验证字段：required_if url 包含 Laravel 中的参数

Question

当请求的url包含某些参数时，有什么方法可以验证必填字段吗？

Answer 1

假设您正在使用Form requsts，您可以简单地使用PHP条件。

public function rules()
{
    $rules = []; // here you put some rules

    // here you check condition and add some rule when it's true
    if (str_contains($this->input('url'), 'something')) {
       $rules['some_other_field'] = 'required';

    }

    return $rules;
}

Answer 2

在验证之前您需要先检查路线....

$roles =[
    'title' => 'required|unique:posts|max:255',
    'author.name' => 'required',
    'author.description' => 'required',
];

if(Route::getCurrentRoute()->getPath() == "xxxxx"){
    $role['desc'] = 'required'
}

if(\Request::route()->getName() == "yyyy"){
    $role['desc'] = 'required'
}

if($request->is('admin/*')){
    $role['desc'] = 'required'
}

$this->validate($request, $role);

Answer 3

如果您无论如何都想验证该字段，但不是按照要求，您可以使用

    public function rules(): array
    {
        return [
            'desc' => [
                Rule::requiredIf(fn() => !empty($this->route('parameter'))),
             ]
        ];
    }