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-rw-r--r--activestorage/lib/active_storage/downloading.rb26
1 files changed, 26 insertions, 0 deletions
diff --git a/activestorage/lib/active_storage/downloading.rb b/activestorage/lib/active_storage/downloading.rb
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+++ b/activestorage/lib/active_storage/downloading.rb
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+# frozen_string_literal: true
+
+module ActiveStorage
+ module Downloading
+ private
+ # Opens a new tempfile in #tempdir and copies blob data into it. Yields the tempfile.
+ def download_blob_to_tempfile # :doc:
+ Tempfile.open("ActiveStorage", tempdir) do |file|
+ download_blob_to file
+ yield file
+ end
+ end
+
+ # Efficiently downloads blob data into the given file.
+ def download_blob_to(file) # :doc:
+ file.binmode
+ blob.download { |chunk| file.write(chunk) }
+ file.rewind
+ end
+
+ # Returns the directory in which tempfiles should be opened. Defaults to +Dir.tmpdir+.
+ def tempdir # :doc:
+ Dir.tmpdir
+ end
+ end
+end