Laravel“至少一个”字段需要验证

Posted 2023-02-24

【中文标题】Laravel“至少一个”字段需要验证

【英文标题】：Laravel "At Least One" Field Required Validation

【发布时间】：2014-06-17 13:22:49

【问题描述】：

所以我有这个包含这些字段的表单

 Form::open(array('url' => 'user', 'id' => 'user_create_form')) 

    <div class="form-input-element">
        <label for="facebook_id">ID Facebook</label>
         Form::text('facebook_id', Input::old('facebook_id'), array('placeholder' => 'ID Facebook')) 
    </div>

    <div class="form-input-element">
        <label for="twitter_id">ID Twitter</label>
         Form::text('twitter_id', Input::old('twitter_id'), array('placeholder' => 'ID Twitter')) 
    </div>

    <div class="form-input-element">
        <label for="instagram_id">ID Instagram</label>
         Form::text('instagram_id', Input::old('instagram_id'), array('placeholder' => 'ID Instagram')) 
    </div>

 Form::close() 

我想告诉 Laravel，这些字段中至少有一个是必需的。我如何使用验证器做到这一点？

$rules = array(
    'facebook_id'                   => 'required',
    'twitter_id'                    => 'required',
    'instagram_id'                  => 'required',
);
$validator = Validator::make(Input::all(), $rules);

【参考方案1】：

试试看required_without_all:foo,bar,...，看起来应该可以帮到你。引用他们的文档：

只有在所有其他指定字段都不存在时，才必须存在正在验证的字段。

---

示例：

$rules = array(
    'facebook_id' => 'required_without_all:twitter_id,instagram_id',
    'twitter_id' => 'required_without_all:facebook_id,instagram_id',
    'instagram_id' => 'required_without_all:facebook_id,twitter_id',
);
$validator = Validator::make(Input::all(), $rules);

【讨论】：

谢谢！ Laravel 太棒了！

太棒了，拯救了我的一天。

这可行，但问题是消息的重复。如果你想避免这种情况，你可以尝试***.com/a/65806163/959260

的方式

正在寻找这个！ Laravel 太棒了！谢谢！

【参考方案2】：

**For automatic validation**

$rules = array(
    'facebook_id' => 'required_without_all:twitter_id,instagram_id',
    'twitter_id' => 'required_without_all:facebook_id,instagram_id',
    'instagram_id' => 'required_without_all:facebook_id,twitter_id',
);
$message = array(
    'facebook_id' => 'The facebook field is required when none of twitter / instagram are present.',
    'twitter_id' => 'The twitter field is required when none of facebook / instagram are present.',
    'instagram_id' => 'The instagram field is required when none of twitter / facebook are present.');

$validator = Validator::make(Input::all(), $rules, $message)->validate();

【参考方案3】：

使用我已经完成的代码

php artisan make:rule RequiredWithout

use Illuminate\Contracts\Validation\Rule;

class RequiredWithout implements Rule

    private $without = [];
    private $current_attribute = "";
    private $no_need = "";

    public function __construct($without)
    
        if(is_string($without))
        
            $this->without = [$without];
        
        elseif(is_array($without))
        
            $this->without = $without;
        
        else
           throw new \Exception('$without must be array or string');
    

    public function passes($attribute, $value)
    
        $this->current_attribute = $attribute;
        $requests = request()->all();
        foreach ($this->without as $WO_i)
                    
            if(array_key_exists($WO_i, $requests))
            
                $this->no_need = $WO_i;
                return false;
            
        
        return true;
    

    public function message()
    
        return "the $this->current_attribute Field and $this->no_need Shouldn't be Exist in this request together";
    

然后在控制器中使用这个

'country_id' => ['nullable', 'exists:countries,id', new ValidCountryID(), new RequiredWithout('country_code')],
'country_code' => ['nullable', 'exists:countries,IsoCountryCode', new ValidCountryID(), new RequiredWithout('country_id')],