Why does $request->all() return an empty array for PATCH and PUT requests with form-data sent from Postman in a Laravel RESTFUL application?

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HTTP PATCH and PUT Requests Encountering Issues with Form-Data Sent from Postman

In a Laravel RESTFUL application, users face challenges when attempting to utilize PATCH or PUT requests with form-data sent via Postman. Specifically, the $request->all() method returns an empty array, preventing the parameters from reaching the backend.

Understanding the Problem

For POST requests, $request->all() functions normally when form-data is used. However, for PATCH and PUT, the same method fails to retrieve the parameters transmitted from Postman. This behavior contrasts with x-www-form-urlencoded, which allows $request->all() to access parameters for all HTTP methods (PATCH, PUT, POST).

Addressing the Issue

The recommended workaround is to employ POST for updating models, but this solution deviates from standard RESTFUL API practices. A more suitable approach requires adjustments within Postman:

1. Set Request Type to HTTP POST: Configure the Postman request as an HTTP POST method.
2. Include PUT Operation: Within the request, insert a hidden field named _method with a value of "PUT." This action emulates a PUT request while using the POST method.

Example:

Postman Request:

POST /testimonials/{testimonial}

x-www-form-urlencoded

_method=PUT

Controller Method:

<code class="php">public function update(Testimonial $testimonial, Request $request)
{
    $testimonial->update($request->all());
}</code>

This approach allows for the successful transfer of parameters from Postman to the backend, resolving the PATCH and PUT issues. However, it's important to note that this method deviates slightly from RESTFUL principles, using POST for both POST and PUT operations.

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