bad request response

Author: kapv89

go/samples/http/todos/controller.go

@@ -64,7 +64,7 @@ func (c *TodosController) ActionInsert(w http.ResponseWriter, r *http.Request, p
 	var dto TodoDTO
 	err := json.NewDecoder(r.Body).Decode(&dto)
 	if err != nil {
-		writeServerErrorResponse(w, "parsing body failed")
+		writeBadRequestResponse(w, "parsing body failed")
 		return
 	}
 
@@ -144,7 +144,7 @@ func (c *TodosController) ActionUpdate(w http.ResponseWriter, r *http.Request, p
 	var dto TodoDTO
 	err := json.NewDecoder(r.Body).Decode(&dto)
 	if err != nil {
-		writeServerErrorResponse(w, "parsing body failed")
+		writeBadRequestResponse(w, "parsing body failed")
 		return
 	}
 
@@ -254,3 +254,20 @@ func writeNotFoundResponse(w http.ResponseWriter) {
 	w.Write(resJson)
 	return
 }
+
+func writeBadRequestResponse(w http.ResponseWriter, reason string) {
+	w.WriteHeader(http.StatusBadRequest)
+	w.Header().Set("Content-Type", "application/json")
+
+	res := make(map[string]string)
+	res["msg"] = "bad request"
+	res["reason"] = reason
+
+	resJson, err := json.Marshal(res)
+	if err != nil {
+		log.Fatalf("error: json marshall: %v", res)
+	}
+
+	w.Write(resJson)
+	return
+}