如何在 Laravel 中使用多个 required_if？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/29609822/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to use multi required_if in laravel?
提问by dirtyhandsphp
1) I am new to laravel and want to integrate validation rules. My requirement is to make third field mandatory on basis of two other fields. Field C is required if both a and b are true. I have used required_ifto put validation on basis of other single field but how can i use required_ifto check two fields?
1) 我是 laravel 的新手，想集成验证规则。我的要求是在其他两个字段的基础上强制执行第三个字段。如果 a 和 b 都为真，则字段 C 是必需的。我已经使用required_if在其他单个字段的基础上进行验证，但是如何使用required_if来检查两个字段？
2) To achieve above functionality i tried custom validation rule as well. But it's working only if i will pull required rule alongwith.
2）为了实现上述功能，我也尝试了自定义验证规则。但它只有在我将要求的规则一起拉出来时才有效。
For example:
例如：
'number_users' => 'required|custom_rule' //working
'number_users' => 'custom_rule' //Not working
回答by lukasgeiter
You can use conditional rulesfor that.
您可以为此使用条件规则。
Here's a simple example:
这是一个简单的例子：
$input = [
'a' => true,
'b' => true,
'c' => ''
];
$rules = [
'a' => 'required',
'b' => 'required'
// specify no rules for c, we'll do that below
];
$validator = Validator::make($input, $rules);
// now here's where the magic happens
$validator->sometimes('c', 'required', function($input){
return ($input->a == true && $input->b == true);
});
dd($validator->passes()); // false in this case
回答by Pedro Papadópolis
You can also create a generic validator to test the AND operator.
您还可以创建一个通用验证器来测试 AND 运算符。
Validator::extend('required_multiple', function ($attribute, $value, $parameters, $validator) {
$isRequired = true;
for ($i = 0; $i <= count($parameters) / 2; $i = $i + 2) {
$parameter = $parameters[$i];
$value = $parameters[$i + 1];
if (in_array($value, ['true', 'false'])) {
$value = (bool)$value;
}
if ($validator->getData()[$parameter] !== $value) {
$isRequired = false;
}
}
if (!$isRequired || ($isRequired && $validator->getData()[$attribute])) {
return true;
} else {
return false;
}
});
Then in your controller rules:
然后在您的控制器规则中：
'phone_input_label' => 'required_multiple:goal,lead-capture,phone_input_active,true|string',
This will make "phone_input_label" required if goal is equal to "lead-capture" andphone_input_active is true.
如果目标等于“lead-capture”并且phone_input_active 为真，这将使“phone_input_label”成为必需。
The only problem with that custom validator is that you needto send all parameters. If "phone_input_label" is not sent in the request, it won't even pass through the custom validator, not sure why it happens.
该自定义验证器的唯一问题是您需要发送所有参数。如果请求中没有发送“phone_input_label”，它甚至不会通过自定义验证器，不确定为什么会发生。
回答by manix
Laravel evaluates each rule in the giver order. Let's say:
Laravel 会按照给出者的顺序评估每个规则。让我们说：
'number_users' => 'required|custom_a|custom_b'
custom_brule will be evaluate when requiredand custom_bare true because these rules were already evaluated.
custom_b规则将在何时被评估required并且custom_b为真，因为这些规则已经被评估。
回答by Vishal Wadhawan
Here is your answer
这是你的答案
'field3' => 'required_if:field_1 | required_if:field_2'
回答by Azeame
Take a look at the laravel validation docs which I pasted a link below, you can use required_if, required_without and others to suit your needs.
看看我在下面粘贴了链接的 laravel 验证文档，您可以使用 required_if、required_without 和其他来满足您的需求。
