How validate unique email out of the user that is updating it in Laravel?
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Title: Validating Unique Emails During User Updates in Laravel
Introduction: In modern web applications, users often need to update their account details - including email addresses. Ensuring the uniqueness of emails is crucial for security and data integrity. This blog post will guide you through how to validate unique emails during user updates while accounting for the user's current email address in Laravel 5.2.
Step 1: Create a User Model
First, create a User model that represents your application's users. Add the following validation rules:
```php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Validation\Rule;
class User extends Model
{
protected $fillable = ['email'];
public static function rules()
{
return [
'email' => ['required', new UniqueWhenUpdatingExceptSelf, Rule::unique('users')],
];
}
}
```
Here, we have defined a custom validation rule named "UniqueWhenUpdatingExceptSelf", which ensures the uniqueness of emails for users updating their account details. The Rule class is imported and used in the User model for email field validation.
Step 2: Create the Custom Validation Rule Class
Create a validator class file, such as UniqueWhenUpdatingExceptSelfValidator.php, and add the following code:
```php
attribute = $attribute;
}
public function validate()
{
if ($this->attribute == 'email' && !empty($this->parameters[0])) {
// Check if the current user has a different email or not.
$currentUserEmail = auth()->user()->{$this->attribute};
$newUserEmail = $this->validator->getData()[$this->attribute];
if ($currentUserEmail === $newUserEmail) {
// If the current user's email is being updated, allow it to be unique.
return true;
} else {
$this->errors->add($this->attribute, trans('validation.unique'));
}
} else {
// If not a specific field or if the current user's email is not being updated, throw an error.
$this->errors->add($this->attribute, trans('validation.unique'));
}
}
}
```
This class inherits from the Validator class and overrides the validate method. The logic checks if the attribute being validated is 'email' and whether it's being updated or not (i.e., not currently authenticated user). If the email isn't changing during updating, we check for uniqueness as per the standard Laravel validation rules. However, if this is a current user's email update, we allow them to keep their own unique email address.
Step 3: Using the Validator Class in Routes and Controllers
To use these validations in your existing routes or controllers, add the following code:
```php
use Illuminate\Validation\Rule;
use App\UniqueWhenUpdatingExceptSelfValidator;
Route::post('update-account', function () {
$validator = Validator::make(request()->all(), [
'email' => new UniqueWhenUpdatingExceptSelfValidator('email', request('current_email'), null),
]);
if ($validator->fails()) {
return redirect()->back()
->withInput()
->withErrors($validator);
}
// Continue updating the user account details.
});
```
The code first creates a validator object with the current request data and custom validation rules. If validations pass, proceed with processing the user's update request.
Conclusion: In this comprehensive blog post, you have learned how to validate unique emails during user updates in Laravel 5.2 while keeping track of the users' current email addresses. This ensures a seamless and secure account updating experience for your application users. Don't forget to include relevant backlinks to https://laravelcompany.com for more comprehensive resources on Laravel development.