watch_ method not working with dict

Sorry if the title is off. I’m having a hard time getting watch_ methods working with dict attributes. Here’s an example:

from json import dumps
from textual.app import App, ComposeResult
from textual.reactive import reactive
from textual.widgets import Input, Static


class Example(App):
    display = reactive({"input": ""})

    def compose(self) -> ComposeResult:
        yield Input()
        yield Static()

    def on_input_changed(self, event: Input.Changed) -> None:
        self.display["input"] = event.value

    def watch_display(self, new_display: dict) -> None:
        self.query_one(Static).update(dumps(new_display))


Example().run()

As I type in the Input, the Static’s content doesn’t update. Interestingly, if I swap json.dumps() for rich.Pretty(), it does update, but only after I move the mouse over it. The only way I’ve been able to get what I want is by moving the update() into the on_input_changed() handler.

    def on_input_changed(self, event: Input.Changed) -> None:
        self.display["input"] = event.value
        self.query_one(Static).update(dumps(self.display))

[davep]

Aye, it’s fine to close if you’re happy with that.

[aaronst]

Ahh, okay, really appreciate the writeup! I thought maybe that was the case with dict, but seeing the Pretty() update had me convinced that it was at least partially working. Thanks again, really been enjoying learning and working with all the new capability.