Cleanup Banzai ExternalIssueReferenceFilter

lib/banzai/filter/external_issue_reference_filter.rb

@@ -54,6 +54,8 @@ module Banzai
         doc
       end
 
+      private
+
       # Replace `JIRA-123` issue references in text with links to the referenced
       # issue's details page.
       #
@@ -63,21 +65,14 @@ module Banzai
       # Returns a String with `JIRA-123` references replaced with links. All
       # links have `gfm` and `gfm-issue` class names attached for styling.
       def issue_link_filter(text, link_content: nil)
-        project = context[:project]
-
         self.class.references_in(text, issue_reference_pattern) do |match, id|
-          ExternalIssue.new(id, project)
-
           url = url_for_issue(id, project, only_path: context[:only_path])
-
-          title = "Issue in #{project.external_issue_tracker.title}"
           klass = reference_class(:issue)
           data  = data_attribute(project: project.id, external_issue: id)
-
           content = link_content || match
 
           %(<a href="#{url}" #{data}
-               title="#{escape_once(title)}"
+               title="#{escape_once(issue_title)}"
                class="#{klass}">#{content}</a>)
         end
       end
@@ -94,7 +89,13 @@ module Banzai
         external_issues_cached(:external_issue_reference_pattern)
       end
 
-      private
+      def project
+        context[:project]
+      end
+
+      def issue_title
+        "Issue in #{project.external_issue_tracker.title}"
+      end
 
       def external_issues_cached(attribute)
         cached_attributes = Gitlab::SafeRequestStore[:banzai_external_issues_tracker_attributes] ||= Hash.new { |h, k| h[k] = {} }