调整

app/views/games/picture_display.json.jbuilder

@@ -21,7 +21,7 @@ if @type == "image"
 elsif @type == "html"
   json.iframe_src File.read("#{@user_path}/#{@user_picture[0]}")&.html_safe
 elsif @type == "txt"
-  json.contents @contents.html_safe
+  json.contents @contents.to_s
 elsif @type =="qrcode"
   json.qrcode_str @qrcode_str
 elsif @type == "mp3" || @type == "mp4"

app/views/student_works/edit.json.jbuilder

@@ -1,7 +1,6 @@
 json.partial! "homework_commons/homework_public_navigation", locals: {homework: @homework, course: @course, user: @current_user}
 json.work_id @work.id
 json.description @work.description
-json.
 
 json.attachments @work.attachments do |atta|
   json.partial! "attachments/attachment_simple", locals: {attachment: atta, delete: @work.delete_atta(atta)}