chill-bundles/Resources/config/validation.yml

Chill\PersonBundle\Entity\Person:
    properties:
        firstName:
              - NotBlank: 
                  groups: [general, creation]
              - Length: 
                  min: 2
                  max: 255
                  minMessage: 'This name is too short. It must containt {{ limit }} chars'
                  maxMessage: 'This name is too long. It must containt {{ limit }} chars'
                  groups: [general, creation]
        lastName:
              - NotBlank:
                  groups: [general, creation]
              - Length: 
                  min: 2
                  max: 255
                  minMessage: 'This name is too short. It must containt {{ limit }} chars'
                  maxMessage: 'This name is too long. It must containt {{ limit }} chars'
                  groups: [general, creation]
        birthdate:
              - Date: 
                  message: 'Birthdate not valid'
                  groups: [general, creation]
        gender:
               - NotNull:
                  groups: [general, creation]
        accompanyingPeriods:
              - Valid:
                  traverse: true
    constraints:
          - Callback:
              methods: [isAccompanyingPeriodValid]
              groups: [accompanying_period_consistent]

Chill\PersonBundle\Entity\AccompanyingPeriod:
    properties:
        date_opening:
              - Date: 
                  message: 'Opening date is not valid'
              - NotNull: 
                  message: 'Opening date can not be null'
        date_closing:
              - Date: 
                  message: 'Closing date is not valid'
              - NotNull:
                  message: 'Closing date can not be null'
                  groups: [closed]
    constraints:
          - Callback:
              methods: [isDateConsistent]