learning_cloud_native_go.12.app.app.bookHandler.go

import "myapp/util/validator"

func (app *App) HandleCreateBook(w http.ResponseWriter, r *http.Request) {

  	// after create form from decoding request Body
  
  	if err := app.validator.Struct(form); err != nil {
		app.logger.Warn().Err(err).Msg("")

		resp := validator.ToErrResponse(err)
		if resp == nil {
			w.WriteHeader(http.StatusInternalServerError)
			fmt.Fprintf(w, `{"error": "%v"}`, appErrFormErrResponseFailure)
			return
		}

		respBody, err := json.Marshal(resp)
		if err != nil {
			app.logger.Warn().Err(err).Msg("")

			w.WriteHeader(http.StatusInternalServerError)
			fmt.Fprintf(w, `{"error": "%v"}`, appErrJsonCreationFailure)
			return
		}

		w.WriteHeader(http.StatusUnprocessableEntity)
		w.Write(respBody)
		return
	}
  
  	// ...
}


func (app *App) HandleUpdateBook(w http.ResponseWriter, r *http.Request) {
	
	// after create form from decoding request Body
	
	if err := app.validator.Struct(form); err != nil {
		app.logger.Warn().Err(err).Msg("")

		resp := validator.ToErrResponse(err)
		if resp == nil {
			w.WriteHeader(http.StatusInternalServerError)
			fmt.Fprintf(w, `{"error": "%v"}`, appErrFormErrResponseFailure)
			return
		}

		respBody, err := json.Marshal(resp)
		if err != nil {
			app.logger.Warn().Err(err).Msg("")

			w.WriteHeader(http.StatusInternalServerError)
			fmt.Fprintf(w, `{"error": "%v"}`, appErrJsonCreationFailure)
			return
		}

		w.WriteHeader(http.StatusUnprocessableEntity)
		w.Write(respBody)
		return
	}
	
	// ...
}