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How to Override any Part of a Bundle
How to Override any Part of a Bundle¶
When using a third-party bundle, you might want to customize or override some of its features. This document describes ways of overriding the most common features of a bundle.
The bundle overriding mechanism means that you cannot use physical paths to
refer to bundle's resources (e.g.
use logical paths in your bundles (e.g.
and call the locateResource() method
to turn them into physical paths when needed.
Third-party bundle templates can be overridden in the
<your-project>/templates/bundles/<bundle-name>/ directory. The new templates
must use the same name and path (relative to
the original templates.
For example, to override the
template from the FOSUserBundle, create this template:
If you add a template in a new location, you may need to clear your
php bin/console cache:clear), even if you are in debug mode.
Symfony internals use some bundles too, so you can apply the same technique to override the core Symfony templates. For example, you can customize error pages overriding TwigBundle templates.
Routing is never automatically imported in Symfony. If you want to include
the routes from any bundle, then they must be manually imported from somewhere
in your application (e.g.
The easiest way to "override" a bundle's routing is to never import it at all. Instead of importing a third-party bundle's routing, simply copy that routing file into your application, modify it, and import it instead.
If the controller is a service, see the next section on how to override it. Otherwise, define a new route + controller with the same path associated to the controller you want to override (and make sure that the new route is loaded before the bundle one).
Services & Configuration¶
If you want to modify the services created by a bundle, you can use service decoration.
Entities & Entity Mapping¶
Due to the way Doctrine works, it is not possible to override entity mapping
of a bundle. However, if a bundle provides a mapped superclass (such as the
User entity in the FOSUserBundle) one can override attributes and
associations. Learn more about this feature and its limitations in
the Doctrine documentation.
Symfony loads all validation configuration files from every bundle and combines them into one validation metadata tree. This means you are able to add new constraints to a property, but you cannot override them.
To overcome this, the 3rd party bundle needs to have configuration for validation groups. For instance, the FOSUserBundle has this configuration. To create your own validation, add the constraints to a new validation group:
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# config/validator/validation.yaml FOS\UserBundle\Model\User: properties: plainPassword: - NotBlank: groups: [AcmeValidation] - Length: min: 6 minMessage: fos_user.password.short groups: [AcmeValidation]
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<!-- config/validator/validation.xml --> <?xml version="1.0" encoding="UTF-8" ?> <constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd"> <class name="FOS\UserBundle\Model\User"> <property name="plainPassword"> <constraint name="NotBlank"> <option name="groups"> <value>AcmeValidation</value> </option> </constraint> <constraint name="Length"> <option name="min">6</option> <option name="minMessage">fos_user.password.short</option> <option name="groups"> <value>AcmeValidation</value> </option> </constraint> </property> </class> </constraint-mapping>
Now, update the FOSUserBundle configuration, so it uses your validation groups instead of the original ones.
Translations are not related to bundles, but to translation domains.
For this reason, you can override any bundle translation file from the main
translations/ directory, as long as the new file uses the same domain.
For example, to override the translations defined in the
Resources/translations/FOSUserBundle.es.yml file of the FOSUserBundle,
create a``<your-project>/translations/FOSUserBundle.es.yml`` file.
This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.