Fix dates and id typing

CHANGELOG.md

@@ -2,6 +2,12 @@
 All notable changes to `dash` will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+## [3.0.0-rc2] - UNRELEASED
+
+## Fixed
+
+- [#3142](https://github.com/plotly/dash/pull/3142) Fix typing generation for id and dates props.
+
 ## [3.0.0-rc1] - 2025-01-28
 
 ## Added

components/dash-core-components/src/fragments/Dropdown.react.js

@@ -6,7 +6,7 @@ import 'react-virtualized-select/styles.css';
 import '../components/css/[email protected]';
 import '../components/css/Dropdown.css';
 
-import {propTypes, defaultProps} from '../components/Dropdown.react';
+import {propTypes} from '../components/Dropdown.react';
 import {sanitizeOptions} from '../utils/optionTypes';
 import isEqual from 'react-fast-compare';
 
@@ -168,6 +168,5 @@ const Dropdown = props => {
 };
 
 Dropdown.propTypes = propTypes;
-Dropdown.defaultProps = defaultProps;
 
 export default Dropdown;

dash/development/_py_prop_typing.py

@@ -120,6 +120,10 @@ def generate_enum(type_info, *_):
 def get_prop_typing(
     type_name: str, component_name: str, prop_name: str, type_info, namespace=None
 ):
+    if prop_name == "id":
+        # Id is always the same either a string or a dict for pattern matching.
+        return "typing.Union[str, dict]"
+
     if namespace:
         # Only check the namespace once
         special = (
@@ -141,7 +145,38 @@ def generate_plotly_figure(*_):
     return "typing.Union[Figure, dict]"
 
 
-special_cases = {"dash_core_components": {"Graph": {"figure": generate_plotly_figure}}}
+def generate_datetime_prop(component, array=False):
+    if "import datetime" not in custom_imports["dash_core_components"][component]:
+        custom_imports["dash_core_components"][component].append("import datetime")
+
+    def generator(*_):
+        datetime_type = "typing.Union[str, datetime.datetime]"
+        if array:
+            datetime_type = f"typing.Sequence[{datetime_type}]"
+        return datetime_type
+
+    return generator
+
+
+special_cases = {
+    "dash_core_components": {
+        "Graph": {"figure": generate_plotly_figure},
+        "DatePickerRange": {
+            "start_date": generate_datetime_prop("DatePickerRange"),
+            "end_date": generate_datetime_prop("DatePickerRange"),
+            "min_date_allowed": generate_datetime_prop("DatePickerRange"),
+            "max_date_allowed": generate_datetime_prop("DatePickerRange"),
+            "disabled_days": generate_datetime_prop("DatePickerRange", True),
+        },
+        "DatePickerSingle": {
+            "date": generate_datetime_prop("DatePickerSingle"),
+            "min_date_allowed": generate_datetime_prop("DatePickerSingle"),
+            "max_date_allowed": generate_datetime_prop("DatePickerSingle"),
+            "disabled_days": generate_datetime_prop("DatePickerSingle", True),
+            "initial_visible_month": generate_datetime_prop("DatePickerSingle"),
+        },
+    }
+}
 
 
 PROP_TYPING = {

tests/unit/development/metadata_test.py

@@ -154,7 +154,7 @@ def __init__(
         optionalAny: typing.Optional[typing.Any] = None,
         customProp: typing.Optional[typing.Any] = None,
         customArrayProp: typing.Optional[typing.Sequence[typing.Any]] = None,
-        id: typing.Optional[str] = None,
+        id: typing.Optional[typing.Union[str, dict]] = None,
         **kwargs
     ):
         self._prop_names = ['children', 'id', 'aria-*', 'customArrayProp', 'customProp', 'data-*', 'in', 'optionalAny', 'optionalArray', 'optionalArrayOf', 'optionalBool', 'optionalElement', 'optionalEnum', 'optionalNode', 'optionalNumber', 'optionalObject', 'optionalObjectOf', 'optionalObjectWithExactAndNestedDescription', 'optionalObjectWithShapeAndNestedDescription', 'optionalString', 'optionalUnion']