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# Upgrade Guide
## General Notes
## Upgrading To 10.0 From 9.x
### Minimum PHP Version
PHP 7.3 is now the minimum required version.
### Minimum Laravel Version
Laravel 8.0 is now the minimum required version.
### Old Static Personal Client Methods Removed
PR: https://github.com/laravel/passport/pull/1325
The personal client configuration methods have been removed from the `Passport` class since they are no longer necessary. You should remove any calls to these methods from your application's service providers.
## Upgrading To 9.0 From 8.x
### Support For Multiple Guards
PR: https://github.com/laravel/passport/pull/1220
Passport now has support for multiple guard user providers. Because of this change, you must add a `provider` column to the `oauth_clients` database table:
Schema::table('oauth_clients', function (Blueprint $table) {
$table->string('provider')->after('secret')->nullable();
});
If you have not previously published the Passport migrations, you should manually add the `provider` column to your database.
### Client Credentials Secret Hashing
PR: https://github.com/laravel/passport/pull/1145
Client secrets may now be stored using a Bcrypt hash. However, before enabling this functionality, please consider the following. First, there is no way to reverse the hashing process once you have migrated your existing tokens. Secondly, when hashing client secrets, you will only have one opportunity to display the plain-text value to the user before it is hashed and stored in the database.
#### Personal Access Clients
Before you continue, you should set your personal access client ID and unhashed secret in your `.env` file:
PASSPORT_PERSONAL_ACCESS_CLIENT_ID=client-id-value
PASSPORT_PERSONAL_ACCESS_CLIENT_SECRET=unhashed-client-secret-value
Next, you should register these values by placing the following calls within the `boot` method of your `AppServiceProvider`:
Passport::personalAccessClientId(config('passport.personal_access_client.id'));
Passport::personalAccessClientSecret(config('passport.personal_access_client.secret'));
> Make sure you follow the instructions above before hashing your secrets. Otherwise, irreversible data loss may occur.
#### Hashing Existing Secrets
You may enable client secret hashing by calling the `Passport::hashClientSecrets()` method within the `boot` method of your `AppServiceProvider`. For convenience, we've included a new Artisan command which you can run to hash all existing client secrets:
php artisan passport:hash
**Again, please be aware that running this command cannot be undone. For extra precaution, you may wish to create a backup of your database before running the command.**
### Client Credentials Middleware Changes
PR: https://github.com/laravel/passport/pull/1132
[After a lengthy debate](https://github.com/laravel/passport/issues/1125), it was decided to revert the change made [in a previous PR](https://github.com/laravel/passport/pull/1040) that introduced an exception when the client credentials middleware was used to authenticate first party clients.
### Switch From `getKey` To `getAuthIdentifier`
PR: https://github.com/laravel/passport/pull/1134
Internally, Passport will now use the `getAuthIdentifier` method to determine a model's primary key. This is consistent with the framework and Laravel's first party libraries.
### Remove Deprecated Functionality
PR: https://github.com/laravel/passport/pull/1235
The deprecated `revokeOtherTokens` and `pruneRevokedTokens` methods and the `revokeOtherTokens` and `pruneRevokedTokens` properties were removed from the `Passport` object.
## Upgrading To 8.0 From 7.x
### Minimum & Upgraded Versions
Commit: https://github.com/laravel/passport/commit/97e3026790d953d7a67fe487e30775cd995e93df
The minimum Laravel version is now v6.0 and the minimum PHP version is now 7.2. The underlying `league/oauth2-server` has also been updated to v8.
### Public Clients
PR: https://github.com/laravel/passport/pull/1065
Passport now supports public clients and PCKE. To leverage this feature, you should update the the `secret` column of the `oauth_clients` table to be `nullable`:
Schema::table('oauth_clients', function (Blueprint $table) {
$table->string('secret', 100)->nullable()->change();
});
### Renderable Exceptions For OAuth Errors
PR: https://github.com/laravel/passport/pull/1066
OAuth exceptions can now be rendered. They will first be converted to Passport exceptions. If you are explicitly handling `League\OAuth2\Server\Exception\OAuthServerException` in your exception handler's report method you will now need to check for an instance of `Laravel\Passport\Exceptions\OAuthServerException` instead.
### Fixed Credential Checking
PR: https://github.com/laravel/passport/pull/1040
In the previous versions of Passport, you could pass tokens granted by a different client type to the `CheckClientCredential` and `CheckClientCredentialForAnyScope` middleware. This behavior has been corrected and an exception will be thrown if you attempt to pass a token generated by a different client type.
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