phplaravellaravel-livewirelivewire-3

Laravel/Livewire v3 - set array element validation attribute

I'm trying to validate an array of files I have in Laravel and Livewire v3. I've written up the validation rules for my properties and hit a roadblock here:

#[Validate(["files" => ["array", "max:5"], "files.*" => ["image", "mimes:jpg,bmp,png"]])]
public array $files = [];

The validation works fine, however I am struggling on changing the error message to use an alias on array elements that have been validated:

The files.0 field must be a file of type: png, jpg.

Is the message I get, but I am trying to change it to:

The file field must be a file of type: png, jpg.

I've managed to achieve that when not validating an array like this:

#[Validate(["required", "string", "min:10"], as: "question")]
public ?string $question;

I've also tried changing the validation attributes like this, too:

protected array $validationAttributes = [
    "files.0" => "file",
    "files.1" => "file",
    "files.2" => "file",
    "files.3" => "file",
    "files.4" => "file"
];

but can't get it to work on files mentioned above.

Does anyone know if this is possible, or should I rewrite validation to be like it was in Livewire v2?

EDIT: I've done some experimentation as suggested by one of the answers:

#[Validate(["files.*" => ["image", "mimes:jpg,bmp,png"]], message: "The file field must be a file of type: png, jpg")]
public array $files = [];

Seems to throw an Array to string conversion exception if "files.*" validation array has more than one rule.

After reducing the validation rules to just mimes, the exception went away, but the message still was not applied.

Solution

  • You could achieve that like this by editing the validation message

    #[Validate(["files" => ["array", "max:5"], "files.*" => ["image", "mimes:jpg,bmp,png"]], message: ['The file field must be a file of type: png, jpg'])]
public array $files = [];

    or for more cleaner way you could write it like this

    #[Validate(["files" => ["array", "max:5"]])]
#[Validate(["files.*" => ["image", "mimes:jpg,bmp,png"]], message: ['The file field must be a file of type: png, jpg'])]
public array $files = [];

    for more info check Custom validation message