[SYNC]

lib/src/form/src/controller.dart

@@ -467,6 +467,35 @@ class AstromicFormController extends FormController {
           switchValuesFirst: true);
     }
   }
+
+  bool validateGroup(String groupID, {Map<String, int>? parents}) {
+    // Get tha main targeted group's structure
+    FormGroupStructure? groupStructure = getGroupStructure(groupID);
+    assert(groupStructure != null, 'The Group $groupID doesn\'t seem to be found, are you sure you initialized it?');
+
+    // Get the prefix for subgroups if exists
+    String? prefix;
+    if (isASubGroup(groupID) && parents != null) {
+      prefix = parents.entries.map((MapEntry<String, int> parentEntry) => standeredGroupFormat(parentEntry.key, parentEntry.value.toString(), null)).join('-');
+    }
+
+    // Get current instances of this group and the new index.
+    int currentGroupInstances = getInstanceCount(groupID, parents: parents);
+
+    List<String> fieldsToValidate = <String>[];
+    List<String> valuesToValidate = <String>[];
+    for (int i = 0; i < currentGroupInstances; i++) {
+      for (String fieldID in groupStructure!.fields) {
+        fieldsToValidate.add((prefix != null ? '$prefix-' : '') + standeredGroupFormat(groupID, i.toString(), fieldID));
+      }
+      for (String valueID in (groupStructure.values ?? <String>[])) {
+        valuesToValidate.add((prefix != null ? '$prefix-' : '') + standeredGroupFormat(groupID, i.toString(), valueID));
+      }
+    }
+
+    //
+    return validateOnly(fieldsToValidate) && validateValues(valuesToValidate);
+  }
   //!SECTION
 
   //SECTION - Helper Methods