fix dataset update

gradio/blocks.py

@@ -1723,12 +1723,12 @@ async def postprocess_data(
                 ) from err
 
             if block.stateful:
-                if not utils.is_update(predictions[i]):
+                if not utils.is_prop_update(predictions[i]):
                     state[block._id] = predictions[i]
                 output.append(None)
             else:
                 prediction_value = predictions[i]
-                if utils.is_update(
+                if utils.is_prop_update(
                     prediction_value
                 ):  # if update is passed directly (deprecated), remove Nones
                     prediction_value = utils.delete_none(
@@ -1738,7 +1738,7 @@ async def postprocess_data(
                 if isinstance(prediction_value, Block):
                     prediction_value = prediction_value.constructor_args.copy()
                     prediction_value["__type__"] = "update"
-                if utils.is_update(prediction_value):
+                if utils.is_prop_update(prediction_value):
                     kwargs = state[block._id].constructor_args.copy()
                     kwargs.update(prediction_value)
                     kwargs.pop("value", None)

gradio/components/dataset.py

@@ -26,7 +26,7 @@ def __init__(
         self,
         *,
         label: str | None = None,
-        components: list[Component] | list[str],
+        components: list[Component] | list[str] | None = None,
         component_props: list[dict[str, Any]] | None = None,
         samples: list[list[Any]] | None = None,
         headers: list[str] | None = None,
@@ -70,7 +70,7 @@ def __init__(
         self.container = container
         self.scale = scale
         self.min_width = min_width
-        self._components = [get_component_instance(c) for c in components]
+        self._components = [get_component_instance(c) for c in components or []]
         if component_props is None:
             self.component_props = [
                 component.recover_kwargs(

gradio/flagging.py

@@ -164,7 +164,7 @@ def flag(
             ) / client_utils.strip_invalid_filename_characters(
                 getattr(component, "label", None) or f"component {idx}"
             )
-            if utils.is_update(sample):
+            if utils.is_prop_update(sample):
                 csv_data.append(str(sample))
             else:
                 data = (

gradio/helpers.py

@@ -544,7 +544,7 @@ def load_from_cache(self, example_id: int) -> list[Any]:
                     component, components.File
                 ):
                     value_to_use = value_as_dict
-                if not utils.is_update(value_as_dict):
+                if not utils.is_prop_update(value_as_dict):
                     raise TypeError("value wasn't an update")  # caught below
                 output.append(value_as_dict)
             except (ValueError, TypeError, SyntaxError):

gradio/utils.py

@@ -737,7 +737,7 @@ def validate_url(possible_url: str) -> bool:
         return False
 
 
-def is_update(val):
+def is_prop_update(val):
     return isinstance(val, dict) and "update" in val.get("__type__", "")
 
 

js/dataset/Index.svelte

@@ -12,7 +12,7 @@
 	>;
 	export let label = "Examples";
 	export let headers: string[];
-	export let samples: any[][];
+	export let samples: any[][] | null = null;
 	export let elem_id = "";
 	export let elem_classes: string[] = [];
 	export let visible = true;
@@ -34,7 +34,7 @@
 		: `${root}/file=`;
 	let page = 0;
 	$: gallery = components.length < 2;
-	let paginate = samples.length > samples_per_page;
+	let paginate = samples ? samples.length > samples_per_page : false;
 
 	let selected_samples: any[][];
 	let page_count: number;
@@ -51,6 +51,7 @@
 	}
 
 	$: {
+		samples = samples || [];
 		paginate = samples.length > samples_per_page;
 		if (paginate) {
 			visible_pages = [];