asp.net core docker Angular httpclient delete example

In this video we will discuss deleting data on the server using Angular HttpClient service. To issue a DELETE request, we use HttpClient service delete() method.

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In employee.service.ts file, include the following deleteEmployee() method

baseUrl = ' http://localhost:3000/employees';

deleteEmployee(id: number): Observable[void] { return this.httpClient.delete[void](`${this.baseUrl}/${id}`) .pipe(catchError(this.handleError));
}

Code Explanation:
1. deleteEmployee() method takes the ID of the employee to delete as a parameter

2. delete() method does not return anything so we have set the return type to void

3. The URL that is passed as a parameter to the HttpClient delete() method has the ID of the employee to delete

Delete button click event handler is in DisplayEmployeeComponent. So modify deleteEmployee() method in display-employee.component.ts file as shown below.

deleteEmployee() {
this._employeeService.deleteEmployee(this.employee.id).subscribe( () =] console.log(`Employee with ID = ${this.employee.id} Deleted`), (err) =] console.log(err)
);
this.notifyDelete.emit(this.employee.id);
}

The success callback function logs the ID of the deleted employee to the console and the error callback function logs the error to the console.

asp.net core docker Angular httpclient delete example
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Science & Technology	Upload TimePublished on 30 Jul 2018

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