While implementing a delete feature in a CRUD Angular application, why am I encountering a compilation error stating that the property _id does not exist in the array?

Encountering an error while working on a MEAN app with Angular, as the compiler does not seem to accept direct manipulation of the array using the this keyword.

Here is an example where the code triggers a compilation error:

deleteTodo(todo) {
    this.todoService.deleteTodo(todo._id)
        .map(res => res.json)
        .subscribe( data => {
            for(var i=0 ; i < this.todos.length; i++) {
                if(this.todos[i]._id == todo._id)
                    this.todos.splice(i, 1);
            }
    });
}

The error message states that _id is not defined in Todo type

Contents of Todo.ts file:

export class Todo{
  text: string;
  isCompleted: boolean;
}

Refer to the code in todos.component.ts by visiting: https://github.com/ajayns/angular-projects/blob/master/mean-todo/src/app/todos/todos.component.ts

Answer №1

class Task{
  _id: string;
  description: string;
  completed: boolean;
}

Don't forget to include the _id attribute in your Todo class.

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