TypeORM OneToOne 关系级联删除不起作用

Question

我正在构建一个简单的发票 API。

我有两个类Invoice和Address，Invoice有两个与Address相关的字段：senderAddress和clientAddress

我希望能够删除 Invoice 并自动删除 senderAddress 和 clientAddress。

我尝试了很多东西，比如将onDelete and Cascade 添加到Address OneToOne，它们不会被删除。

export class Invoice {
    @OneToOne(() => Address, (senderAddress) => senderAddress.invoice, {
        cascade: true,
        onDelete: 'CASCADE',
        eager: true,
    })
    @JoinColumn()
    senderAddress: Address;

    @OneToOne(() => Address, (clientAddress) => clientAddress.invoice, {
        cascade: true,
        onDelete: 'CASCADE',
        eager: true,
    })
    @JoinColumn()
    clientAddress: Address;
}

export class Address {
    @OneToOne(() => Invoice)
    invoice: Invoice;
}

这就是我删除Invoice的方式

async remove(id: number): Promise<Invoice> {
    const invoice = await this.invoiceRepository.findOne(id);
    if (!invoice)
        throw new HttpException('Invoice not found', HttpStatus.NOT_FOUND);

    return await this.invoiceRepository.remove(invoice);
}

这是在生成迁移时生成的：

public async up(queryRunner: QueryRunner): Promise<void> {
        await queryRunner.query(
            `CREATE TABLE \`invoices-app\`.\`invoice\` (\`id\` int NOT NULL AUTO_INCREMENT, \`createdAt\` datetime(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6), \`paymentDue\` datetime NOT NULL, \`description\` varchar(255) NOT NULL, \`paymentTerms\` int NOT NULL, \`clientName\` varchar(255) NOT NULL, \`clientEmail\` varchar(255) NOT NULL, \`status\` varchar(255) NOT NULL, \`total\` int NOT NULL, \`senderAddressId\` int NULL, \`clientAddressId\` int NULL, \`userId\` int NULL, UNIQUE INDEX \`REL_39d5b5b8c9b14ee7d3a28ec6be\` (\`senderAddressId\`), UNIQUE INDEX \`REL_2d58047fd2c36422476e1e1fd3\` (\`clientAddressId\`), PRIMARY KEY (\`id\`)) ENGINE=InnoDB`,
        );

        await queryRunner.query(
            `CREATE TABLE \`invoices-app\`.\`address\` (\`id\` int NOT NULL AUTO_INCREMENT, \`street\` varchar(255) NOT NULL, \`city\` varchar(255) NOT NULL, \`postCode\` varchar(255) NOT NULL, \`country\` varchar(255) NOT NULL, PRIMARY KEY (\`id\`)) ENGINE=InnoDB`,
        );

        await queryRunner.query(
            `ALTER TABLE \`invoices-app\`.\`invoice\` ADD CONSTRAINT \`FK_39d5b5b8c9b14ee7d3a28ec6be3\` FOREIGN KEY (\`senderAddressId\`) REFERENCES \`invoices-app\`.\`address\`(\`id\`) ON DELETE CASCADE ON UPDATE NO ACTION`,
        );

        await queryRunner.query(
            `ALTER TABLE \`invoices-app\`.\`invoice\` ADD CONSTRAINT \`FK_2d58047fd2c36422476e1e1fd36\` FOREIGN KEY (\`clientAddressId\`) REFERENCES \`invoices-app\`.\`address\`(\`id\`) ON DELETE CASCADE ON UPDATE NO ACTION`,
        );
}

这是我的整个 ER 图

Answer 1

您需要在senderAddress 和clientAddress 上指定反面作为第二个参数，如下所示：

export class Invoice {
    @OneToOne(() => Address, 
     senderAddress => senderAddress.invoice, // inverse side
     {
        cascade: ['insert'],
        onDelete: 'CASCADE',
        eager: true,
    })
    @JoinColumn()
    senderAddress: Address;

    @OneToOne(() => Address, 
     clientAddress => clientAddress.invoice, // inverse side
     {
        cascade: ['insert'],
        onDelete: 'CASCADE',
        eager: true,
    })
    @JoinColumn()
    clientAddress: Address;
}