PATCH 和 PUT 请求不适用于表单数据

I am using Laravel to create a RESTFUL application and I test the application with Postman. Currently, there is an issue for PATCH or PUT if the data sent from Postman with form-data.

// Parameter `{testimonial}` will be sent to backend.
Route::post  ('testimonials/{testimonial}', 'TestimonialController@update');

// Parameter `{testimonial}` will not be sent to backend (`$request->all()` will be empty) if sent from Postman with form-data.
Route::patch ('testimonials/{testimonial}', 'TestimonialController@update');
Route::put   ('testimonials/{testimonial}', 'TestimonialController@update');

• 使用表单数据，$request->all() 可以用于 POST.
• 使用 x-www-form-urlencoded，$request->all() 对 PATCH、PUT 和POST.
• 但是，如果我从 Postman 发送带有表单数据的 PUT 和 PATCH，则 $request->all() 将为空(参数不会发送到后端).
• Using form-data, $request->all() will be okay for POST.
• Using x-www-form-urlencoded, $request->all() will be okay for PATCH, PUT, and POST.
• However, if I am sending PUT and PATCH with form-data from Postman, the $request->all() will be empty (the parameters will not be sent to backend).

目前的解决方案是使用 POST 来更新模型.我想知道为什么 PATCH 和 PUT 在使用 Postman 的表单数据发送时不起作用.

Right now the solution is to use POST for updating a model. I want to know why PATCH and PUT is not working when sent with form-data from Postman.

推荐答案

这是一个已知问题，解决方法建议如下 Github comment 是在发送 PATCH/PUT 请求时，您应该执行以下操作:

This is a known issue and the workaround suggestion as per the following Github comment is that when sending a PATCH / PUT requests you should do the following:

您应该发送 POST 并将 _method 设置为 PUT(与发送表单相同)以使您的文件可见

You should send POST and set _method to PUT (same as sending forms) to make your files visible

所以基本上你发送一个带有参数的 POST 请求，该参数设置实际方法，Laravel 似乎明白这一点.

So essentially you send a POST request with a parameter which sets the actual method and Laravel seems to understand that.

根据文档:

由于 HTML 表单无法发出 PUT、PATCH 或 DELETE 请求，您需要添加一个隐藏的 _method 字段来欺骗这些 HTTP 动词.@method Blade 指令可以为你创建这个字段:

Since HTML forms can't make PUT, PATCH, or DELETE requests, you will need to add a hidden _method field to spoof these HTTP verbs. The @method Blade directive can create this field for you:

<form action="/foo/bar" method="POST">
    @method('PUT')

    ...
</form> 

或者，您可以使用 method_field 执行上述操作的辅助函数:

Alternatively, you can use the method_field helper function to do the above:

method_field 函数生成一个 HTML 隐藏输入字段，其中包含表单的 HTTP 动词的欺骗值.例如，使用 Blade 语法:

The method_field function generates an HTML hidden input field containing the spoofed value of the form's HTTP verb. For example, using Blade syntax:

<form method="POST">
    {{ method_field('PUT') }}
</form>