Module: Bulkrax::DownloadBehavior

Included in:
ExportersController, ImportersController
Defined in:
app/controllers/concerns/bulkrax/download_behavior.rb

Instance Method Summary collapse

Instance Method Details

#content_head ⇒ Object

render an HTTP HEAD response



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 37

def content_head
  response.headers['Content-Length'] = file.size
  head :ok, content_type: download_content_type
end

#content_options ⇒ Object

Create some headers for the datastream



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 32

def content_options
  { disposition: 'attachment', type: download_content_type, filename: file_name }
end

#download_content_type ⇒ Object 



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 18

def download_content_type
  'application/zip'
end

#file ⇒ Object

The following download code is based on github.com/samvera/hydra-head/blob/main/hydra-core/app/controllers/concerns/hydra/controller/download_behavior.rb



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 8

def file
  @file ||= File.open(file_path, 'r')
end

#file_name ⇒ String

Override this if you’d like a different filename

Returns:

  • (String) —

    the filename



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 14

def file_name
  file_path.split('/').last
end

#prepare_file_headers ⇒ Object 



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 48

def prepare_file_headers
  send_file_headers! content_options
  response.headers['Content-Type'] = download_content_type
  response.headers['Content-Length'] ||= file.size.to_s
  # Prevent Rack::ETag from calculating a digest over body
  response.headers['Last-Modified'] = File.mtime(file_path).utc.strftime("%a, %d %b %Y %T GMT")
  self.content_type = download_content_type
end

#send_content ⇒ Object 



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 22

def send_content
  response.headers['Accept-Ranges'] = 'bytes'
  if request.head?
    content_head
  else
    send_file_contents
  end
end

#send_file_contents ⇒ Object 



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# File 'app/controllers/concerns/bulkrax/download_behavior.rb', line 42

def send_file_contents
  self.status = 200
  prepare_file_headers
  send_file file
end