How to define ObjectID type column (other than _id)

Issue type:

[x] question [ ] bug report [ ] feature request [ ] documentation issue

Database system/driver:

[ ] cordova [x] mongodb [ ] mssql [ ] mysql / mariadb [ ] oracle [ ] postgres [ ] sqlite [ ] sqljs [ ] react-native

TypeORM version:

[x] latest [ ] @next [ ] 0.x.x (or put your version here)

Steps to reproduce or a small repository showing the problem:

I have an entity :

@Entity()
export class RolePermission implements IRolePermission {
    @ObjectIdColumn() id?: ObjectID;

    @Column()
    @IsNotEmpty()
    roleId: ObjectID;

    @Column()
    @IsNotEmpty()
    permissionId: ObjectID;
}

The code compiles. But when I start my server, this error throws :

> node ./dist/server.js

error:  ColumnTypeUndefinedError: Column type for RolePermission#roleId is not defined and cannot be guessed. Make sure you have turned on an "emitDecoratorMetadata": true option in tsconfig.json. Also make sure you have imported "reflect-metadata" on top of the main entry file in your application (before any entity imported).If you are using JavaScript instead of TypeScript you must explicitly provide a column type.

I have turned on the option in my tsconfig.json and I import reflect-metadata at the top of my file server.ts.

I read the code about the decorator ObjectIdColumn and if I think it used only for primary use case, so it’s not applicable for my need.

Thanks a lot for your help

[pleerock]

you need to install mognodb typings and import ObjectID from mongodb, like this:

import {ObjectID} from "mongodb";

@Entity()
export class RolePermission implements IRolePermission {
    @ObjectIdColumn() id?: ObjectID;

    @Column()
    @IsNotEmpty()
    roleId: ObjectID;

    @Column()
    @IsNotEmpty()
    permissionId: ObjectID;
}

I know this is confusing, and its something we have to resolve.

[Alex0007]

Having two ObjectID from various places is pain