在 ZD18B8624A0F5F5721ZDDFC82 框架中讀取 db 或 rest api object 的最佳方法是什么？

Question

I am experienced java developer and recently working on angular as well, most of the time i use observable<any> as a return type of my http api method or db read method but what is the best way to do this to avoid [ object, object] read error或object is undefined 。

我會很感激你的幫助。 謝謝

 getComments(): Observable<any> {
    return this.http.get(environment.api + '/payments/6');
  }

  addComments(body): Observable<any> {
    console.log(body);
    return this.http.post(environment.api + '/payments/account', body);
  } ```

Answer 1

在 Angular 中，通過插值，Angular 執行以下任務：

1. 計算雙花括號中的所有表達式。
2. 將表達式結果轉換為字符串。
3. 將結果鏈接到任何相鄰的文字字符串。
4. 將組合分配給元素或指令屬性

Your problem is with section two, when you pass an object to interpolation, Angular converts object to string and the result will be [object Object] , so you have to pass some primitives or use json pipe to interpolate correctly.