fix: Item.view not being correctly set when using 'add_item' methods

discord/ui/action_row.py

@@ -197,6 +197,7 @@ class ActionRow(Item[V]):
         if not isinstance(item, Item):
             raise TypeError(f'expected Item not {item.__class__.__name__}')
 
+        item._view = self._view
         self._children.append(item)
         return self
 

discord/ui/container.py

@@ -110,7 +110,6 @@ class Container(Item[V]):
         self.spoiler: bool = spoiler
         self._colour = accent_colour or accent_color
 
-        self._view: Optional[V] = None
         self.row = row
         self.id = id
 
@@ -277,6 +276,9 @@ class Container(Item[V]):
             if getattr(item, '__discord_ui_section__', False):
                 self.__dispatchable.append(item.accessory)  # type: ignore
 
+        if getattr(item, '__discord_ui_update_view__', False):
+            item._update_children_view(self.view)  # type: ignore
+
         return self
 
     def remove_item(self, item: Item[Any]) -> Self:

discord/ui/section.py

@@ -139,9 +139,9 @@ class Section(Item[V]):
         if not isinstance(item, (Item, str)):
             raise TypeError(f'expected Item or str not {item.__class__.__name__}')
 
-        self._children.append(
-            item if isinstance(item, Item) else TextDisplay(item),
-        )
+        item = item if isinstance(item, Item) else TextDisplay(item)
+        item._view = self.view
+        self._children.append(item)
         return self
 
     def remove_item(self, item: Item[Any]) -> Self:

discord/ui/view.py

@@ -342,6 +342,10 @@ class BaseView:
             raise ValueError('v2 items cannot be added to this view')
 
         item._view = self
+
+        if getattr(item, '__discord_ui_update_view__', False):
+            item._update_children_view(self)  # type: ignore
+
         self._children.append(item)
         return self