add validation in deliveryaddress

lib/pages/delivery_address/delivery_address_editor.dart

@@ -31,6 +31,7 @@ class _DeliveryAddressEditorState extends State<DeliveryAddressEditor> {
 
   bool _isLoading = false;
   bool _isNew = true;
+  final _deliveryFormKey=GlobalKey<FormState>();
 
   @override
   void initState() {
@@ -60,12 +61,26 @@ class _DeliveryAddressEditorState extends State<DeliveryAddressEditor> {
     final fullName = InputText(
         labelTextKey: 'delivery_address.full_name',
         iconData: MaterialCommunityIcons.account_arrow_left,
-        controller: _nameController);
+        controller: _nameController,
+        autovalidateMode: AutovalidateMode.onUserInteraction,
+        validator: (value) {
+          if(value==null || value.isEmpty){
+            return"Please enter full name";
+          }
+          return null;
+        });
 
     final addressLine1 = InputText(
         labelTextKey: 'delivery_address.address_line1',
         iconData: Icons.location_on,
-        controller: _address1Controller);
+        controller: _address1Controller,
+         autovalidateMode: AutovalidateMode.onUserInteraction,
+        validator: (value) {
+          if(value==null || value.isEmpty){
+            return"Please enter address";
+          }
+          return null;
+        });
 
     final addressLine2 = InputText(
         labelTextKey: 'delivery_address.address_line2',
@@ -75,18 +90,39 @@ class _DeliveryAddressEditorState extends State<DeliveryAddressEditor> {
     final cityBox = InputText(
         labelTextKey: 'delivery_address.city',
         iconData: Icons.location_city,
-        controller: _cityController);
+        controller: _cityController,
+         autovalidateMode: AutovalidateMode.onUserInteraction,
+        validator: (value) {
+          if(value==null || value.isEmpty){
+            return"Please enter city";
+          }
+          return null;
+        });
 
     final regionBox = InputText(
         labelTextKey: 'delivery_address.state_region',
         iconData: Entypo.location,
-        controller: _stateController);
+        controller: _stateController,
+         autovalidateMode: AutovalidateMode.onUserInteraction,
+        validator: (value) {
+          if(value==null || value.isEmpty){
+            return"Please enter state/region";
+          }
+          return null;
+        });
 
     final phoneNumberBox = InputText(
         labelTextKey: 'delivery_address.phonenumber',
         iconData: Icons.phone,
         textInputType: TextInputType.phone,
-        controller: _phoneController);
+        controller: _phoneController,
+         autovalidateMode: AutovalidateMode.onUserInteraction,
+        validator: (value) {
+          if(value==null || value.isEmpty){
+            return"Please enter phone number";
+          }
+          return null;
+        });
 
     final createBtn = fcsButton(
       context,
@@ -128,24 +164,27 @@ class _DeliveryAddressEditorState extends State<DeliveryAddressEditor> {
                       onPressed: _delete)
             ],
           ),
-          body: Padding(
+          body: Form(
-            padding: const EdgeInsets.only(left: 10.0, right: 10),
+            key: _deliveryFormKey,
-            child: ListView(children: <Widget>[
+            child: Padding(
-              fullName,
+              padding: const EdgeInsets.only(left: 10.0, right: 10),
-              SizedBox(height: 5),
+              child: ListView(children: <Widget>[
-              phoneNumberBox,
+                fullName,
-              SizedBox(height: 10),
+                SizedBox(height: 5),
-              addressLine1,
+                phoneNumberBox,
-              SizedBox(height: 5),
+                SizedBox(height: 10),
-              addressLine2,
+                addressLine1,
-              SizedBox(height: 5),
+                SizedBox(height: 5),
-              cityBox,
+                addressLine2,
-              SizedBox(height: 5),
+                SizedBox(height: 5),
-              regionBox,
+                cityBox,
-              SizedBox(height: 5),
+                SizedBox(height: 5),
-              _isNew ? createBtn : updateBtn,
+                regionBox,
-              SizedBox(height: 10)
+                SizedBox(height: 5),
-            ]),
+                _isNew ? createBtn : updateBtn,
+                SizedBox(height: 10)
+              ]),
+            ),
           ),
         ));
   }
@@ -168,23 +207,26 @@ class _DeliveryAddressEditorState extends State<DeliveryAddressEditor> {
   }
 
   Future<bool> _validate(DeliveryAddress deliveryAddress) async {
-    if (deliveryAddress.addressLine1 == "") {
+    if(_deliveryFormKey.currentState!.validate()){
-      await showMsgDialog(context, "Error", "Invalid address line 1!");
       return false;
     }
+    // if (deliveryAddress.addressLine1 == "") {
+    //   await showMsgDialog(context, "Error", "Invalid address line 1!");
+    //   return false;
+    // }
 
-    if (deliveryAddress.city == null) {
+    // if (deliveryAddress.city == null) {
-      await showMsgDialog(context, "Error", "Invalid city!");
+    //   await showMsgDialog(context, "Error", "Invalid city!");
-      return false;
+    //   return false;
-    }
+    // }
-    if (deliveryAddress.state == null) {
+    // if (deliveryAddress.state == null) {
-      await showMsgDialog(context, "Error", "Invalid state!");
+    //   await showMsgDialog(context, "Error", "Invalid state!");
-      return false;
+    //   return false;
-    }
+    // }
-    if (deliveryAddress.phoneNumber == null) {
+    // if (deliveryAddress.phoneNumber == null) {
-      await showMsgDialog(context, "Error", "Invalid phone number!");
+    //   await showMsgDialog(context, "Error", "Invalid phone number!");
-      return false;
+    //   return false;
-    }
+    // }
     return true;
   }
 
@@ -194,6 +236,7 @@ class _DeliveryAddressEditorState extends State<DeliveryAddressEditor> {
     if (!valid) {
       return;
     }
+    
     if (widget.user != null) {
       deliveryAddress.userID = widget.user!.id;
     }