laravel 如何在控制器中显示验证消息？
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How to show Validation message in Controller?
提问by Arryangga Aliev Pratamaputra
I have tried showing an error message in a Controller and it doesn't work, but when I use dd, it works.
我曾尝试在控制器中显示错误消息，但它不起作用，但是当我使用 时dd，它起作用了。
My Code:
我的代码：
if ($validation->fails())
{
/*Doesn't work
foreach ($validation->fails() as $messages) {
$messages // Doesn't work
}
*/
dd($validation->errors); //This works
}
回答by tfont
I noticed none of the provided examples here actually work! So here you go. This was my found solution after realizing that validator->messages()returns a protected object which isn't retrievable.
我注意到这里提供的示例都没有实际工作！所以你来了。这是我在意识到validator->messages()返回一个不可检索的受保护对象后找到的解决方案。
if ($validator->fails())
{
foreach ($validator->messages()->getMessages() as $field_name => $messages)
{
var_dump($messages); // messages are retrieved (publicly)
}
}
I would reference MessageBag, which is what messages()returns. And for additional acknowledgement of the Validator class - reference this.
我会引用MessageBag，这是messages()返回的内容。对于 Validator 类的额外确认 - 参考这个。
回答by Dwight
$validation->fails()returns a boolean of whether or not the input passed validation. You can access the validation messages from $validation->messages()or pass them to the view where they will be bound to the $errorsvariable.
$validation->fails()返回输入是否通过验证的布尔值。您可以访问验证消息，$validation->messages()或将它们传递给将绑定到$errors变量的视图。
See the validator docs.
请参阅验证器文档。
回答by Jason
This is what I have just used in an artisan 5.0 console command, to validate the arguments. This is in the fire()method:
这是我刚刚在 artisan 5.0 控制台命令中使用的，用于验证参数。这是在fire()方法中：
// Create the validator.
$validator = Validator::make(
$this->argument(),
['field1' => 'required|other|rules']
);
// Validate the arguments.
if ($validator->fails())
{
// Failed validation.
// Each failed field will have one or more messages.
foreach($validator->messages()->getMessages() as $field_name => $messages) {
// Go through each message for this field.
foreach($messages AS $message) {
$this->error($field_name . ': ' . $message);
}
}
// Indicate the command has failed.
return 1;
}
This is an extension on the answer from @tfont
这是@tfont 答案的扩展
You may need to change where the message is sent ($this->error()) if this command is not being run as an console command, ie CLI, command-line.
$this->error()如果此命令不是作为控制台命令（即 CLI、命令行）运行，则您可能需要更改消息的发送位置 ( )。
