Laravel validation: rules in required_if

Question

I have a select list, where the first option is disabled, that's way when the user does not choose an valid option, the result of the select list will not be in the request.

In the validation, the field required, if the value of an other field is for example : 1, in case not 1, the field is not required.

The code:

'city_id' => [
'required',
'integer',
Rule::in(City::availableCities()),
],
'district_id' => new DistrictValidation(request('city_id')),

How I can do that, the district_id throw the validation every time, regardless of, it is in the request, or not.

Thanks for answers,

Update: Maybe you see clearly, if the DistrictValidation rule is here:

class DistrictValidation implements Rule
{
    protected $city;
    private $messages;

    /**
     * Create a new rule instance.
     *
     * @param $cityId
     */
    public function __construct($cityId)
    {
        $this->city = City::find($cityId);
    }

    /**
     * Determine if the validation rule passes.
     *
     * @param  string  $attribute
     * @param  mixed  $value
     * @return bool
     */
    public function passes($attribute, $value)
    {
        dd('here');
        if (!$this->city) {
            return false;
        }

        if (!$this->city->hasDistrict) {
            return true;
        }

        $validator = Validator::make([$attribute => $value], [
            $attribute => [
                'required',
                'integer',
                Rule::in(District::availableDistricts()),
            ]
        ]);

        $this->messages = $validator->messages();

        return $validator->passes();
    }
    /**
     * Get the validation error message.
     *
     * @return string
     */
    public function message()
    {
       return optional($this->messages)->first('district_id');
    }
}

can you show your full validation code?

Exterminator
– Exterminator

2018-10-17 06:54:30 +00:00
Commented Oct 17, 2018 at 6:54 — Exterminator
– Exterminator, Commented Oct 17, 2018 at 6:54

Exterminator · Accepted Answer · 2018-10-17 11:05:35Z

2

You can use required_if condition defined in laravel validation Here is the link to the proper documentaion Laravel Validation

Validator::make($data, [
    'city_id' => [
        'required',
        'integer',
        Rule::in(City::availableCities()),
    ],
    'district_id'=>[
         'required_with:city_id,',
    ]
]);

edited Oct 17, 2018 at 11:05

answered Oct 17, 2018 at 6:57

Exterminator

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3 Comments

LaszloP Over a year ago

Sorry, but I don't understand this. If you thought about 'required_if:city_id == 1', it is ok, it's work, but I would not like this. I think something like that: 'required_id:city_id = new DistrictValidation... but, of course, it does not work...

LaszloP Over a year ago

"Validation rule required_if requires at least 2 parameters."

LaszloP Over a year ago

Ok, but I don't understand yet, how does the districtValidation rule run?

Salim Ibrohimi · Accepted Answer · 2018-10-17 06:24:20Z

0

Try this:

'city_id' => [
  'nullable',
  'numeric',
  Rule::in(City::availableCities())
],
'district_id' => new DistrictValidation(request('city_id')),

answered Oct 17, 2018 at 6:24

Salim Ibrohimi

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1 Comment

Salim Ibrohimi Over a year ago

@LaszloP read docs: laravel.com/docs/5.7/validation#a-note-on-optional-fields

Zoha · Accepted Answer · 2018-10-17 06:45:11Z

0

try this :

$myValidations = [
    "city_id" => [
        "required",
        "integer"
    ]
]

// if city_id exists in availableCities so add some rules 
if(collect(city::availableCities)->contains(request("city_id"))){
    $myValidations["district_id"] = new DistrictValidation(request('city_id'))
}

// validate request fields with $myValidations variable

answered Oct 17, 2018 at 6:45

Zoha

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3 Comments

LaszloP Over a year ago

Ok, but if the 'district_id' non exist in the request, the validation will not happen.

Zoha Over a year ago

@LaszloP why ? If I meant you right you want to validate district_id if city_id exists in availableCities

LaszloP Over a year ago

No. What I would like: For example if the city_id = 1, then the district_id => 'required', if the city_id = 2, then the district_id => 'nullable'

Kapitan Teemo · Accepted Answer · 2018-10-17 08:07:30Z

0

try using the required_if validation where the field under validation must be present and not empty if the anotherfield field is equal to any value.

required_if:field,value,...

use it like:

$request->validate([ 'city_id' => 'required|integer|Rule::in(City::availableCities())', 'district_id' => 'required_if:city_id,1', ]);

try to read more laravel validation here

edited Oct 17, 2018 at 8:07

answered Oct 17, 2018 at 6:50

Kapitan Teemo

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1 Comment

hellow Over a year ago

While this might answer the authors question, it lacks some explaining words and links to documentation. Raw code snippets are not very helpful without some phrases around it. You may also find how to write a good answer very helpful. Please edit your answer.

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