[webui] Get rid of ActiveXML in PatchinfoController#get_issue_sum

src/api/app/controllers/webui/patchinfo_controller.rb

@@ -274,22 +274,24 @@ def get_issue_sum(tracker, issueid)
     else
       bug = issueid
     end
-    path = "/issue_trackers/#{CGI.escape(tracker)}"
-    tracker_result = ActiveXML::Node.new(frontend.transport.direct_http(URI(path), method: 'GET'))
-    if bug.match(/^#{tracker_result.value(:regex)}$/)
-      begin
-        path << "/issues/#{CGI.escape(issueid)}"
-        result = ActiveXML::Node.new(frontend.transport.direct_http(URI(path), method: 'GET'))
-        unless result.value(:summary)
-          path << "?force_update=1"
-          result = ActiveXML::Node.new(frontend.transport.direct_http(URI(path), method: 'GET'))
-        end
-        return (result.value(:summary) || '').gsub(/\\|'/) { '' }
-      # Add no summary if a connection to bugzilla doesn't work e.g. in the testsuite
-      rescue ActiveXML::Transport::Error
-        return ""
+
+    issue_tracker = IssueTracker.find_by(name: tracker)
+    return nil unless issue_tracker
+
+    if bug.match(/^#{issue_tracker.regex}$/)
+      issue = Issue.find_or_create_by_name_and_tracker( issueid, issue_tracker.name )
+      if issue && issue.summary.blank?
+        issue.fetch_updates
       end
+      if issue.summary
+        return issue.summary.gsub(/\\|'/) { '' }
+      else
+        return ''
+      end
+    else
+      return nil
     end
+    return ''
   end
 
   private