我想创建这个扩展验证。
Validator::extend('my_custom_validation_rule', function ($attribute, $value, $parameters) {
// I guess I should be setting the error message for this here.(Its dynamic)
// We can return true or false here depending upon our need.
}
我会像这样使用这个规则
'my_field' => 'required|my_custom_validation_rule'
,
我想对“my_custom_validation_rule
”
我无法从文档中找到有关它的内容。无论如何要做到这一点?
答案 0 :(得分:25)
extend
方法允许将消息作为第三个参数传递:
Validator::extend('my_custom_validation_rule', function ($attribute, $value, $parameters) {
// ...
}, 'my custom validation rule message');
默认情况下,您只能使用动态变量:attribute
。如果您想添加更多使用Validator::replacer()
:
Validator::replacer('my_custom_validation_rule', function($message, $attribute, $rule, $parameters){
return str_replace(':foo', $parameters[0], $message);
});
答案 1 :(得分:2)
您还可以在验证翻译文件下定义自定义验证规则的消息。
/resources/lang/en/validation.php
....
'unique' => 'The :attribute has already been taken.',
'uploaded' => 'The :attribute failed to upload.',
'url' => 'The :attribute format is invalid.',
//place your translation here
'my_custom_validation_rule' => 'The :attribute value fails custom validation.'
答案 2 :(得分:0)
可能(不是很优雅)的解决方法是:
$message = 'my custom validation rule message' . request()->get('param');
Validator::extend('my_custom_validation_rule', function ($attribute, $value, $parameters) {
//
}, $message);
答案 3 :(得分:0)
这与@lukasgeiter答案基本相同,但是如果需要在扩展函数中管理动态变量,则可以在扩展内部直接使用$validator->addReplacer
。
Validator::extend('my_custom_validation_rule', function ($attribute, $value, $parameters, $validator) {
// Test custom message
$customMessage = request()->get('foo')
? "Foo doesn't exist"
: "Foo exist";
// Replace dynamic variable :custom_message with $customMessage
$validator->addReplacer('my_custom_validation_rule',
function($message, $attribute, $rule, $parameters) use ($customMessage) {
return \str_replace(':custom_message', $customMessage, $message);
}
);
// Test error message. (Make it always fail the validator)
return false;
}, 'My custom validation rule message. :custom_message');