stagfe2/app/Models/Survey.php

<?php

namespace App\Models;

class Survey extends Model
{
    protected $table = 'survey';

    const FORM_PATH = "views/app/patient/surveys/forms/templates";
    const ALLOWED_ENTITIES = [
        'Client',
    ];

    public function getFieldValue($field){
        $data = json_decode($this->survey_data);
        return @$data->{$field};
    }

    public function getEntity(){
        $entity = null;
        if($this->entity_type === 'Client'){
            $entity = Client::where('uid', $this->entity_uid)->first();
        }

        return $entity;
    }

}