--- /dev/null
+# Deprecates the use of the former message interpolation syntax in activerecord
+# as in "must have %d characters". The new syntax uses explicit variable names
+# as in "{{value}} must have {{count}} characters".
+
+require 'i18n/backend/simple'
+module I18n
+ module Backend
+ class Simple
+ DEPRECATED_INTERPOLATORS = { '%d' => '{{count}}', '%s' => '{{value}}' }
+
+ protected
+ def interpolate_with_deprecated_syntax(locale, string, values = {})
+ return string unless string.is_a?(String)
+
+ string = string.gsub(/%d|%s/) do |s|
+ instead = DEPRECATED_INTERPOLATORS[s]
+ ActiveSupport::Deprecation.warn "using #{s} in messages is deprecated; use #{instead} instead."
+ instead
+ end
+
+ interpolate_without_deprecated_syntax(locale, string, values)
+ end
+ alias_method_chain :interpolate, :deprecated_syntax
+ end
+ end
+end
\ No newline at end of file