Pass an Integer or a Time to #expiring_url

lib/paperclip/storage/fog.rb

@@ -139,6 +139,7 @@ module Paperclip
       end
 
       def expiring_url(time = (Time.now + 3600), style = default_style)
+        time = convert_time(time)
         if directory.files.respond_to?(:get_http_url)
           expiring_url = directory.files.get_http_url(path(style), time)
 
@@ -171,6 +172,13 @@ module Paperclip
 
       private
 
+      def convert_time(time)
+        if time.is_a?(Fixnum)
+          time = Time.now + time
+        end
+        time
+      end
+
       def dynamic_fog_host_for_style(style)
         if @options[:fog_host].respond_to?(:call)
           @options[:fog_host].call(self)

test/storage/fog_test.rb

@@ -317,6 +317,16 @@ class FogTest < Test::Unit::TestCase
         end
       end
 
+      context "generating an expiring url" do
+        should "generate the same url when using Times and Integer offsets" do
+          rebuild_model(@options)
+          dummy = Dummy.new
+          dummy.avatar = StringIO.new('.')
+
+          assert_equal dummy.avatar.expiring_url(1234), dummy.avatar.expiring_url(Time.now + 1234)
+        end
+      end
+
       context "with an invalid bucket name for a subdomain" do
         setup do
           rebuild_model(@options.merge(:fog_directory => "this_is_invalid"))

test/storage/s3_test.rb

@@ -549,6 +549,10 @@ class S3Test < Test::Unit::TestCase
         assert_equal(@dummy.avatar.url, @dummy.avatar.expiring_url)
       end
     end
+
+    should "generate the same url when using Times and Integer offsets" do
+      assert_equal @dummy.avatar.expiring_url(1234), @dummy.avatar.expiring_url(Time.now + 1234)
+    end
   end
 
   context "Generating a url with an expiration for each style" do