CakePHP 3 - 验证：不可更改的字段

Question

我有几个表，其中包含永远不应更改的字段。相反，应完全删除行并在需要进行更改时重新添加行。

是否有一种巧妙的方法来添加验证或构建规则来防止任何更改？

我在 https://book.cakephp.org/3.0/en/orm/validation.html or https://api.cakephp.org/3.8/class-Cake.Validation.Validation.html

中找不到任何内容

Answer 1

我最终创建了一个自定义且可重复使用的规则：

<?php
// in src/Model/Rule/StaticFieldsRule.php

namespace App\Model\Rule;

use Cake\Datasource\EntityInterface;

/**  * Rule to specify fields that cannot be changed  */ class StaticFieldsRule {
    protected $_fields;

    /**
     * Constructor
     * 
     * @param array $fields
     * @param array $options
     */
    public function __construct($fields, array $options = [])
    {
        if (!is_array($fields))
        {
            $fields = [$fields];
        }

        $this->_fields = $fields;
    }

    /**
     * Call the actual rule itself
     * 
     * @param EntityInterface $entity
     * @param array $options
     * @return boolean
     */
    public function __invoke(EntityInterface $entity, array $options)
    {
        // If entity is new it's fine
        if ($entity->isNew())
        {
            return true;
        }

        // Check if each field is dirty
        foreach ($this->_fields as $field)
        {
            if ($entity->isDirty($field))
            {
                return false;
            }
        }

        return true;
    }

}

用法比看起来像：

<?php
// in src/Model/Table/MyTable.php

namespace App\Model\Table;
//...
use App\Model\Rule\StaticFieldsRule;

class MyTable extends Table
{
    // ...

    public function buildRules(RulesChecker $rules)
    {
        $rules->add(new StaticFieldsRule(['user_id']), 'staticFields', [
            'errorField' => 'user_id',
            'message' => 'User_id cannot be changed'
        ]);
    }
}

CakePHP 3 - 验证：不可更改的字段

CakePHP 3 - Validation: unchangeable field

validation

cakephp

cakephp-3.0

cakephp-3.x