Group.mongodb.xml

<?xml version="1.0" encoding="UTF-8"?>
<doctrine-mongo-mapping xmlns="http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping"
                        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                        xsi:schemaLocation="http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping
                        http://doctrine-project.org/schemas/odm/doctrine-mongo-mapping.xsd">

    <mapped-superclass name="FOS\UserBundle\Model\Group" collection="fos_user_group">

        <field name="name" type="string" />

        <field name="roles" type="collection" />

        <indexes>
            <index>
                <key name="name" order="asc" />
                <option name="safe" value="true" />
                <option name="unique" value="true" />
            </index>
        </indexes>

    </mapped-superclass>

</doctrine-mongo-mapping>