Merge pull request 'fix: Enhance contact number validation in organization form' (#43) from Vaibhav_Bug-#452 into main

Reviewed-on: #43

lib/view/auth/request_demo_bottom_sheet.dart

@@ -275,7 +275,21 @@ class _OrganizationFormState extends State<_OrganizationForm> {
  Widget _buildTextField(String fieldName, String label,
     {TextInputType keyboardType = TextInputType.text}) {
   final controller = validator.getController(fieldName);
-    final validatorFunc = validator.getValidation<String>(fieldName);
+  final defaultValidator = validator.getValidation<String>(fieldName);
+
+  // Custom logic for contact number
+  String? Function(String?)? validatorFunc = defaultValidator;
+  if (fieldName == 'contactNumber') {
+    validatorFunc = (value) {
+      if (value == null || value.isEmpty) {
+        return 'Contact number is required';
+      }
+      if (!RegExp(r'^\d{10}$').hasMatch(value)) {
+        return 'Enter a valid 10-digit contact number';
+      }
+      return null;
+    };
+  }
 
   return Padding(
     padding: const EdgeInsets.symmetric(vertical: 6),
@@ -289,7 +303,8 @@ class _OrganizationFormState extends State<_OrganizationForm> {
       validator: validatorFunc,
     ),
   );
-  }
+}
+
 
   void _submitForm() async {
     bool isValid = validator.validateForm();