PhalconRest\Transformers\ModelTransformer::getFieldValue PHP Method

    protected function getFieldValue($item, $propertyName, $fieldName)
    {
        $dataType = array_key_exists($propertyName, $this->getModelDataTypes()) ? $this->getModelDataTypes()[$propertyName] : null;
        $model = $this->getModel($item);
        $value = $model->{$propertyName};
        if ($value === null) {
            return null;
        }
        $typedValue = $value;
        switch ($dataType) {
            case self::TYPE_INTEGER:
                $typedValue = $this->formatHelper->int($value);
                break;
            case self::TYPE_FLOAT:
                $typedValue = $this->formatHelper->float($value);
                break;
            case self::TYPE_DOUBLE:
                $typedValue = $this->formatHelper->double($value);
                break;
            case self::TYPE_BOOLEAN:
                $typedValue = $this->formatHelper->bool($value);
                break;
            case self::TYPE_STRING:
                $typedValue = (string) $value;
                break;
            case self::TYPE_DATE:
                $typedValue = $this->formatHelper->date($value);
                break;
            case self::TYPE_JSON:
                $typedValue = json_decode($value);
                break;
        }
        return $typedValue;
    }