File: src/AppBundle/Resources/config/validation.yml

AppBundle\Entity\ImportUser:
  properties:
    firstName:
      - NotBlank: ~
      - Length:
          min: 2
          max: 255
    infix:
      - Length:
          max: 45
    lastName:
      - Length:
          max: 255
    birthDate:
      - Date: ~
    gender:
      - Choice:
          choices:  [m, f]
          message:  Choose a valid gender.
    zipCode:
      - Length:
          max: 32
    houseNumber:
      - Length:
          max: 255

AppBundle\Model\Csv\Data\Path:
  properties:
    path:
      - NotBlank: ~
      - File:
          mimeTypes: [text/csv, text/plain, application/vnd.ms-excel, application/vnd.oasis.opendocument.text, application/vnd.oasis.opendocument.spreadsheet]