Laravel: Sometimes rule not working on input type=file

Question

I'm creating a FormRequest that validates if it contains image depending on its field name. Below is what my rules looks like:

public function rules(){
    return [
        'username'              => 'required|exists:users',
        'key'                   => 'required|exists:users,activation_key',
        'id'                    => 'sometimes|required|array|min:2',
        'id.*'                  => 'sometimes|required|file|mimes:jpeg,jpg,png|max:5000',
        'documents'             => 'sometimes|required|array|min:4',
        'documents.*'           => 'sometimes|required|file|mimes:jpeg,jpg,png,doc,pdf,docx,zip|max:5000',
        'g-recaptcha-response'  => 'required',
    ];
}

On other terms, the array of uploaded files are validated when they are set. I'm handling this trough blade.

My request is done trough Jquery.ajax() and using new FormData($('selector')[0]) to get the field values. I have my ajax params right so thats out of the factor.

The problem is, when making the HTTP request, with a blank form, the only thing that are being validated are username, key, and g-recaptcha-response

Further debugging shows that removing the sometimes rule makes it work. But I need to only conditionally check for one(e.g /upload-id will only show id[] fields and /upload-documents will only show document[] fields).

Remove sometimes|required and use only sometimes

Chukwuemeka Inya
– Chukwuemeka Inya

2018-09-21 05:01:55 +00:00
Commented Sep 21, 2018 at 5:01 — Chukwuemeka Inya
– Chukwuemeka Inya, Commented Sep 21, 2018 at 5:01

Julio Motol · Accepted Answer · 2018-09-25 16:13:17Z

Turns out that the problem is laravel somewhat ignores empty input[type=file] arrays and doesn't add it into the parameter bag in the Request Class. The workaround that i did was by using the required_if rules on the array items validation like so:

public function rules(){
    return [
        'username'              => 'required|exists:users',
        'key'                   => 'required|exists:users,activation_key',
        'account_type'          => ['required', Rule::in(['individual', 'business'])],
        'id'                    => 'nullable|array|min:2',
        'id.*'                  => 'required_if:account_type,individual|file|mimes:jpeg,jpg,png|max:5000',
        'documents'             => 'nullable|array|min:4',
        'documents.*'           => 'required_if:account_type,business|file|mimes:jpeg,jpg,png,doc,pdf,docx,zip|max:5000',
        'g-recaptcha-response'  => 'required'
    ];
}

here, i have a determinant on to which between the two will be validated, so if account_type = individal, it will only the validate deeper in the id array

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