在 Yii2 中报错：Model not inserted due to validation error.

	$input->value = $context->processDraft($value, $form, $field);

	Yii::info(
		[
			'input' => $input->toArray()
		],
		'SurveyFormContentController.actionDraftUpdate',

	);

	if (!$input->save()) {

		$transaction->rollBack();
		return [
			'code' => 10003,
			'message' => '更新报名信息失败',
		];
	}

[
    'input' => [
        'id' => '1826803808485990',
        'survey_form_id' => '1826803808485966',
        'content_id' => '1826803808485988',
        'field_id' => '1826803808485987',
        'value' => 444,
    ],
]

$input->value = (string)$context->processDraft($value, $form, $field);