Adds fix for content-lenght value missing for files uploaded via Acti…

…onDispatch:Http::UploadedFile

lib/active_fedora/file.rb

@@ -254,6 +254,9 @@ def save(*)
         payload = behaves_like_io?(content) ? content.read : content
         headers = { 'Content-Type' => mime_type }
         headers['Content-Disposition'] = "attachment; filename=\"#{@original_name}\"" if @original_name
+        # Setting the content-lenght is required until we figure out why Faraday 
+        # is not doing this automatically for files uploaded via ActionDispatch.
+        headers['Content-Length'] = payload.size.to_s if payload.class.name == "ActionDispatch::Http::UploadedFile"
         ldp_source.content = payload
         if new_record?
           ldp_source.create do |req|

spec/integration/file_spec.rb

@@ -12,6 +12,36 @@
     end
   end
 
+  context "stand alone operation with UploadedFile" do
+
+    before(:all) do
+      module ActionDispatch
+        module Http
+          class UploadedFile
+            def initialize
+              @content = StringIO.new("hello world")
+            end
+            def bytesize
+              16
+            end
+            def read(a, b)
+              return @content.read(a, b)
+            end
+            def size
+              @content.length
+            end
+          end
+        end
+      end
+    end
+
+    it "should save" do
+      subject.content = ActionDispatch::Http::UploadedFile.new
+      subject.save
+      expect(subject).not_to be_new_record
+    end
+  end
+
   context "when autocreate is true" do
     before(:all) do
       class MockAFBase < ActiveFedora::Base