Renamed oldrev/newrev to before/after

app/services/git_tag_push_service.rb

@@ -11,8 +11,8 @@ class GitTagPushService
   def create_push_data(oldrev, newrev, ref)
     data = {
       ref: ref,
-      oldrev: oldrev,
-      newrev: newrev,
+      before: oldrev,
+      after: newrev,
       user_id: user.id,
       user_name: user.name,
       project_id: project.id,

spec/services/git_tag_push_service_spec.rb

@@ -20,8 +20,8 @@ describe GitTagPushService do
     subject { @push_data }
 
     it { should include(ref: @ref) }
-    it { should include(oldrev: @oldrev) }
-    it { should include(newrev: @newrev) }
+    it { should include(before: @oldrev) }
+    it { should include(after: @newrev) }
     it { should include(user_id: user.id) }
     it { should include(user_name: user.name) }
     it { should include(project_id: project.id) }