typeorm-hacks

This package currently is a minimal implementation to meet special usages of typeorm. For now there is no neat hack for Column decorator at runtime.

Examples

1. Store entities in different tables or different dbs while using the same class type for entity declaration

const config = {
    "host": "localhost",
    "port": 3306,
    "username": "test",
    "password": "",
    "database": "test"
};

class TestClass1 {
    @PrimaryColumn()
    id: number;
}

class TestClass2 {
    @PrimaryColumn()
    id: number;

    @Column()
    name: string;
}

// same table def in different dbs
const test1 = async () => {
    const TC1 = decorateClass(TestClass1, HackedEntity<TestClass1>({
        name: 'test',
        database: 'qa'
    }));
    const TC2 = decorateClass(TestClass1, HackedEntity<TestClass1>({
        name: 'test',
        database: 'stage'
    }));
    const connection = await createConnection({
        ...config,
        type: 'mysql',
        entities: [TC1, TC2],
        logging: false
    });
    const x = new TestClass1();
    await connection.getRepository(TC1).insert(x);
    await connection.getRepository(TC2).insert(x);
    await connection.close();
};

// different table in same db
const test2 = async () => {
    const TC1 = decorateClass(TestClass2, HackedEntity<TestClass2>({
        name: 'test1',
        database: 'qa'
    }));
    const TC2 = decorateClass(TestClass2, HackedEntity<TestClass2>({
        name: 'test2',
        database: 'qa'
    }));
    const connection = await createConnection({
        ...config,
        type: 'mysql',
        entities: [TC1, TC2],
        logging: false
    });
    const x = new TestClass2();
    x.name = 'test';
    await connection.getRepository(TC1).insert(x);
    await connection.getRepository(TC2).insert(x);
    await connection.close();
};

const test = async () => {
    await test1();
    await test2();
};

test();