Typo3 扩展:防止 BE 用户在字段中进行不需要的输入时保存记录 [英] Typo3 extension: Prevent the BE user to save a record if he made an undesired input in a field

问题描述

基本上我试图阻止 BE 用户输入错误的内容.Thatfore我使用外部评估类(https://docs.typo3.org/typo3cms/TCAReference/8-dev/ColumnsConfig/Type/Input.html).

Basically I try to prevent the BE user to input something wrong. Thatfore i use an external evaluation class (https://docs.typo3.org/typo3cms/TCAReference/8-dev/ColumnsConfig/Type/Input.html).

现在我的问题是:我实现的函数更改了输入并设置了属性的更改

Now my problem is: The function i implemented changes the input and sets the change for the property

public function evaluateFieldValue($value, $is_in, &$set)
{
  if(...){
  $value = 'Wrong input';
  }
  return $value;
}

但这不是我的目标.我希望 BE 用户在保存记录时获得错误消息窗口(如错误输入").我该怎么做?

but that's not what i'm aiming for. I want the BE user to get an error message window (like 'wrong input') on saving the record. How do i do that?

推荐答案

我会给出一个入口路径，而不是一个完整的解决方案.

I will give an entry path, not a full solution.

ext_localconf.php

$signalSlotDispatcher = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('TYPO3\\CMS\\Extbase\\SignalSlot\\Dispatcher');
$signalSlotDispatcher->connect(
    'TYPO3\CMS\Backend\Controller\EditDocumentController', 'initAfter',
    'YourVendor\YourExtension\Hooks\Backend\EditDocSlot', 'initAfter');

YourVendor\YourExtension\Hooks\Backend\EditDocSlot.php

namespace YourVendor\YourExtension\Hooks\Backend;

use TYPO3\CMS\Backend\Controller\EditDocumentController;
use TYPO3\CMS\Core\Page\PageRenderer;
use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;

class EditDocSlot
{
    /**
     *
     * @param EditDocumentController $ref
     */
    public function initAfter(EditDocumentController $ref)
    {
        /** @var PageRenderer $pageRenderer */
        $pageRenderer = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Page\PageRenderer::class);
        $pageRenderer->addJsFile(ExtensionManagementUtility::extRelPath('your_extension') . 'Resources/Public/JavaScript/FormEngineValidation.js');
    }
}

your_extension/Resources/Public/JavaScript/FormEngineValidation.js

require(['jquery', "TYPO3/CMS/Backend/FormEngineValidation"], function ($, FormEngineValidation) {
    // extend FormEngineValidation
    // check FormEngineValidation.processValue and
    // check FormEngineValidation.validateField
    // and create a new eval ???!!! :)
});

一些 javascript 补丁信息http://me.dt.in.th/page/JavaScript-override/

Some javascript patching info http://me.dt.in.th/page/JavaScript-override/

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