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wire 2026-09-07
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LiveView flash age 1000x too long, plus IEx autocomplete crash fix

By RepoJournal · Filed · About Elixir & Phoenix

Barna Kovacs lukaszsamson Alexander Gubarev
3 people shipped this
Barna Kovacs @preciz 3 cited lukaszsamson @lukaszsamson 3 cited Alexander Gubarev @AlexGx 2 cited

Two fixes land in phoenix_live_view and elixir, correcting a 1000x flash token age error, non-idempotent disconnected callbacks, an IEx crash on incomplete UTF-8, and Ecto's exists semantics.

phoenix_live_view's flash verification used a max age of 60000 seconds instead of 60 when it passed `:timer.seconds(60)` to `Phoenix.Token.verify/4`, which expects seconds [1]. That meant a signed flash token remained valid for nearly 17 hours, not the intended 1 minute. The unit fix was assisted by Codex CLI:GPT 6 Astra [2], which is not a human reviewer you should trust [2].

Two LiveView behavior fixes: `Utils.verify_flash` now uses 60 seconds for max age, and `hook.disconnected()` is guarded so it fires once per disconnection, symmetric with `__reconnected()`, preventing repeated calls on persistent connection errors [3]. The push events diff simplifies construction of the events map, removing an unreachable falsy branch [4], and JS push options are no longer mutated, so hooks reusing an opts object across two `push()` calls behave correctly [5].

In elixir-land, IEx's autocomplete crashed with `UnicodeConversionError` when completion candidates shared an incomplete UTF-8 codepoint, such as map keys or function names [6]; the fix handles that crash. Separate fixes address `IEx.h/1` introspection for macros [7]. Ecto fixed `exists?` semantics for query combinations by wrapping in a subquery instead of rewriting to `SELECT 1`, preserving the original query form for set membership [8].

Action items

References

  1. [1] Fix max flash age unit in Utils.verify_flash (#4429) ↗ phoenixframework/phoenix_live_view
  2. [2] Fix max flash age unit in Utils.verify_flash ↗ phoenixframework/phoenix_live_view
  3. [3] Guard hook disconnected lifecycle callback ↗ phoenixframework/phoenix_live_view
  4. [4] Simplify push events diff (#4427) ↗ phoenixframework/phoenix_live_view
  5. [5] Avoid mutating JS push options ↗ phoenixframework/phoenix_live_view
  6. [6] Fix IEx incomplete codepoint autocomplete crash (#15864) ↗ elixir-lang/elixir
  7. [7] Fix IEx.h/1 macro spec introspection (#15863) ↗ elixir-lang/elixir
  8. [8] Fix `exists?` semantics for query combinations ↗ elixir-ecto/ecto

$ ls elixir/reviews/ # the step-back reads

the week in review Phoenix drops Ecto from phx.new.web default the month in review Elixir core tuning, Ecto breaking change, LiveView patches dominate August
Topics: Elixir & Phoenix Full archive →

Quick answers

What shipped in Elixir & Phoenix on September 7, 2026?
Two fixes land in phoenix_live_view and elixir, correcting a 1000x flash token age error, non-idempotent disconnected callbacks, an IEx crash on incomplete UTF-8, and Ecto's exists semantics. In total, 8 commits and 7 pull requests landed.
Who contributed to Elixir & Phoenix on September 7, 2026?
3 developers shipped this update, including Alexander Gubarev, Barna Kovacs, and lukaszsamson.
What were the notable Elixir & Phoenix updates?
Fix max flash age unit in Utils.verify_flash (#4429), Fix max flash age unit in Utils.verify_flash, and Guard hook disconnected lifecycle callback.
♥

$ log Elixir & Phoenix --recent

Elixir fixes unary operator precedence with do-end blocks 15 shipped Phoenix CI drops Process.sleep blind waits; Elixir fixes Hex version check 13 shipped Elixir date parsing loses guarded helpers 41 shipped Elixir reworks test manifest for parameterized failures 15 shipped

$ log --all # elsewhere on the wire

Meta React Native adds Stable API guards to renderer attributed string FastAPI & Pydantic Pydantic fixes Mypy plugin crash, tightens datetime constraints

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