Adding date-range

Author: elnelson575

shiny/ui/_input_update.py

@@ -527,17 +527,15 @@ def update_date_range(
     label
         An input label.
     start
-        The initial start date. Either a :class:`~datetime.date` object, or a string in
-        yyyy-mm-dd format. If ``None`` (the default), will use the current date in the
-        client's time zone.
+        The starting date. Either a `date()` object, or a string in yyyy-mm-dd format.
+        If an empty string is provided, the value will be cleared.
     end
-        The initial end date. Either a :class:`~datetime.date` object, or a string in
-        yyyy-mm-dd format. If ``None`` (the default), will use the current date in the
-        client's time zone.
+        The ending date. Either a `date()` object, or a string in yyyy-mm-dd format.
+        If an empty string is provided, the value will be cleared.
     min
-        The minimum allowed value.
+        The minimum allowed value. If an empty string is passed there will be no minimum date.
     max
-        The maximum allowed value.
+        The maximum allowed value. If an empty string is passed there will be no maximum date.
     session
         A :class:`~shiny.Session` instance. If not provided, it is inferred via
         :func:`~shiny.session.get_current_session`.
@@ -559,7 +557,20 @@ def update_date_range(
         "min": _as_date_attr(min),
         "max": _as_date_attr(max),
     }
-    session.send_input_message(id, drop_none(msg))
+    msg = drop_none(msg)
+
+    # Handle the special case of "", which means the value should be cleared
+    # (i.e., go from a specified date to no specified date)
+    if start == "":
+        msg["value"]["start"] = None
+    if end == "":
+        msg["value"]["end"] = None
+    if min == "":
+        msg["min"] = None
+    if max == "":
+        msg["max"] = None
+
+    session.send_input_message(id, msg)
 
 
 # -----------------------------------------------------------------------------

tests/playwright/shiny/components/date_range/app.py

@@ -45,6 +45,7 @@
         language="en",
     ),
     ui.output_text("empty"),
+    ui.input_action_button("update", "Update Dates"),
 )
 
 
@@ -80,7 +81,23 @@ def empty():
     @reactive.event(input.update, ignore_none=True, ignore_init=True)
     def _():
         d = date.fromisoformat("2011-11-05")
-        ui.update_date("standard_date_picker", value=d)
+
+        # Take the existing date rang input and blank it out
+        ui.update_date_range(
+            "standard_date_picker",
+            start="",
+            end="",
+            min="",
+            max="",
+        )
+        # Take the None date range input and set it
+        ui.update_date_range(
+            "none_date_picker",
+            start=d - relativedelta(days=3),
+            end=d + relativedelta(days=10),
+            min=d - relativedelta(days=4),
+            max=d + relativedelta(days=11),
+        )
 
 
 app = App(app_ui, server, debug=True)

tests/playwright/shiny/components/date_range/test_date_range.py

@@ -33,3 +33,22 @@ def test_dynamic_navs(page: Page, local_app: ShinyAppProc) -> None:
     date3.expect_min_date(None)
     date_output_empty = controller.OutputText(page, "empty")
     date_output_empty.expect_value("Date Picker Value: None to None")
+
+    controller.InputActionButton(page, "update").click()
+
+    # This is updating min and max dates, but the playwright locater cannot find it.
+    # It appears that the disabled dates are correct.
+    # Expect that means the calcuated values for disabled dates are updating correctly
+    # but the attribute is not updated.
+    date2.expect_value(("2011-11-02", "2011-11-15"))
+    # date2.expect_max_date("2011-11-16")
+    # date2.expect_min_date("2011-11-01")
+    date_output = controller.OutputText(page, "none")
+    date_output.expect_value("Date Picker Value: 2011-11-02 to 2011-11-15")
+
+    # Check that the updated standard date range input is blanked
+    date1.expect_value(("", ""))
+    # date1.expect_max_date(None)
+    # date1.expect_min_date(None)
+    date_output = controller.OutputText(page, "standard")
+    date_output.expect_value("Date Picker Value: None to None")