v0.7.3 Pre-release thread

[adhami3310]

Please report any problems you encounter in this discussion thread or as separate issues on reflex-dev/reflex.

pip install 'reflex~=0.7.3a2'

Schedule

2025-03-14 22:20 PST: 0.7.3a1 pre-release published for testing
2025-03-16 14:50 PST: 0.7.3a2 pre-release published for testing
2025-03-17: Planned Public release of 0.7.3

Changes in 0.7.3a2

• fix prettier by @benedikt-bartscher in fix prettier #4971
• fix: allow multiple middleware postprocess update mutations by @benedikt-bartscher in fix: allow multiple middleware postprocess update mutations #4970
• uv build fixes by @adhami3310 in uv build fixes #4968

Release Notes

New features

, and _ options for formatted numbers

class State(rx.State):
    large_number: float = 123123213.21321312

rx.text(f"{State.large_number:,.3f}")

• add , and _ operations by @adhami3310 in add , and _ operations #4950

Add raw headers to router headers

class State(rx.State):
    @rx.event
    def on_event(self):
        print(self.router.header.raw_headers) # read only header mapping

• add raw headers to headers by @adhami3310 in add raw headers to headers #4958

Expose SVG elements at the el level

We are trying to reach parity where all acceptable HTML elements are exposed at the .el scope, now you can use text, line, circle, ellipse, rect, polygon, path, stop, linear_gradient, radial_gradient, defs.

• expose svg elements at the el level by @adhami3310 in expose svg elements at the el level #4962

New .get var operation

Useful accessing State vars typed as dicts/dataclasses/pydantic modedls to provide a default if the key is possibly absent.

class State(rx.State):
    field: rx.Field[dict[str, int]] = rx.field({"josh": 96, "john": 32})

State.field.get("joseph", 0)

Thanks for @benedikt-bartscher for the contribution!

• add Objectvar.get, Closes Support ObjectVar.get #4928 by @benedikt-bartscher in add Objectvar.get, Closes #4928 #4956

Bug fixes

• fix: every computed var should get it's own static deps by @benedikt-bartscher in fix: every computed var should get it's own static deps #4914
• use noopener for window.open by @adhami3310 in use noopener for window.open #4933
• Support event_actions in Form on_submit by @masenf in Support event_actions in Form on_submit #4912
• add typehint_issubclass for var_type in style by @adhami3310 in add typehint_issubclass for var_type in style #4946
• be more careful with issubclass use with var_type by @adhami3310 in be more careful with issubclass use with var_type #4951
• Dedupe custom codes emitted by rx.memo components by @masenf in Dedupe custom codes emitted by rx.memo components #4793
• Prepend hydrate event when connecting by @masenf in Prepend hydrate event when connecting #4929
• Disconnect old websockets by @masenf in Disconnect old websockets #4953
• add overload for typeddict mapping since their value type is any by @adhami3310 in add overload for typeddict mapping since their value type is any #4949
• Handle setting loglevel earlier by @masenf in Handle setting loglevel earlier #4964
• remove all get_config at the global scope by @adhami3310 in remove all get_config at the global scope #4965

Error messages

• better error message for return type of computer var by @adhami3310 in better error message for return type of computer var #4911
• improve error message for untyped vars by @adhami3310 in improve error message for untyped vars #4963
• print warning instead of error with invalid icon by @adhami3310 in print warning instead of error with invalid icon #4959

Chores

We are now using uv in the main repo. Or at least we moved off of poetry as it did not support certain features in pyproject.toml. Realistically, everything in pyproject.toml is standard and should be fine to use by any package manager.

• add .env to gitignore just in case by @adhami3310 in add .env to gitignore just in case #4909
• @Lendemor don't use init in pyi_generator by @adhami3310 in @lendemor don't use __init__ in pyi_generator #4910
• simplify ai init by @Lendemor in simplify ai init #4932
• update pyproject.toml by @adhami3310 in update pyproject.toml #4944
• migrate from poetry to uv by @adhami3310 in migrate from poetry to uv #4952
• bump reflex to 0.7.3.dev1 by @adhami3310 in bump reflex to 0.7.3.dev1 #4957
• add template for enterprise, cloud and build issues by @Lendemor in add template for enterprise, cloud and build issues #4961
• middleware attr should be private by @Lendemor in middleware attr should be private #4939
• prettier by @adhami3310 in prettier #4941

Full Changelog: v0.7.2...v0.7.3

[ozgulkah]

AG grid gets error after 0.7.0 I tried for 0.7.1 , 0.7.2 and 0.7.3 new release . Error message : TypeError: Argument 1 ('target') to ResizeObserver.observe must be an instance of Element

Is there any plan to fix this issue with ag-grid?

Here different raised questions for same topic:

https://github.com/orgs/reflex-dev/discussions/4900

https://github.com/orgs/reflex-dev/discussions/4973

https://github.com/orgs/reflex-dev/discussions/4850#discussioncomment-12257202

[adhami3310]

that is an issue in reflex-ag-grid by not having up-to-date deps, not in reflex

as for reflex-ag-grid, it will not be maintained anymore in lieu of reflex-enterprise

[davidmuraya]

I keep seeing these warning when deploying:

DEFAULT 2025-03-18T08:08:29.003597Z Warning: Frontend version 0.7.2 for session 1q6n05LhIpTtJyLEAAAt does not match
DEFAULT 2025-03-18T08:08:29.003625Z the backend version 0.7.3.

In requirements.txt, I have only specified reflex without a specific version:

reflex

[adhami3310]

you should specify the same version of reflex you're using locally, not a blanket requirement

[adhami3310]

0.7.3 is released