mongodbloopbackjsv4l2loopbackloopback4

How to use MongoDB extended operators in Loopback 4?

I'm working with loopback v4 and I need to use the MongoDB $unset extended operator. Documentation on MongoDB connector indirectly states that it can be used (see here) , but I can't find any example/documentation on how is it supposed to be used on my repository, do you have any hints?

Solution

  • According to the documentation, you need to modify the settings in DataSource first.

    xxx.datasource.ts 

    export class XxxDataSource extends juggler.DataSource {
    static dataSourceName = '...';

    constructor() {
        super({
            "name": "...",
            "connector": "mongodb",
            "url": "...",
            "database": "...",
            "allowExtendedOperators": true // <= !!!! default is false
        });
    }
}

    xxx.controller.ts 

    return await this.xxxRepository.updateById(
    "....id....",
    {
        $unset: {
            test: ""
        }
    } as any // <= !!!! you can using `$unset` now, add `as any` to avoid type error
)