/spring/binstub.rb:31:in `load'
spring (2.0.2) lib/spring/binstub.rb:31:in `<top (required)>'
bin/spring:13:in `require'
bin/spring:13:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'