Skip to main content

Error handling

Error handling is a crucial part of any application. It is important to handle errors gracefully and provide meaningful feedback to the user. In this guide, we will cover how to handle errors in a Fuego application.

Error handling in Fuego​

Fuego controllers returns a value and an error. If the error is not nil, it means that an error occurred while processing the request. The error will be returned to the client as a JSON response.

The error type returned as JSON is fuego.HTTPError. It has a Status and a Info field. The Status field is an integer that represents the error code. The Info field is a string that contains a human-readable error message.

If your error implements Status() int and Info() methods, the error will include the status code and the error message in the fuego.HTTPError response.

type MyCustomError struct {
	Status int
	Message string
}

func (e MyCustomError) Status() int {
	return e.Status
}

Default errors​

Fuego provides a set of default errors that you can use in your application.

  • fuego.BadRequestError: 400 Bad Request
  • fuego.UnauthorizedError: 401 Unauthorized
  • fuego.ForbiddenError: 403 Forbidden
  • fuego.NotFoundError: 404 Not Found
  • fuego.ConflictError: 409 Conflict
  • fuego.InternalServerError: 500 Internal Server Error