80 lines
2.9 KiB
Ruby
80 lines
2.9 KiB
Ruby
#
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# Copyright (C) 2011 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Attaches a file generally to another file, using the attachment_fu gateway.
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class FileInContext
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class << self
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def queue_files_to_delete(queue=true)
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@queue_files_to_delete = queue
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end
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def destroy_queued_files
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if @queued_files && !@queued_files.empty?
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Attachment.send_later_if_production(:destroy_files, @queued_files.map(&:id))
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@queued_files.clear
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end
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end
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def destroy_files(files)
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if @queue_files_to_delete
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@queued_files ||= []
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@queued_files += files
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else
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files.each{ |f| f.destroy }
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end
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end
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def attach(context, filename, display_name: nil, folder: nil, explicit_filename: nil, allow_rename: false, md5: nil, migration_id: nil)
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display_name ||= File.split(filename).last
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if md5 && folder && !allow_rename
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scope = context.attachments.where(:display_name => display_name, :folder => folder, :md5 => md5).not_deleted
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if migration_id
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scope = scope.where(:migration_id => [migration_id, nil]) # either find a previous copy or an unassociated match
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end
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existing_att = scope.take
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if existing_att
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if migration_id && existing_att.migration_id.nil? # can set an existing unassociated attachment to the new migration_id
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existing_att.update_attribute(:migration_id, migration_id)
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end
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return existing_att
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elsif migration_id
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allow_rename = true # prevent overwriting if there's an existing matching filename that has a different migration_id
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end
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end
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uploaded_data = Rack::Test::UploadedFile.new(filename, Attachment.mimetype(explicit_filename || filename))
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@attachment = Attachment.new(:context => context, :display_name => display_name, :folder => folder)
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Attachments::Storage.store_for_attachment(@attachment, uploaded_data)
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@attachment.filename = explicit_filename if explicit_filename
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@attachment.migration_id = migration_id
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@attachment.set_publish_state_for_usage_rights
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@attachment.save!
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destroy_files(@attachment.handle_duplicates(allow_rename ? :rename : :overwrite, :caller_will_destroy => true))
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@attachment
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ensure
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uploaded_data.close if uploaded_data
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end
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end
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end
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