pydantic v2 hacks/fixups

reflex/components/component.py

@@ -727,7 +727,7 @@ class Component(BaseComponent, ABC):
         # Get Vars associated with component props.
         for prop in self.get_props():
             prop_var = getattr(self, prop)
-            if isinstance(prop_var, Var):
+            if isinstance(prop_var, Var) and prop_var is not UnspecifiedVar:
                 vars.append(prop_var)
 
         # Style keeps track of its own VarData instance, so embed in a temp Var that is yielded.

reflex/state.py

@@ -902,7 +902,11 @@ class BaseState(Base, ABC, extra=pydantic.Extra.allow):
         for prop_name in self.base_vars:
             if prop_name == constants.ROUTER:
                 continue  # never reset the router data
-            setattr(self, prop_name, copy.deepcopy(fields[prop_name].default))
+            if fields[prop_name].is_required():
+                value = self.base_vars[prop_name].get_default_value()
+            else:
+                value = copy.deepcopy(fields[prop_name].default)
+            setattr(self, prop_name, copy.deepcopy(value))
 
         # Recursively reset the substates.
         for substate in self.substates.values():
@@ -916,8 +920,8 @@ class BaseState(Base, ABC, extra=pydantic.Extra.allow):
         for prop_name in self.base_vars:
             field = fields[prop_name]
             if isinstance(field.default, ClientStorageBase) or (
-                isinstance(field.type_, type)
+                isinstance(field.annotation, type)
-                and issubclass(field.type_, ClientStorageBase)
+                and issubclass(field.annotation, ClientStorageBase)
             ):
                 setattr(self, prop_name, copy.deepcopy(field.default))
 

reflex/vars.py

@@ -632,6 +632,8 @@ class Var:
                 f"wrongly."
             )
 
+        if name.startswith("_var"):
+            print(name)
         raise AttributeError(
             f"The State var has no attribute '{name}' or may have been annotated wrongly.",
         )
@@ -1538,10 +1540,6 @@ class Var:
 serializers.serializer(_encode_var)
 
 
-# Marker for a Var that was not passed
-UnspecifiedVar = Var()
-
-
 @dataclasses.dataclass(
     eq=False,
     **{"slots": True} if sys.version_info >= (3, 10) else {},
@@ -1664,6 +1662,10 @@ class BaseVar(Var):
         return setter
 
 
+# Marker for a Var that was not passed
+UnspecifiedVar = BaseVar(_var_name="<UNSPECIFIED>")
+
+
 @dataclasses.dataclass(init=False, eq=False)
 class ComputedVar(Var, property):
     """A field with computed getters."""

tests/utils/test_utils.py

@@ -339,8 +339,8 @@ def test_node_install_windows(tmp_path, mocker):
     mocker.patch("reflex.utils.processes.stream_logs")
 
     class Resp(Base):
-        status_code = 200
+        status_code: int = 200
-        text = "test"
+        text: str = "test"
 
     mocker.patch("httpx.stream", return_value=Resp())
     download = mocker.patch("reflex.utils.prerequisites.download_and_extract_fnm_zip")
@@ -381,8 +381,8 @@ def test_node_install_unix(tmp_path, mocker, machine, system):
     mocker.patch("reflex.utils.prerequisites.platform.system", return_value=system)
 
     class Resp(Base):
-        status_code = 200
+        status_code: int = 200
-        text = "test"
+        text: str = "test"
 
     mocker.patch("httpx.stream", return_value=Resp())
     download = mocker.patch("reflex.utils.prerequisites.download_and_extract_fnm_zip")