Best way to validate that at least one checkbox is checked

use Phalcon\Forms\Element\Check;
use Phalcon\Validation\Validator\PresenceOf;

$check = new Check("name");
$check->addValidator(
    new PresenceOf(
        [
            "message" => "Please select one checkbox",
        ]
    )
);

This example is just for one checkbox, but I have some of them

Hi @eugen80 Phalcon is awesome but sometimes dont have all you need built and ready to use

You can make your own validator

To-Do check this resources

• Awesome Phalcon
• Phalcon incubator

Good luck and welcome to Phalcon ;)

Custom validation:

class MyValidation extends Valiadation
{
    public function initialize()
    {
        $this->add(['checkbox1', 'checkbox2', 'checkbox3', ...], new PresenceOf());
    }
}

class MyForm extends Form
{
    public function getValidation()
    {
        return new MyValidation();
    }

    public function initialize()
    {
        $this->add(new Check("checkbox1"));
        $this->add(new Check("checkbox2"));
        $this->add(new Check("checkbox3"));
    }
}

Pay attention if your form needs to persist checkbox (un)checked state, i.e. when there is validation error.

//Controller
$partners_offers_unchecked = $this->request->isPost() && !$this->request->get('partners_offers') ? true : false;
$form = new SignUpForm(null, ['partners_offers_unchecked' => $partners_offers_unchecked]);

//Form definition
 $partnersOffers = new Check('partners_offers');
        if (!$options['partners_offers_unchecked']) {
            $partnersOffers->setDefault('checked');
        }
        $this->add($partnersOffers);