Fall back to english on MissingInterpolationError

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/i18n_interpolation_fallbacks.rb b/lib/i18n_interpolation_fallbacks.rb
new file mode 100644
index 000000000..45c6dfe59
--- /dev/null
+++ b/lib/i18n_interpolation_fallbacks.rb
@@ -0,0 +1,24 @@
+module I18n
+  module Backend
+    module InterpolationFallbacks
+
+      def translate(locale, key, options = {})
+        return super if options[:fallback]
+        default = extract_string_or_lambda_default!(options) if options[:default]
+
+        options[:fallback] = true
+        I18n.fallbacks[locale].each do |fallback|
+          begin
+            result = super(fallback, key, options)
+            return result unless result.nil?
+          rescue I18n::MissingInterpolationArgument
+          end
+        end
+        options.delete(:fallback)
+
+        return super(locale, nil, options.merge(:default => default)) if default
+        raise(I18n::MissingInterpolationError.new(locale, key, options))
+      end
+    end
+  end
+end