Add options for FailureApp's i18n_message. Similar heartcombo#1633

lib/devise/failure_app.rb

@@ -68,8 +68,13 @@ def i18n_message(default = nil)
       message = warden_message || default || :unauthenticated
 
       if message.is_a?(Symbol)
-        I18n.t(:"#{scope}.#{message}", :resource_name => scope,
-               :scope => "devise.failure", :default => [message])
+        options = {}
+        options[:resource_name] = scope
+        options[:scope] = "devise.failure"
+        options[:default] = [message]
+        options = i18n_options(options) if respond_to?(:i18n_options, true)
+
+        I18n.t(:"#{scope}.#{message}", options)
       else
         message.to_s
       end

test/failure_app_test.rb

@@ -8,6 +8,12 @@ def fake_app
     end
   end
 
+  class FailureWithI18nOptions < Devise::FailureApp
+    def i18n_options(options)
+      options.merge(:name => 'Steve')
+    end
+  end
+
   def self.context(name, &block)
     instance_eval(&block)
   end
@@ -67,6 +73,11 @@ def call_failure(env_params={})
       assert_equal 'http://test.host/users/sign_in', @response.second["Location"]
     end
 
+    test 'uses custom i18n options' do
+      call_failure('warden' => OpenStruct.new(:message => :does_not_exist), :app => FailureWithI18nOptions)
+      assert_equal 'User Steve does not exist', @request.flash[:alert]
+    end
+
     test 'uses the proxy failure message as string' do
       call_failure('warden' => OpenStruct.new(:message => 'Hello world'))
       assert_equal 'Hello world', @request.flash[:alert]

test/support/locale/en.yml

@@ -1,4 +1,8 @@
 en:
+  devise:
+    failure:
+      user:
+        does_not_exist: "User %{name} does not exist"
   errors:
     messages:
       taken: "has already been taken"