Canvas - Delete export files

cleanup.rb

Attachment.where(workflow_state:'zipped').find_each do |attachment|
  delete_attachment attachment
};nil

def delete_attachment(attachment)
  # Don't delete parent Attachments
  return if attachment.children.present?

  # Delete associated ContentExports
  content_export_for(attachment).try(:delete)
  
  # Delete the db row. Trigger callbacks, then remove the row
  attachment.destroy
  attachment.delete

  # Delete file on disk and containing folder, unless there is a parent Attachment
  unless attachment.root_attachment_id    
    path = File.dirname(attachment.full_filename)
    FileUtils.rm_rf(path) if File.directory? path
  end
  
  true
end

def content_export_for(attachment)
  ContentExport.where(attachment_id:attachment.id).first
end

We are doing open source projects about canvas, may I have more information about the main class of attachment?

Hi @mayng0702, for more information about the attachment class in Canvas LMS, check the main repo, specifically the Attachment model.

The concepts that are approached by this file (deleting unused files in Canvas LMS CV from disk) are elaborated in a module that can be found here.

Thanks for your reply. I will study it further. 在 2022年10月4日週二 01:44，christopher-b ***@***.***> 寫道：

…

***@***.**** commented on this gist. ------------------------------ Hi @mayng0702 <https://github.com/mayng0702>, for more information about the attachment class in Canvas LMS, check the main repo <https://github.com/instructure/canvas-lms>, specifically the Attachment model <https://github.com/instructure/canvas-lms/blob/master/app/models/attachment.rb> . The concepts that are approached by this file (deleting unused files in Canvas LMS CV from disk) are elaborated in a module that can be found here <https://github.com/christopher-b/canvas-file-zapper>. — Reply to this email directly, view it on GitHub <https://gist.github.com/072369296c4a6ea78b6f73edad5d278b#gistcomment-4323203>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AONMLHCLDMNUX3LLOD3C52LWBMLQZANCNFSM6AAAAAAQ3NMEYU> . You are receiving this because you were mentioned.Message ID: ***@***.***>