Level 75
Can you show the form and controller method?
Also see this:
Just in case you didn't know this.
1 like
Sep 7, 2025
10
Level 6
How to have conditional validation in Form Requests?
I have a field that accepts images. But if the image validation failed, I want it to go to CustomRule and test the input there. Otherwise, throw an error.
I want it to be like this
// UpdateUploaderRequest.php
use App\Rules\CustomRule;
public function rules(): array {
return [
'images' => 'required|array',
'images.*' => 'image' || new CustomRule,
];
}
Level 63
I do like this.
public function rules(): array
{
$rules = [];
$rules['images'] = 'required|array';
if ($condition === true) {
$rules['images.*'] = 'image';
} else {
$rules['images.*'] = new CustomRule;
}
return $rules;
}
2 likes
Level 122
You can use the regular validation rules inside your custom validator.
So I would mode the image rule there and then you can control the OR behaviour
4 likes
Level 6
How can I access the validation rules inside custom validator?
//inside custom rule
public function validate(string $attribute, mixed $value, Closure $fail): void {
if($condition) {
$rules['images.*'] = "other rules";
} else {
$rules['images.*'] = 'image|dimensions...''
}
}
1 like
Level 6
I think I'm doing it wrong. 🤔
I tried doing it and it passes the validation even though it shouldn't.
public function validate(string $attribute, mixed $value, Closure $fail): void
{
$rules = $this->validator->getRules();
$rules[$attribute] = ['string'];
// $rules['images.0'] = ['string'];
}
1 like
Level 6
if its not valid image, why on earth you're trying to continue?
I want it to accept either an image file or a file path (/uploads/image123.jpg). If the field only includes a file path, it skips the file upload/storing. In that way, it saves bandwidth.
//Controller
if($request->has('images')) {
// $image->store...
}
1 like
Level 6
I don't know if it helps but I'm using Vue/Inertiajs with Dropzonejs.
const form = useForm('patch', route('...', props.data.slug), {
//...
'images' : [],
});
onMounted(() => {
const dropz = new Dropzone(..., {});
dropz.on('addedfile', function(file) { form.images = this.files })
dropz.on('removedfile', function(file) { form.images = this.files })
if(prop.data.images.length) {
//dropz.displayExistingFile(props.data.images)
}
});
<div class="dropzone"></div>
That's true. when the user uploaded a file, it returns UploadedFile object. But when editing a resource, I don't want it to fetch the data then convert it to file and then add it. That could be an expensive task, that's why i only want to fetch the data from db then straight to adding it.
1 like
Level 80
@chron Well what does the “custom” rule actually do? Why you want to run any additional valuation rules if a prerequisite one (checking if the image is actually an image) has failed? What is there to validate if you already know the value isn’t valid?
3 likes
Level 6
The custom rule just checks if that image, should be just a regular array when untouched, belongs to that entity.
1 like
Level 80
@chron I think you’re trying to combine too many different behaviours in a single field that it’s just going to be impossible to represent “nicely” when it comes to validation.
I want it to accept either an image file or a file path
Then have two separate fields. If a user can upload an image, give that input its own name. If a user can pick an existing image, then set the path in an input with a different name. Then validate the two. If you’re only expecting one of the other, make them mutually exclusive:
return [
'image' => ['exclude_with:image_path', 'image'],
'image_path' => ['exclude_with:image', 'string', 'exists:images,path'],
];
So if an image field is included, you validate it’s an uploaded file and a valid image, and you can then store it:
if ($image = $request->file('image')) {
$path = $image->store('some-images-folder');
}
Otherwise, if an image_path field is included and not empty, you can do whatever you need to with the file path, knowing it’s also the path of a valid image in your database:
if ($path = $request->filled('image_path')) {
// Do whatever with $path
}
2 likes
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