accept dict str str

reflex/components/el/elements/forms.py

@@ -111,6 +111,15 @@ def on_submit_event_spec() -> Tuple[Var[Dict[str, Any]]]:
     return (FORM_DATA,)
 
 
+def on_submit_string_event_spec() -> Tuple[Var[Dict[str, str]]]:
+    """Event handler spec for the on_submit event.
+
+    Returns:
+        The event handler spec.
+    """
+    return (FORM_DATA,)
+
+
 class Form(BaseHTML):
     """Display the form element."""
 
@@ -150,7 +159,7 @@ class Form(BaseHTML):
     handle_submit_unique_name: Var[str]
 
     # Fired when the form is submitted
-    on_submit: EventHandler[on_submit_event_spec]
+    on_submit: EventHandler[on_submit_event_spec, on_submit_string_event_spec]
 
     @classmethod
     def create(cls, *children, **props):

reflex/components/el/elements/forms.pyi

@@ -271,6 +271,7 @@ class Fieldset(Element):
         ...
 
 def on_submit_event_spec() -> Tuple[Var[Dict[str, Any]]]: ...
+def on_submit_string_event_spec() -> Tuple[Var[Dict[str, str]]]: ...
 
 class Form(BaseHTML):
     @overload
@@ -337,7 +338,9 @@ class Form(BaseHTML):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[
+            Union[EventType[Dict[str, Any]], EventType[Dict[str, str]]]
+        ] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "Form":

reflex/components/radix/primitives/form.pyi

@@ -129,7 +129,9 @@ class FormRoot(FormComponent, HTMLForm):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[
+            Union[EventType[Dict[str, Any]], EventType[Dict[str, str]]]
+        ] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "FormRoot":
@@ -594,7 +596,9 @@ class Form(FormRoot):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[
+            Union[EventType[Dict[str, Any]], EventType[Dict[str, str]]]
+        ] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "Form":
@@ -716,7 +720,9 @@ class FormNamespace(ComponentNamespace):
         on_mouse_over: Optional[EventType[[]]] = None,
         on_mouse_up: Optional[EventType[[]]] = None,
         on_scroll: Optional[EventType[[]]] = None,
-        on_submit: Optional[EventType[Dict[str, Any]]] = None,
+        on_submit: Optional[
+            Union[EventType[Dict[str, Any]], EventType[Dict[str, str]]]
+        ] = None,
         on_unmount: Optional[EventType[[]]] = None,
         **props,
     ) -> "Form":

reflex/event.py

@@ -1104,7 +1104,7 @@ def call_event_handler(
     if event_spec_return_types:
         failures = []
 
-        for event_spec_return_type in event_spec_return_types:
+        for i, event_spec_return_type in enumerate(event_spec_return_types):
             args = get_args(event_spec_return_type)
 
             args_types_without_vars = [
@@ -1146,6 +1146,11 @@ def call_event_handler(
                         break
 
             if not failed_type_check:
+                if i:
+                    console.warn(
+                        f"Event handler {key} expects {args_types_without_vars} but got {type_hints_of_provided_callback} as annotated in {event_handler.fn.__qualname__} instead. "
+                        f"This may lead to unexpected behavior but is intentionally ignored for {key}."
+                    )
                 return event_handler(*parsed_args)
 
         if failures: