Save Button AddCustomer fixed

Gui/AddContact.qml

@@ -11,6 +11,8 @@ GridLayout
     columns: 2
     rowSpacing: 9
     visible: false
+    property alias fname: firstname
+    property alias lname: lastname
 
     Label
     {
@@ -35,6 +37,7 @@ GridLayout
         property string name: "firstname"
         id: firstname
         Layout.fillWidth: true
+        onTextChanged: checkFields()
     }
 
     Label
@@ -47,6 +50,7 @@ GridLayout
         property string name: "lastname"
         id: lastname
         Layout.fillWidth: true
+        onTextChanged: checkFields()
     }
     Label
     {
@@ -146,6 +150,17 @@ GridLayout
         Layout.fillWidth: true
         editable: false
         model: ["Nein", "Ja"]
+    }
 
+    function checkContactField()
+    {
+        if (!firstname.text.trim() || !lastname.text.trim())
+        {
+            return false
+        }
+        else
+        {
+            return true
+        }
     }
 }