Class: RailsErrorDashboard::Current

Inherits:
ActiveSupport::CurrentAttributes
  • Object
show all
Defined in:
lib/rails_error_dashboard/current.rb

Overview

Request-scoped state for the dashboard.

Currently holds only the locale. ActiveSupport resets CurrentAttributes between requests, but the dashboard does NOT rely on that alone — the around_action in ApplicationController clears this explicitly in an ensure block. Two reasons:

1. RED renders inside the host app's process, on Puma threads the host
 also uses. State that outlives its request is the shape behind both
 #143 and #148, where a value stranded on a recycled thread leaked
 into a later request.
2. The reset is a framework guarantee we do not want to depend on for a
 safety property.

NOTE: locale intentionally has NO default. A getter that coerced nil to "en" would make restoration stamp "en" onto a thread that started clean — the exact trap documented in ApplicationController#with_dashboard_locale for Pagy. Callers resolve the default themselves via .locale_or_default.

Class Method Summary collapse

Class Method Details

.locale_or_default ⇒ String

The locale the dashboard should render in, applying full precedence:

Current.locale            (set per request; later, the user's picker)
-> config.dashboard_locale
  -> "en"

Each candidate is validated against the locales RED actually ships, so a configured locale we cannot serve degrades to English instead of failing mid-render.

Returns:

  • (String) —

    a locale RED ships. Never nil, never raises.



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# File 'lib/rails_error_dashboard/current.rb', line 35

def locale_or_default
  # to_s.strip rather than .presence — locale is a public attribute and
  # a later caller (the session-backed picker in Phase 5) could put any
  # object in it. Anything that is not a usable String falls through to
  # the configured value.
  candidate = locale.to_s.strip
  candidate = configured_locale.to_s.strip if candidate.empty?
  I18nStore.resolve(candidate)
rescue StandardError
  I18nStore::DEFAULT_LOCALE
end