我正在将 NestJS 与 TypeORM 结合使用,并尝试保存用户与消息的对话。我将对话实体上的消息字段设置为级联:真。但是当我尝试这段代码时:
const user3: User = { login: 'admin', createdBy: 'system', lastModifiedBy: 'system' };
const user4: User = { login: 'user', createdBy: 'system', lastModifiedBy: 'system' };
const message1: Message = { content: 'Hello How are you? ', createdBy: user3.login, lastModifiedBy: user3.login };
const conversation1: Conversation = { sender: user3, reciever: user4, messages: [message1] };
getConnection().getRepository(Conversation).save(conversation1);
它创建这个查询:
INSERT INTO "message"("id", "createdBy", "createdDate", "lastModifiedBy", "lastModifiedDate", "content", "conversationSenderId", "conversationRecieverId", "conversationDate") VALUES (?, ?, datetime('now'), ?, datetime('now'), ?, ?, ?, ?)
-- PARAMETERS: ["67348880-6897-47cb-92ef-5f66ffb2e88c","admin","admin","Hello How are you? ","b2420445-c8ee-4080-86b3-98ab12ef576b","09f3672d-9b2f-4f68-b47e-a7ca5d806ec6","2019-10-24 14:41:40.000"]
出现此错误:
{ [Error: SQLITE_CONSTRAINT: FOREIGN KEY constraint failed] errno: 19, code: 'SQLITE_CONSTRAINT' }
我可以看到这是消息表的外键的问题,但我无法修复它,因为它是处理创建的 TypeORM 库,而不是我。
我在互联网上搜索(文档、github、stackoverflow)没有成功。
我认为这是 TypeORM 库中的错误,但我是新手,所以我更喜欢询问我是否做错了什么
这是我的实体:
export abstract class BaseEntity {
@ObjectIdColumn()
@PrimaryGeneratedColumn('uuid')
id?: string;
@Column()
createdBy?: string;
@CreateDateColumn()
createdDate?: Date;
@Column()
lastModifiedBy?: string;
@UpdateDateColumn()
lastModifiedDate?: Date;
}
@Entity('user')
export class User extends BaseEntity {
@Column()
login?: string;
@OneToMany(type => Conversation, conversation => conversation.sender)
sentConversations?: Conversation[];
@OneToMany(type => Conversation, conversation => conversation.reciever)
recievedConversations?: Conversation[];
}
@Entity()
export class Conversation {
@PrimaryColumn()
senderId?: string;
@PrimaryColumn()
recieverId?: string;
@CreateDateColumn({ primary: true })
date?: Date;
@OneToMany(type => Message, message => message.conversation, { cascade: true })
messages: Message[];
@ManyToOne(type => User, user => user.sentConversations)
@JoinColumn({ name: 'senderId' })
sender?: User;
@ManyToOne(type => User, user => user.recievedConversations)
@JoinColumn({ name: 'recieverId' })
reciever?: User;
}
@Entity('message')
export class Message extends BaseEntity {
@Column({ length: 10000 })
content: string;
@ManyToOne(type => Conversation, conversation => conversation.messages)
conversation?: Conversation;
}
在此存储库中,您将能够重现该错误:https://github.com/youtix/nest-typerorm-test https://github.com/youtix/nest-typerorm-test