所以，我现在正在学习 Angular，并尝试做一个 CRUD 应用程序。几乎一切正常，除了尝试使用 ID 获取数据时，我可以访问 component.ts 文件中的所有数据，但同样不会呈现到 html 文件中。这是我尝试过的：-

edit-to.component.ts

export class EditTodoComponent implements OnInit {

private tid: number = 0;

  public Todo:TodoModel= null ;
  public desc:string='';
  public title:string='';
  public id:number;

  constructor(private route: ActivatedRoute, private http:HttpClient) { }

  ngOnInit(): void {
    this.route.paramMap.subscribe(all_params =>{
      this.tid = parseInt(all_params.get('id'))
      //console.log( all_params.get('id'))
      //console.log( this.tid );
    });

    this.getTodoFromId(this.tid)


  }

   getTodoFromId(id){
    //console.log("id="+id)
     this.http.get<{data: any}>('http://localhost:3000/api/todos/get_todo_from_id/'+id).subscribe((data) =>{
      console.log("response in angular= \n");
      this.Todo = data[0]
      

      console.log(this.Todo.todo_title) //-> This one works

}
editOnSubmit(form:NgForm){
  //something here
}

edit-todo.component.html

 

    

      
      

        Title

          //-> This one does not work.

      
      

        Description
        
      

      Edit To Do