zulip/zulip-flutter

Handle `null` for `user_settings.twenty_four_hour_time`, meaning "locale default"

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#1,727 opened on Jul 21, 2025

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Description

Servers (as of 2025-07) don't send null for user_settings.twenty_four_hour_time, but there's a plan for them to do so, once clients that don't break on null are dominant; see https://github.com/zulip/zulip/issues/35332 and linked discussion.

We'll soon start accepting null, but without actually handling it with its intended meaning. This issue is to do that, and the plan is to use ffi; see #45 for details on how we'd like to use ffi.

Contributor guide

Research direction
Study the plan for handling null in user settings.twenty four hour time as described in issue #35332 and #45. Understand the FFI approach used in the codebase (probably Freezed). Implement the logic to interpret null as locale default.
Tech stack
dartflutter
Domain
mobile
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
DartFlutter
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50