Let's talk about changing and customizing login error prompts in laravel

Laravel is a powerful PHP framework for quickly building high-quality web applications. When users log in to the system, Laravel provides error prompts by default to help users quickly solve login problems. However, sometimes the error message may not be clear or accurate enough for users. This article will introduce how to change Laravel's default login error message and how to customize the error message.

1. Change the default error message

When Laravel's user authentication system fails to verify, the system will automatically display an error message, usually similar to "These credentials do not match our records " news. However, this default error message is not clear enough and may confuse users.

In order to change the default error message, we need to modify several methods in Laravel's "app\Http\Controllers\Auth\LoginController.php" file. Open this file and we will see the following methods:

public function username()
{
return 'email';
}
protected function credentials(Request $request)
{
return $request->only($this->username(), 'password');
}
protected function sendFailedLoginResponse(Request $request)
{
throw ValidationException::withMessages([
    $this->username() => [trans('auth.failed')],
]);
}

The above three methods are the login verification methods provided by Laravel by default. We can change Laravel's default login error message through these methods. We can add our own error message in the "sendFailedLoginResponse" method:

protected function sendFailedLoginResponse(Request $request)
{
throw ValidationException::withMessages([
    $this->username() => [trans('auth.failed') => '对不起，您的用户名或密码不正确'],
]);
}

In the above example, we changed Laravel's default error message to "Sorry, your username or password is incorrect." Therefore, when a user attempts to log in with an incorrect username or password, a more descriptive error message will be displayed.

2. Customized error messages

In addition to using more descriptive error messages, we can also customize error messages. We can use custom error messages in Laravel's validation rules. We can add our own error messages using the "messages" method in our validation rules.

Here is an example. We have created a verification rule for new user registration, which contains the "name", "email" and "password" fields:

public function store(Request $request)
{
$validatedData = $request->validate([
    'name' => 'required',
    'email' => 'required|email|unique:users',
    'password' => 'required|min:8',
]);

// Create user...
}

In this rule, We verified the "name", "email" and "password" fields. If a field fails validation, Laravel's default error message will be displayed.

If we need to customize the error message, we can use the "messages" method to customize the error message for each field. Here is an example:

public function store(Request $request)
{
$validatedData = $request->validate([
    'name' => 'required',
    'email' => 'required|email|unique:users',
    'password' => 'required|min:8',
], [
    'name.required' => '请输入您的姓名。',
    'email.required' => '请输入您的电子邮件地址。',
    'email.email' => '无效的电子邮件地址。',
    'email.unique' => '电子邮件地址已经存在。',
    'password.required' => '请输入您的密码。',
    'password.min' => '密码必须至少为8个字符。',
]);

// Create user...
}

In the above example, we have customized the error message for each field. So if the validation fails, the system will display an error message with a custom error message.

Summary

In this article, we learned how to change Laravel’s default login error message and customize the error message for validation rules. Through these methods, we can provide users with more clear and humane error messages so that users can quickly resolve login issues. At the same time, we can also make the system more intelligent and excellent, and provide a more friendly user interface.

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