如果yii2中的另一组字段为空，我想使一组字段成为必填字段。任何一组字段都需要完美地(必填)填充

class YourModel extends \yii\db\ActiveRecord
{
    public $group1;
    public $group2;
    
    // ...
}

public function rules()
{
    return [
        // ...
        [['group1'], 'required', 'when' => function($model) {
            return empty($model->group2);
        }, 'whenClient' => "function (attribute, value) {
            return $('#yourmodel-group2').val() == '';
        }"],
        [['group2'], 'required', 'when' => function($model) {
            return empty($model->group1);
        }, 'whenClient' => "function (attribute, value) {
            return $('#yourmodel-group1').val() == '';
        }"],
        // ...
    ];
}