An item (with hard coded values) can be send to the server. Added signals for fetching and posting items to be triggered from the UI.

network/servercommunicator.cpp

@@ -32,6 +32,7 @@ void ServerCommunicator::setUrl(const QUrl& url) {
   }
   m_serviceApi->setBaseUrl(url);
   QHttpHeaders authenticationHeaders;
+  authenticationHeaders.append(QHttpHeaders::WellKnownHeader::ContentType, "application/json");
   m_serviceApi->setCommonHeaders(authenticationHeaders);
   emit urlChanged();
 }
@@ -58,3 +59,34 @@ void ServerCommunicator::fetchItems() {
     }
   });
 }
+
+void ServerCommunicator::postItems() {
+  QJsonObject itemObject;
+  itemObject["name"]        = "Post test 1";
+  itemObject["description"] = "Post description 1";
+  itemObject["info"]        = "Post info 1";
+  itemObject["amount"]      = 1;
+  itemObject["factor"]      = 5.3;
+
+  QJsonObject rootObject;
+  rootObject.insert("item", itemObject);
+
+  QJsonDocument jsonDoc(rootObject);
+  QByteArray jsonData = jsonDoc.toJson();
+
+  QNetworkReply* reply = m_restManager->post(m_serviceApi->createRequest(ROUTE_ITEMS), jsonData);
+
+  QObject::connect(reply, &QNetworkReply::finished, [=]() {
+    if (reply->error() == QNetworkReply::NoError) {
+      QByteArray responseData = reply->readAll();
+      const QString message   = QString("POST successful! Response: %1").arg(responseData);
+      qInfo() << message;
+      emit postRequestSuccessful(message);
+    } else {
+      const QString message = QString("Error: %1").arg(reply->errorString());
+      qDebug() << message;
+      emit postRequestFailure(message);
+    }
+    reply->deleteLater();
+  });
+}