old_contents: from django.contrib import admin
  
  from guardian.admin import GuardedModelAdmin
  
  from studies.models import Response, ResponseLog, Study, StudyLog, Feedback
  
  
  class StudyAdmin(GuardedModelAdmin):
      pass
  
  class ResponseAdmin(GuardedModelAdmin):
      pass
  
  class FeedbackAdmin(GuardedModelAdmin):
      pass
  
  class StudyLogAdmin(GuardedModelAdmin):
      pass
  
  class ResponseLogAdmin(GuardedModelAdmin):
      pass
  
  admin.site.register(Study, StudyAdmin)
  admin.site.register(Response, ResponseAdmin)
  admin.site.register(StudyLog, StudyLogAdmin)
  admin.site.register(ResponseLog, ResponseLogAdmin)
  admin.site.register(Feedback, FeedbackAdmin)
  
new_contents: from django.contrib import admin
  
  from guardian.admin import GuardedModelAdmin
  
  from studies.models import Response, ResponseLog, Study, StudyLog, Feedback, StudyType
  
  
  class StudyAdmin(GuardedModelAdmin):
      pass
  
  class ResponseAdmin(GuardedModelAdmin):
      pass
  
  class FeedbackAdmin(GuardedModelAdmin):
      pass
  
  class StudyLogAdmin(GuardedModelAdmin):
      pass
  
  class ResponseLogAdmin(GuardedModelAdmin):
      pass
  
  class StudyTypeAdmin(GuardedModelAdmin):
      pass
  
  admin.site.register(Study, StudyAdmin)
  admin.site.register(Response, ResponseAdmin)
  admin.site.register(StudyLog, StudyLogAdmin)
  admin.site.register(ResponseLog, ResponseLogAdmin)
  admin.site.register(Feedback, FeedbackAdmin)
  admin.site.register(StudyType, StudyTypeAdmin)
  
subject: Add StudyType to admin app.