如何使用symfony2原则在表中添加列

Question

我正在尝试使用yml格式将列添加到现有表中。将新列条目添加到.yml文件中，并运行命令生成实体

php app/console doctrine:generate:entities PLibBundle:Contact

通过运行该命令，得到一个错误

这是我的yml文件：

Application\PLibBundle\Entity\Contact:
  type: entity
  table: null
  fields:
    id:
      type: integer
      length: null
      precision: 0
      scale: 0
      nullable: false
      unique: false
      id: true
      generator:
        strategy: IDENTITY
    firstName:
      type: string
      length: 255
      precision: 0
      scale: 0
      nullable: false
      unique: false
    lastName:
      type: string
      length: 255
      precision: 0
      scale: 0
      nullable: false
      unique: false
    companyText:
      type: string
      length: 255
      precision: 0
      scale: 0
      nullable: true
      unique: false
    email:
      type: string
      length: 255
      precision: 0
      scale: 0
      nullable: true
      unique: true
    hasCustomHeadshot:
      type: boolean
      length: null
      precision: 0
      scale: 0
      nullable: false
      unique: false
    createdOn:
      type: datetime
      length: null
      precision: 0
      scale: 0
      nullable: false
      unique: false
    updatedOn:
      type: datetime
      length: null
      precision: 0
      scale: 0
      nullable: false
      unique: false
  oneToOne:
    address:
      targetEntity: Application\PLibBundle\Entity\Address
      cascade:
        - remove
        - persist
      mappedBy: null
      inversedBy: null
      joinColumns:
        addressId:
          referencedColumnName: id
      orphanRemoval: true
  oneToMany:
    phoneNumberAssociations:
      targetEntity: Application\PLibBundle\Entity\ContactPhoneNumberAssociation
      cascade:
        - remove
        - persist
      mappedBy: contact
      inversedBy: null
      orphanRemoval: true
      orderBy: null
    subscriptionAssociations:
      targetEntity: Application\PLibBundle\Entity\ContactSubscriptionAssociation
      cascade:
        - remove
        - persist
      mappedBy: contact
      inversedBy: null
      orphanRemoval: true
      orderBy: null
  manyToOne:
    company:
      targetEntity: Application\PLibBundle\Entity\Company
      cascade: {  }
      mappedBy: null
      inversedBy: null
      joinColumns:
        companyId:
          referencedColumnName: id
      orphanRemoval: false
  lifecycleCallbacks:
    prePersist:
      - beforePersist
    preUpdate:
      - beforeUpdate

Answer 1

异常消息基本上解决了这个谜团，你有类似的东西吗？

Contact:
  type: entity
  id:
    id:
      type: integer
      generator:
        strategy: AUTO
  fields:
    name:
        type: string
        length: 100