db element from front

db-api.ts

.post(upload.array(), function (req, res) {
        let elem = new AnatomyElement();
        let bodyElement = req.body.element;
        elem.id = bodyElement.id;
        elem.name = bodyElement.name;
        elem.description = bodyElement.description;
        elem.x = bodyElement.x;
        elem.y = bodyElement.y;
        elementService.createElement(elem);
        res.send("post");
    });

element.service.ts

post(element: AnatomyElement): void {
  this.http
       .post(this.URL, { element })
  //...
}

te klamerki w { element } opakowuja JSONa i dlatego trzeba uzywac req.body.element zamist bezpośrednio