add

app/views/issues/show.json.jbuilder

@@ -24,6 +24,7 @@ json.be_depended_issues @be_depended_issues_array
 json.depended_issues @depended_issues_array
 json.issue_classify @issue.issue_classify
 json.branch_name @issue.branch_name
+json.journals_count @issue.get_journals_size
 json.attachments do
   json.array! @issue_attachments do |attachment|
     json.partial! "attachments/attachment_simple", locals: {attachment: attachment}