Updated flat validation

Author: Nandan Grover

client/src/screens/SignUp/index.tsx

@@ -106,7 +106,8 @@ const SignUp: React.FC<RouteComponentProps> = (props: RouteComponentProps) => {
       }
 
       if (!validateFlat(flat)) {
-        toast.error('Invalid Flat Number. Flat Number should be of type XX-NN', { autoClose: 6000 });
+        toast.error('Invalid Flat Number. Flat Number should be of type X*-N* (Example: Sapphire-456)'
+        , { autoClose: 6000 });
         return;
       }
       const { data }: ExecutionResult = await createUser({

client/src/utils/validation.ts

@@ -24,7 +24,7 @@ const validatePassword = (password: string): boolean => {
  * Flat Number Validation
  */
 const validateFlat = (flat: string): boolean => {
-  if (/[A-Z]-[0-9{1-2}]/g.test(flat)) {
+  if (/[((A-Z{1,9})|(a-z{1,9})]-[0-9{1-9}]/g.test(flat)) {
     return true;
   }
   return false;