Resize and replace image in Laravel request - php

Question

I need to be able to resize an image and put the resized version back into the $request, does anyone know if thats possible?
Basically I have inherited some code that contains potentially 100+ separate file upload sections, and it is now my task to resize all images on the site if they are above a certain size.
So I now need to intercept ALL image uploads on the application, detect if they are above a set size and if they are, resize them.
All code i've found online only shows how to resize the image then save the resized version straight away, but I need to be able to resize the image then put it BACK into the $request to be processed by the controller.
The images come in the form of arrays of images from separate sections, so i need to be able to loop the entire request, check if any of the inputs contain/are files, then if they are check the sizes of them. If they're above a set size, then resize them and replace them in the $request so that when the request continues, the controller can process the image as normal but it will be processing the new resized version.
I have tried resizing images and then using laravels $request->merge() method but I cannot get it to work.
At the moment I am resizing all images in a middleware, like this
public function handle($request, Closure $next)
{
foreach($request->files as $fileKey => $file){
//Create a new array to add the newly sized images in
$newFileArray = [];
//Get each of the files that are being uploaded in the request, if there are no files this will just be ignored.
foreach ($file as $key => $f) {
if(!is_null($f)){
$image = Image::make($f);
if($image->height() > 500 || $image->width() > 500){
$image->resize(500, null, function ($constraint) {
$constraint->aspectRatio();
});
}
$newFileArray[$key] = $image;
} else {
$newFileArray[$key] = null;
}
}
$request->merge([
$fileKey => $newFileArray
]);
};
return $next($request);
}
I just can't get it to work!
Is this possible?
EDIT
After a great suggestion in the comments of one of the answers below, I've achieved this by editing the temp image file directly so I don't have to mess with the request, this is how i've done it.
public function handle($request, Closure $next)
{
foreach($request->files as $fileKey => $file){
//Get each of the files that are being uploaded in the request, if there are no files this will just be ignored.
foreach ($file as $key => $f) {
if(!is_null($f)){
$image = Image::make($f->getPathName());
if($image->height() > 500 || $image->width() > 500){
$image->resize(500, null, function ($constraint) {
$constraint->aspectRatio();
});
$image->save($f->getPathName());
}
}
}
};
return $next($request);
}

Answer 1

I just read that Laravel uses PSR-7 requests.
https://laravel.com/docs/5.7/requests#psr7-requests
These are immutable. In other words, you can't change the data once set. What you can do however, is get it to create a new request with your new parameters.
Looking at the PSR-7 interface, we see there is a method which looks like exactly what you need:
https://github.com/php-fig/http-message/blob/master/src/ServerRequestInterface.php#L150
/**
* Create a new instance with the specified uploaded files.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated body parameters.
*
* #param array $uploadedFiles An array tree of UploadedFileInterface instances.
* #return static
* #throws \InvalidArgumentException if an invalid structure is provided.
*/
public function withUploadedFiles(array $uploadedFiles);
So, do your thing, create your array, and once it's ready, replace your request like this:
$request = $request->withUploadedFiles($yourNewArray);