Concrete type isn't written down in table inheritance #2544
Description
Issue type:
[X] question
[X] bug report
Database system/driver:
[X] postgres
[X] sqlite
TypeORM version:
[X] 0.2.7 (or put your version here)
Steps to reproduce or a small repository showing the problem:
Maybe I'm doing something wrong; when I create a polymorphic container and save, writing down the entities the type written down for each entity is the supertype not the concrete type. Here's a snippet to reproduce, I also tried postgres with the same result
import {
ChildEntity, Column, createConnection, Entity, ManyToOne, OneToMany, PrimaryGeneratedColumn, TableInheritance
} from 'typeorm'
@Entity()
export class ContainerOfThings {
constructor(things?: Thing[]) {
this.things = things
}
@PrimaryGeneratedColumn()
private id: number
@OneToMany(() => Thing, thing => thing.container, {cascade: ['insert', 'remove']})
things: Thing[]
}
@Entity()
@TableInheritance({column: {type: 'varchar', name: 'type'}})
export abstract class Thing {
@PrimaryGeneratedColumn()
private id: number
@ManyToOne(() => ContainerOfThings, c => c.things)
container: ContainerOfThings
}
@ChildEntity()
export class ParticularThing extends Thing {
constructor(foo: string = 'foo') {
super()
this.foo = foo
}
@Column({type: 'varchar'})
foo: string
}
describe('class inheritance', () => {
it('should write down type', async () => {
const connection = await createConnection({
synchronize: true,
type: 'sqlite',
database: 'inheritance-test',
logging: true,
entities: [ContainerOfThings, Thing, ParticularThing]
})
await connection.transaction(async em => {
await em.getRepository(ContainerOfThings).save(new ContainerOfThings([
new ParticularThing('bar'), new ParticularThing('baz'), new ParticularThing()
]))
})
})
})If you look at the logs and also inspect the database you'll see it's written down Thing as type not ParticularThing