How to handle errors when using Templ (SSR)

[pidanou]

Hi guys, I was wondering what would be the best approach for using the centralized error handling approach when working with a server that both serves HTML and JSON over HTTP.

My stack is Go+Templ+Echo. The custom error handler works fine on the JSON part as I can do stuff like:

func buildCustomErrorHandler(logsService *services.LogsService) echo.HTTPErrorHandler {
	return func(err error, c echo.Context) {
		customErr, ok := err.(*types.CustomHTTPError)
		if customErr == nil {
			return
		}
		if !ok {
			customErr = &types.CustomHTTPError{
				StatusCode: http.StatusInternalServerError,
				Severity:   "critical",
				Message:    "Unexpected error",
			}
		}
		timestamp := time.Now().Unix()
		err = logsService.AddLog(timestamp, customErr.Err.Error(), customErr.Severity)
		if err != nil {
			fmt.Println(err)
		}
		c.JSON(customErr.StatusCode, map[string]string{"message": customErr.Message})
	}
}

I just catch all the errors after the handlers, either there are no errors and I do nothing, or there is an error, I store it and send a response.

When using Templ, i do:

	if err != nil {
		return render(c, templates.Index("some stuff"))
	}

I don't really care about the error from the render function.

For now if there is a business error, since the render function rarely throws any error, I never log anything.

How should i manage this?