更新json服务器中的数据

Question

我只想更新json服务器中的名称，但是当我使用updateName()时，除了id和更新的名称之外，对象的所有详细信息都会被删除。

 updateName(id: string, name: string): Observable<any> {
    const shipmentUrl = `${this.url}/${id}`;
    return this.http.put<any>(shipmentUrl, {
      name: name,
    });

updateName之前的对象

{
    "id": "S1000",
    "name": "T-shirts(Summer2018) from Shanghai to Hamburg",
    "cargo": [
      {
        "type": "Fabric",
        "description": "1000 Blue T-shirts",
        "volume": "2"
      },
      {
        "type": "Fabric",
        "description": "2000 Green T-shirts",
        "volume": "3"
      }
    ],
    "mode": "sea",
    "type": "FCL",
    "destination": "Saarbrücker Str. 38, 10405 Berlin",
    "origin": "Shanghai Port",
    "services": [
      {
        "type": "customs"
      }
    ],
    "total": "1000",
    "status": "ACTIVE",
    "userId": "U1000"
  },

updateName之后的对象

{ "name": "shoes", "id": "S1000" },

Answer 1

如果您的json服务器是一个rest服务器，并且您只想更改一个属性，那么您应该尝试PATCH request，而不是PUT。PUT更新了整个对象，PATCH只改变了前面提到的字段。