Postgresql 将typescript多对多关系模型数据与
我正在使用sequelize with library,并试图实现以下关系: 小队Postgresql 将typescript多对多关系模型数据与,postgresql,typescript,many-to-many,sequelize.js,Postgresql,Typescript,Many To Many,Sequelize.js,我正在使用sequelize with library,并试图实现以下关系: 小队 @Scopes({ withPlayers: { include: [{model: () => User}] } }) @Table export default class Team extends Model<Team> { @AllowNull(false) @Column name: string; @BelongsToMany(() => U
@Scopes({
withPlayers: {
include: [{model: () => User}]
}
})
@Table
export default class Team extends Model<Team> {
@AllowNull(false)
@Column
name: string;
@BelongsToMany(() => User, () => TeamPlayer)
players: User[];
}
现在有两件事我做不到
1) 我想将TeamPlayer
重命名为类似“会员”的名称;但不是通过更改类的名称
2) TeamPlayer
的内容不应具有id,但我希望它包含团队的数据,例如:
{
"firstName": "John",
"lastName": "Doe"
"membership": {
"number": 32
}
在上面的类中,我尝试将TeamPlayer
类的作用域设置为仅在TeamMember
包含中包含number
,但没有效果
我曾经让
TeamPlayer
类直接成为team
和player
的成员,但该解决方案为TeamPlayer
类添加了冗余的id
,并且也没有防止团队中的重复成员身份。在这些情况下,我确实可以手动(=在代码中)防止重复,但这并不优雅。我最终解决了这个问题,从TeamPlayer
到User
和Team
,添加了一对多的关系,并通过添加两个带有@ForeignKey
的字段,找到了使teamId
+userId
对唯一的方法,如下所示:
TeamPlayer.ts
@Table
export default class TeamPlayer extends Model<TeamPlayer> {
@BelongsTo(() => Team)
team: Team;
@ForeignKey(() => Team)
@PrimaryKey
@Column
teamId: number;
@BelongsTo(() => User)
user: User;
@ForeignKey(() => User)
@PrimaryKey
@Column
userId: number;
@Column
number: number;
}
@Table
export default class User extends Model<User> {
@AllowNull(false)
@Column
firstName: string;
@AllowNull(false)
@Column
lastName: string;
@HasMany(() => TeamPlayer)
teams: TeamPlayer[];
}
export default class Team extends Model<Team> {
@AllowNull(false)
@Column
name: string;
@HasMany(() => TeamPlayer)
players: TeamPlayer[];
}
@表格
导出默认类TeamPlayer扩展模型{
@属于(()=>团队)
团队:团队;
@外键(()=>团队)
@主键
@纵队
teamId:编号;
@BelongsTo(()=>用户)
用户:用户;
@外键(()=>用户)
@主键
@纵队
userId:number;
@纵队
编号:编号;
}
User.ts
@Table
export default class TeamPlayer extends Model<TeamPlayer> {
@BelongsTo(() => Team)
team: Team;
@ForeignKey(() => Team)
@PrimaryKey
@Column
teamId: number;
@BelongsTo(() => User)
user: User;
@ForeignKey(() => User)
@PrimaryKey
@Column
userId: number;
@Column
number: number;
}
@Table
export default class User extends Model<User> {
@AllowNull(false)
@Column
firstName: string;
@AllowNull(false)
@Column
lastName: string;
@HasMany(() => TeamPlayer)
teams: TeamPlayer[];
}
export default class Team extends Model<Team> {
@AllowNull(false)
@Column
name: string;
@HasMany(() => TeamPlayer)
players: TeamPlayer[];
}
@表格
导出默认类用户扩展模型{
@AllowFull(假)
@纵队
名字:字符串;
@AllowFull(假)
@纵队
lastName:string;
@有很多(()=>团队成员)
团队:团队成员[];
}
Team.ts
@Table
export default class TeamPlayer extends Model<TeamPlayer> {
@BelongsTo(() => Team)
team: Team;
@ForeignKey(() => Team)
@PrimaryKey
@Column
teamId: number;
@BelongsTo(() => User)
user: User;
@ForeignKey(() => User)
@PrimaryKey
@Column
userId: number;
@Column
number: number;
}
@Table
export default class User extends Model<User> {
@AllowNull(false)
@Column
firstName: string;
@AllowNull(false)
@Column
lastName: string;
@HasMany(() => TeamPlayer)
teams: TeamPlayer[];
}
export default class Team extends Model<Team> {
@AllowNull(false)
@Column
name: string;
@HasMany(() => TeamPlayer)
players: TeamPlayer[];
}
导出默认类团队扩展模型{
@AllowFull(假)
@纵队
名称:字符串;
@有很多(()=>团队成员)
球员:团队球员[];
}
此解决方案允许我通过作用域控制包含的查询属性,并为我提供适当的对象输出。我通过添加从
TeamPlayer
到User
和Team
的一对多关系来解决此问题,并通过添加两个带有@ForeignKey
的字段,找到了使teamId
+userId
对唯一的方法,如下所示:
TeamPlayer.ts
@Table
export default class TeamPlayer extends Model<TeamPlayer> {
@BelongsTo(() => Team)
team: Team;
@ForeignKey(() => Team)
@PrimaryKey
@Column
teamId: number;
@BelongsTo(() => User)
user: User;
@ForeignKey(() => User)
@PrimaryKey
@Column
userId: number;
@Column
number: number;
}
@Table
export default class User extends Model<User> {
@AllowNull(false)
@Column
firstName: string;
@AllowNull(false)
@Column
lastName: string;
@HasMany(() => TeamPlayer)
teams: TeamPlayer[];
}
export default class Team extends Model<Team> {
@AllowNull(false)
@Column
name: string;
@HasMany(() => TeamPlayer)
players: TeamPlayer[];
}
@表格
导出默认类TeamPlayer扩展模型{
@属于(()=>团队)
团队:团队;
@外键(()=>团队)
@主键
@纵队
teamId:编号;
@BelongsTo(()=>用户)
用户:用户;
@外键(()=>用户)
@主键
@纵队
userId:number;
@纵队
编号:编号;
}
User.ts
@Table
export default class TeamPlayer extends Model<TeamPlayer> {
@BelongsTo(() => Team)
team: Team;
@ForeignKey(() => Team)
@PrimaryKey
@Column
teamId: number;
@BelongsTo(() => User)
user: User;
@ForeignKey(() => User)
@PrimaryKey
@Column
userId: number;
@Column
number: number;
}
@Table
export default class User extends Model<User> {
@AllowNull(false)
@Column
firstName: string;
@AllowNull(false)
@Column
lastName: string;
@HasMany(() => TeamPlayer)
teams: TeamPlayer[];
}
export default class Team extends Model<Team> {
@AllowNull(false)
@Column
name: string;
@HasMany(() => TeamPlayer)
players: TeamPlayer[];
}
@表格
导出默认类用户扩展模型{
@AllowFull(假)
@纵队
名字:字符串;
@AllowFull(假)
@纵队
lastName:string;
@有很多(()=>团队成员)
团队:团队成员[];
}
Team.ts
@Table
export default class TeamPlayer extends Model<TeamPlayer> {
@BelongsTo(() => Team)
team: Team;
@ForeignKey(() => Team)
@PrimaryKey
@Column
teamId: number;
@BelongsTo(() => User)
user: User;
@ForeignKey(() => User)
@PrimaryKey
@Column
userId: number;
@Column
number: number;
}
@Table
export default class User extends Model<User> {
@AllowNull(false)
@Column
firstName: string;
@AllowNull(false)
@Column
lastName: string;
@HasMany(() => TeamPlayer)
teams: TeamPlayer[];
}
export default class Team extends Model<Team> {
@AllowNull(false)
@Column
name: string;
@HasMany(() => TeamPlayer)
players: TeamPlayer[];
}
导出默认类团队扩展模型{
@AllowFull(假)
@纵队
名称:字符串;
@有很多(()=>团队成员)
球员:团队球员[];
}
这个解决方案允许我通过作用域控制包含的查询属性,并提供适当的对象输出