Laravel验证-如何检查给定数组中是否存在值? [英] Laravel Validation - How to check if a value exists in a given array?

问题描述

好吧，好吧，我尝试了很多来自验证文档的规则，但都给出了相同的错误提示

So, okay i tried a lot of rules from validation docs but all give me same error saying

数组到字符串的转换

Array to string conversion

这是我添加数组的方式:

Here is how I add the array:

$this->validate($request,[
                'employee' => 'required|in:'.$employee->pluck('id')->toArray(),
            ],[
                'employee.in' => 'employee does not exists',
            ]);

关于如何实现这一目标的任何提示?

Any hint on how to achieve this?

我创建了一个自定义验证器，但仍然似乎无法传递数组

i created a custom validator but still passing array seems to be not possible

推荐答案

将数组放大为字符串并以逗号连接.

Implode the array as a string and join it on commas.

'employee' => 'required|in:'.$employee->implode('id', ', '),

这将生成验证器在进行in比较时期望的正确的逗号分隔的字符串.

This will make the correct comma separated string that the validator expects when making an in comparison.

修改

这仍然有效，但已不再是 Laravelesque 的使用方式.请参阅@nielsiano的答案.

This still works, but is not the Laravelesque way of doing it anymore. See the answer by @nielsiano.

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