FOSUserBundle - Validation for username, password or email fields

You can overwrite the default settings by creating a new validation file in your bundle. This is bundle inheritance. Just copy (not cut).

FOSUserBundle/Resources/config/validation/orm.xml to YourBundle/Resources/config/validation/orm.xml.

(couchdb.xml, mongodb.xml, propel.xml respectively)

and adjust it to your needs. Change the class name, then add your constraints:

<class name="Vendor\YourBundle\Model\User">    <property name="username">        <!-- minimum length for username -->        <constraint name="MinLength">            <option name="limit">3</option>            <option name="message">Your name must have at least {{ limit }} characters.</option>        </constraint>        <!-- custom constraint -->        <constraint name="Acme\DemoBundle\Validator\Constraints\ContainsAlphanumeric" />    </property>    <constraint name="Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity">        <option name="fields">usernameCanonical</option>        <option name="errorPath">username</option>        <option name="message">fos_user.username.already_used</option>        <option name="groups">            <value>Registration</value>            <value>Profile</value>        </option>    </constraint>    <constraint name="Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity">        <option name="fields">emailCanonical</option>        <option name="errorPath">email</option>        <option name="message">fos_user.email.already_used</option>        <option name="groups">            <value>Registration</value>            <value>Profile</value>        </option>    </constraint></class>

Read more about which constraints are available (and how to use them with xml configuration ) in the Validation Constraints Reference.

The easiest thing for me was to overwrite the property in my custom entity and change the settings for the assertion:

<?phpnamespace YourBundle\Entity;use Symfony\Component\Validator\Constraints as Assert;class User extends \FOS\UserBundle\Model\User{    // ...    /**    * @Assert\Length(    *     min=8,    *     max=4096,    *     minMessage="user.password.short",    *     groups={"Profile", "ResetPassword", "Registration", "ChangePassword"}    * )    */    protected $plainPassword;    // ...}

Don't forget the validation groups.

Heads up: user.password.short translation is in the validators Domain of your bundle in YourBundle\Resources\translations\.

Example:

# validators.en.ymluser:    password:        short: Password must be at least 8 characters long.

Don't know if this is version specific; I'm using symfony v2.8.3 and fosuser ~2.0@dev (a39d000).

In YML you would do it like this:

# src/Acme/ProjectBundle/Resources/config/validation.ymlAcme\ProjectBundle\Entity\User:    properties:        email:            - Length:                min: 5                minMessage: "Your email must have at least {{ limit }} characters."                max: 255                maxMessage: "Your email is too long."            - NotBlank:                message: "Please enter an email"        username:            - Length:                min: 6                minMessage: "Your username must have at least {{ limit }} characters."                max: 255                maxMessage: "Your username is too long."            - NotBlank:                message: "Please enter an username"        plainPassword:            - Length:                min: 8                minMessage: "Your password must have at least {{ limit }} characters."                max: 255                maxMessage: "Your password is too long."            - NotBlank:                message: "Please enter a password"Acme\ProjectBundle\Form\Model\ChangePassword:    properties:        new:            - Length:                min: 8                minMessage: "Your password must have at least {{ limit }} characters."                max: 255                maxMessage: "Your password is too long."            - NotBlank:                message: "Please enter a password"Acme\ProjectBundle\Form\Model\ResetPassword:    properties:        new:            - Length:                min: 8                minMessage: "Your password must have at least {{ limit }} characters."                max: 255                maxMessage: "Your password is too long."            - NotBlank:                message: "Please enter a password"