Fix: Move to cache in init postprocess + Fallback Fixes (#6107)

* Add code and test

* restore

* add changeset

---------

Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>

.changeset/loose-ducks-feel.md

@@ -0,0 +1,8 @@
+---
+"@gradio/app": minor
+"@gradio/fallback": minor
+"@gradio/slider": minor
+"gradio": minor
+---
+
+feat:Fix: Move to cache in init postprocess + Fallback Fixes

gradio/component_meta.py

@@ -11,6 +11,7 @@
 from gradio.data_classes import GradioModel, GradioRootModel
 from gradio.events import EventListener
 from gradio.exceptions import ComponentDefinitionError
+from gradio.utils import no_raise_exception
 
 INTERFACE_TEMPLATE = '''
 {{ contents }}
@@ -115,17 +116,20 @@ def create_or_modify_pyi(
             + ["from gradio.events import Dependency"]
             + lines[last_empty_line_before_class:]
         )
-        pyi_file.write_text("\n".join(lines))
+        with no_raise_exception():
+            pyi_file.write_text("\n".join(lines))
     current_interface, _ = extract_class_source_code(pyi_file.read_text(), class_name)
     if not current_interface:
-        with open(str(pyi_file), mode="a") as f:
-            f.write(new_interface)
+        with no_raise_exception():
+            with open(str(pyi_file), mode="a") as f:
+                f.write(new_interface)
     else:
         contents = pyi_file.read_text()
         contents = contents.replace(current_interface, new_interface.strip())
         current_contents = pyi_file.read_text()
         if current_contents != contents:
-            pyi_file.write_text(contents)
+            with no_raise_exception():
+                pyi_file.write_text(contents)
 
 
 def in_event_listener():

gradio/components/base.py

@@ -25,6 +25,7 @@
 from gradio.data_classes import GradioDataModel
 from gradio.events import EventListener
 from gradio.layouts import Form
+from gradio.processing_utils import move_files_to_cache
 
 if TYPE_CHECKING:
     from typing import TypedDict
@@ -133,8 +134,8 @@ class Component(ComponentBase, Block):
 
     def __init__(
         self,
-        *,
         value: Any = None,
+        *,
         label: str | None = None,
         info: str | None = None,
         show_label: bool | None = None,
@@ -206,11 +207,13 @@ def __init__(
         self.load_event: None | dict[str, Any] = None
         self.load_event_to_attach: None | tuple[Callable, float | None] = None
         load_fn, initial_value = self.get_load_fn_and_initial_value(value)
-        self.value = (
+        initial_value = (
             initial_value
             if self._skip_init_processing
             else self.postprocess(initial_value)
         )
+        self.value = move_files_to_cache(initial_value, self)  # type: ignore
+
         if callable(load_fn):
             self.attach_load_event(load_fn, every)
 

gradio/utils.py

@@ -532,6 +532,15 @@ def set_directory(path: Path | str):
         os.chdir(origin)
 
 
+@contextmanager
+def no_raise_exception():
+    """Context manager that suppresses exceptions."""
+    try:
+        yield
+    except Exception:
+        pass
+
+
 def sanitize_value_for_csv(value: str | Number) -> str | Number:
     """
     Sanitizes a value that is being written to a CSV file to prevent CSV injection attacks.

js/app/src/types.ts

@@ -26,9 +26,9 @@ export interface DependencyTypes {
 }
 
 export interface Payload {
-	fn_index: number,
-	data: unknown[],
-	event_data: unknown | null,
+	fn_index: number;
+	data: unknown[];
+	event_data: unknown | null;
 }
 
 export interface Dependency {

js/fallback/Index.svelte

@@ -23,11 +23,13 @@
 </script>
 
 <Block {visible} {elem_id} {elem_classes} {container} {scale} {min_width}>
-	<StatusTracker
-		autoscroll={gradio.autoscroll}
-		i18n={gradio.i18n}
-		{...loading_status}
-	/>
+	{#if loading_status}
+		<StatusTracker
+			autoscroll={gradio.autoscroll}
+			i18n={gradio.i18n}
+			{...loading_status}
+		/>
+	{/if}
 
 	<JsonView json={value} />
 </Block>

js/slider/Index.svelte

@@ -202,7 +202,7 @@
 		height: 400%;
 	}
 
-	input[type=range]::-moz-range-track {
+	input[type="range"]::-moz-range-track {
 		height: 12px;
 	}
 </style>

test/test_components.py

@@ -820,6 +820,11 @@ def test_component_functions(self, gradio_temp_dir):
         output2 = audio_output.postprocess(Path(y_audio.name))
         assert output1 == output2
 
+    def test_default_value_postprocess(self):
+        x_wav = deepcopy(media_data.BASE64_AUDIO)
+        audio = gr.Audio(value=x_wav["name"])
+        assert processing_utils.is_in_or_equal(audio.value["name"], audio.GRADIO_CACHE)
+
     def test_in_interface(self):
         def reverse_audio(audio):
             sr, data = audio