Laravel "At Least and At Most" 需要一个字段

Laravel "At Least and At Most" one field is required

我有四个不同的字段 a、b、c 和 d。我只想填满其中一个。我该怎么做?

我在 Laravel 文档中找到了 required_without_all:foo,bar,...,但这似乎至少允许一个字段。我也可以填充其他人。我只想填写一个字段,其中一个应该是必需的。

这是我目前所做的,但我可以将这些字段一起发送。

public function rules()
{
    return [
        "isFlat" => "required_without_all:isDetachedHouse,isTerrace,isSemiDetached",
        "isDetachedHouse" => "required_without_all:isFlat,isTerrace,isSemiDetached",
        "isTerrace" => "required_without_all:isFlat,isDetachedHouse,isSemiDetached",
        "isSemiDetached" => "required_without_all:isFlat,isDetachedHouse,isTerrace",
        "finishQuality" => [
            "required",
            Rule::in(["luxury", "standard", "economy"])
        ],
    ];
}

您的表单似乎包含四种类型住房的四个复选框。如果您需要恰好提供其中一个选项,为什么不使用单选按钮或 select?

<label>
    <input type="radio" name="housingtype" value="flat">
    flat
</label>
<label>
    <input type="radio" name="housingtype" value="detachedHouse">
    detached house
</label>
<label>
    <input type="radio" name="housingtype" value="terrace">
    terrace
</label>
<label>
    <input type="radio" name="housingtype" value="semiDetached">
    semi-detached
</label>

或 select:

<select name="housingtype">
    <option value="flat">flat</option>
    <option value="detachedHouse">detached house</option>
    <option value="terrace">terrace</option>
    <option value="semiDetached">semi-detached</option>
</select>

那么验证应该是这样的:

[
    'housingtype' => 'required|in:flat,detachedHouse,terrace,semiDetached',
    // ...
]

一个额外的好处:现在添加一种住房类型是微不足道的!

试试这个

                $validations = $request->validate([
            'text1' => [
                'bail',
                function ($attribute, $value, $fail) {
                    if (request()->filled('text2') && request()->filled("text3")) {
                        return $fail('Only 1 of the three is allowed');
                    }
                }
            ],
            "text2" => [
                'bail',
                function ($attribute, $value, $fail) {
                    if (request()->filled('text1') && request()->filled("text3")) {
                        return $fail('Only 1 of the three is allowed');
                    }
                }
            ],
            "text3" => [
                'bail',
                function ($attribute, $value, $fail) {
                    if (request()->filled('text1') && request()->filled("text2")) {
                        return $fail('Only 1 of the three is allowed');
                    }

                    if (!request()->filled('text1') && !request()->filled("text2") && !request()->filled($attribute)) {
                        return $fail('You must fill one');
                    }
                }
            ],
        ]);

替换text1text2text3

当然你可以在function之后的每个text中添加更多的验证。您可以验证是字符串还是数字等...例如,在函数写入“size:3”之后,如果您写入单个字符

,这将return 出错

示例:

//validation
'text1' => [
                'bail',
                function ($attribute, $value, $fail) {
                    if (request()->filled('text2') && request()->filled("text3")) {
                        return $fail('Only 1 of the three is allowed');
                    }
                },
               "size:3"
            ],
// I fill form with these values
text1[value="q"]
text2[value=null]
text3[value="hey"]

将returns个错误:

  • text1 必须是 3 个字符。
  • 三个中只允许一个