Chill\EventBundle\Entity\Participation:
    properties:
        event: 
            - NotNull: ~
        status:
            - NotNull: ~
        person:
            - NotNull: ~
    constraints:
        - Callback: isConsistent
        
       
Chill\EventBundle\Entity\Event:
    properties:
        name:
            - Length:
                min: 3
                max: 75
                minMessage: The event name must have at least {{ limit }} characters.
                maxMessage: The event name must have maximum {{ limit }} characters.
        type:
            - NotNull: ~
        circle:
            - NotNull: ~
        center:
            - NotNull: ~