v0.6.8

New Features

New API: rx.EventChain.create

This new interface makes it easier to transform EventType (EventHandler, EventSpec, and lambda - as accepted by component event triggers) into EventChain to be rendered in hook calls or rx.call_script / rx.call_function invocations.

• Move _create_event_chain to EventChain.create by @masenf in #4557

New API: BaseState.get_var_value

Similar to get_state, this API provides access to a Var defined in another state. If the value is mutable, changing it will be reflected in the other state. This API is intended for use with ComponentState implementations that want to "borrow" data from another state.

Show Example Code

from typing import ClassVar

import reflex as rx


class MyState(rx.State):
    data: list[dict] = []


class Appender(rx.ComponentState):
    _data: ClassVar[rx.Var]

    async def add_value(self, form_data: dict):
        (await self.get_var_value(self._data)).append(form_data)

    @classmethod
    def get_component(cls, data: rx.Var[list[dict]]) -> rx.Component:
        cls._data = data
        return rx.card(
            rx.form(
                rx.vstack(
                    rx.input(placeholder="Name", name="name", autofocus=True),
                    rx.input(placeholder="Email", name="email"),
                    rx.button("Submit", type="submit"),
                ),
                reset_on_submit=True,
                on_submit=cls.add_value,
            ),
        )


appender = Appender.create


def index() -> rx.Component:
    return rx.vstack(
        rx.foreach(
            MyState.data,
            lambda d: rx.text(d.to_string()),
        ),
        appender(data=MyState.data),
    )


app = rx.App()
app.add_page(index)

• BaseState.get_var_value helper to get a value from a Var by @masenf in #4553

Improvements

Add .endswith() var operation for strings

• Add endswith method to String class by @5quinque in #4577

Simpler API for rx._x.client_state

Use client state vars anywhere in the tree instead of having to include them and use them separately.

• improve client state by @adhami3310 in #4597

Support Recursive UI elements with @rx.memo

See example code in PR. This allows the rendering of trees and other self-referential structures using rx.foreach.

• fix recursive UI by @adhami3310 in #4599

Performance

• Minor performance improvements for state getattribute and setattr by @benedikt-bartscher in #4543
• improve dynamic route vars, no need to compute deps by @benedikt-bartscher in #4551

Miscellaneous

• fix health check and skip not needed tasks by @Lendemor in #4563
• [ENG-4083] Track internal changes in dataclass instances by @masenf in #4558
• use position in vardata to mark internal hooks by @Lendemor in #4549
• Enable automatic retry on redis errors by @masenf in #4595

Bug Fixes

• Add expire_on_commit=False for async sessions by @masenf in #4582
• Do not allow call_function callback argument to be added afterwards by @masenf in #4552
• [ENG-2157] [Refix] Allow rx.download to resolve rx.get_upload_url by @masenf in #4470
• fixes #4578 - correct the way dim_props created by @KanvaBhatia in #4587
• unbreak link _hover by @masenf in #4537
• [ENG-4255] Code blocks lead to redefined const in web page by @masenf in #4598

Version Bumps

• chore: update sonner (toast) by @JonZeolla in #4572
• Upgrade Lucide to version 0.469.0 by @celsiusnarhwal in #4571
• poetry 2.0.0 compatibility by @masenf in #4593

Documentation

Other Changes

• add codespell to pre-commit by @Lendemor in #4559
• autodetect print/breakpoints by @Lendemor in #4581
• HOS-400: adding support for config by @Kastier1 in #4540
• Add deprecation message for non-cached var by @masenf in #4591
• test_lifespan: stop periodic events by @masenf in #4600
• Use older python versions for macos actions by @masenf in #4601

New Contributors

• @5quinque made their first contribution in #4577
• @JonZeolla made their first contribution in #4572
• @celsiusnarhwal made their first contribution in #4571
• @KanvaBhatia made their first contribution in #4587

Full Changelog: v0.6.7...v0.6.8