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Attaching file to ActiveStorage without HTTP

October 13, 2020

If you want to attach a file you generated on disk or downloaded from a user-submitted URL, you can do it like this.

@model.image.attach(
    io: File.open('/path/to/file'),
  filename: 'file.pdf',
  # content type is optional
  content_type: 'application/pdf'
)

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