fixes #3824: render tag requests dynamically in the forum post

refactoring

app/helpers/forum_topics_helper.rb

@@ -6,4 +6,49 @@ module ForumTopicsHelper
   def available_min_user_levels
     ForumTopic::MIN_LEVELS.select { |name, level| level <= CurrentUser.level }.to_a
   end
+
+  def tag_request_message(obj)
+    if obj.is_a?(TagRelationship)
+      if obj.is_active?
+        return "The #{obj.relationship} ##{obj.id} [[#{obj.antecedent_name}]] -> [[#{obj.consequent_name}]] is active."
+      elsif obj.is_retired?
+        return "The #{obj.relationship} ##{obj.id} [[#{obj.antecedent_name}]] -> [[#{obj.consequent_name}]]  has been retired"
+      elsif obj.is_pending?
+        return "The #{obj.relationship} ##{obj.id} [[#{obj.antecedent_name}]] -> [[#{obj.consequent_name}]] is pending approval."
+      elsif obj.is_errored?
+        return "The #{obj.relationship} ##{obj.id} [[#{obj.antecedent_name}]] -> [[#{obj.consequent_name}]] (#{relationship} failed during processing."
+      end
+    end
+
+    if obj.is_a?(BulkUpdateRequest)
+      if obj.is_approved?
+        return "The bulk update request ##{obj.id} is active.\n\n[expand]#{obj.script_with_links}[/expand]"
+      elsif obj.is_pending?
+        return "The \"bulk update request ##{obj.id}\":/bulk_update_requests/#{obj.id} is pending approval.\n\n[expand]#{obj.script_with_links}[/expand]"
+      elsif obj.is_rejected?
+        return "The bulk update request ##{obj.id} has been rejected.\n\n[expand]#{obj.script_with_links}[/expand]"
+      end
+    end
+  end
+
+  def parse_embedded_tag_request_text(text)
+    # for dev mode, prime these
+    if Rails.env.development?
+      [TagAlias, TagImplication]
+    end
+
+    [*TagRelationship.subclasses, BulkUpdateRequest].each do |tag_request|
+      text.gsub!(tag_request.embedded_pattern) do |match|
+        begin
+          obj = tag_request.find($~[:id])
+          tag_request_message(obj) || match
+
+        rescue ActiveRecord::RecordNotFound
+          match
+        end
+      end
+    end
+
+    text
+  end
 end