relation not work for react native

[CodingByJerez]

Issue type:

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

Database system/driver:

[ ] cordova
[ ] mongodb
[ ] mssql
[ ] mysql / mariadb
[ ] oracle
[ ] postgres
[ ] cockroachdb
[ ] sqlite
[ ] sqljs
[*] react-native
[ ] expo

TypeORM version:

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

TypeORM version:
[*] sqlite (react-native-sqlite-storage)

@Entity()
export class Test1Entity{

    @PrimaryGeneratedColumn()
    public id!:number;

    @Column({type: 'varchar'})
    public label!:string;

    @OneToOne(() => Test2Entity, {cascade: true})
    @JoinColumn()
    public relation!:Test2Entity;

}

@Entity()
export class Test2Entity{

    @PrimaryGeneratedColumn()
    public id!:number;

    @Column({type: 'varchar'})
    public label!:string;

}

    try{
        const test2Entity = new Test2Entity();
        test2Entity.label = 'label2';

        const test1Entity = new Test1Entity();
        test1Entity.label = 'label1';
        test1Entity.relation = test2Entity;

        const r = await getConnection().manager.save(test1Entity);

    }catch(e){

        console.log(e); // return msg: Right-hand side of 'instanceof' is not an object

    }

relation not work @joincolumn() return error:

TypeError: Right-hand side of 'instanceof' is not an object
    at Function.OrmUtils.mergeDeep (OrmUtils.js:81)
    at Subject.js:208
    at Array.reduce (<anonymous>)
    at Subject.createValueSetAndPopChangeMap (Subject.js:165)
    at SubjectExecutor.js:270
    at Array.forEach (<anonymous>)
    at SubjectExecutor.<anonymous> (SubjectExecutor.js:257)
    at step (tslib.js:141)
    at Object.next (tslib.js:122)
    at tslib.js:115

If anyone knows a solution to this problem thank you in advance :)
because I did not find any solution other than changing DB for realm :(

[hesyifei]

Maybe this is related to #6142?

---

Update: I tried using master (https://github.com/typeorm/typeorm/tree/defa9bced0b5d1258e4f50d5c590978e6d3324d3) (which has #6145), and it seems to fix the problem.

[Thomascogez]

Hey @hesyifei, is it possible to explain how did you manage to fix that problem, I'm currently facing the same problem

[hesyifei]

Hey @hesyifei, is it possible to explain how did you manage to fix that problem, I'm currently facing the same problem

I built a fresh copy from master (ref: https://github.com/typeorm/typeorm/blob/master/DEVELOPER.md) and replaced the typeorm folder in node_modules with the built build/package directory.

Another thing I think you can try is to just use an older version of typeorm in package.json, a version before that problematic commit.

[Thomascogez]

thank for the answer @hesyifei , I was able to resolve this by using @ next version (Be aware if your are using this version relations has some changes )

[imnotjames]

Sounds like you're all set here - I'll be closing this as having been resolved but please feel free to reach out if it's still an issue!