protected function submitEditFieldValue()
    {
        if ($this->isPosted('delete')) {
            $this->deleteFieldValue();
        } else if ($this->isPosted('save') && $this->validateEditFieldValue()) {
            $this->deleteImageFieldValue();
            if (isset($this->data_field_value['field_value_id'])) {
                $this->updateFieldValue();
            } else {
                $this->addFieldValue();
            }
        }
    }