Symfony 1.4解决完整性约束违规所需的原则架构帮助

Question

目标：当用户被删除时，UserCategory中用户的所有条目也应该被删除。

的模式：

User: 
    actAs: { Timestampable: ~ } 
    columns: 
    first_name: { type: string(255) } 
    name: { type: string(255) } 
    company: { type: string(255) } 
    email: { type: string(255) } 
    phone: { type: string(255) } 
    language_id: { type: integer, notnull: true } 
    token: { type: string(255) } 
    activated: { type: boolean, default: false } 
    relations: 
    Categories: 
     class: Category 
     local: user_id 
     foreign: category_id 
     refClass: UserCategory 
     type: many 

UserCategory: 
    actAs: { Timestampable: ~ } 
    columns: 
    user_id: { type: integer, notnull: true } 
    category_id:  { type: integer, notnull: true } 

Category: 
    actAs: { Timestampable: ~ } 
    columns: 
    language_id: { type: integer, notnull: true } 
    name: { type: string(255), notnull: true, unique: false } 
    revision: { type: integer, notnull: false } 
    icon:  { type: string(255) } 
    relations: 
    User: 
     class: User 
     local: category_id 
     foreign: user_id 
     refClass: UserCategory 
     type: many 

会发生什么：

SQLSTATE [23000]：完整性约束违规：1451无法删除或更新父行：外键约束失败（testtableuser_category ，CONSTRAINT user_category_user_id_user_id FOREIGN KEY（user_id）参考文献user（id））

Answer 1

像greg0ire said，为UserCategory定义一个级联做了这项工作。它完全错过了关系块：

UserCategory: 
    actAs: { Timestampable: ~ } 
    columns: 
    user_id: { type: integer, notnull: true } 
    category_id:  { type: integer, notnull: true } 
    relations: 
    User: {onDelete: CASCADE, local: user_id, foreign: id, foreignAlias: Users} 
    Category: {onDelete: CASCADE, local: category_id, foreign: id, foreignAlias: Categories} 

Answer 2

阅读本§ of the doctrine documentation并挑选最适合你的应用程序级级联和数据库级级联

Answer 3

你需要在你的关系定义级联操作的解决方案。请参阅Foreign Key's onDelete for dummies文章（不仅适用于傻瓜），并以教条为例。