Updating eager loaded relations fails

[cloudratha]

It seems that there is a bug with Typeorm where updating a FK manually while the relation property is loaded causes multiple assignments to the join column. I.e. eager loaded relations: typeorm/typeorm#2651

I'm not sure if it's a safe solution but I found deleting the property from the instance before calling save does the trick.
I've only tested this on a OneToOne relation so not sure if it's the correct solution.

NB: setting the relation property to null doesn't seem to be enough, and needs to be off the instance.

Resource.ts

public async update(pk, params: any = {}): Promise<ParamsType>
    {
        params = this.prepareParamsBeforeSave(params);
        const instance = await this.model.findOne(pk);
        if(instance)
        {
            for(const p in params) {
                instance[p] = params[p];

                const property = this.property(p);
                if (property.type() === "reference") {
                    delete instance[property.column.relationMetadata.propertyName];
                }
            }
            await this.validate(instance);
            await instance.save();
            return instance;
        }

        throw new Error("Instance not found.");
    }