I am working on building an API front end for a 3rd Party API. In addition
to collecting the file from my user, I also need to post the file to the
3rd Party Service.
The only way I have been able to get the actual file contents is to
download it again after it has been saved.
class Template < ApplicationRecord
has_one_attached :pv_file
...
post_body << self.pv_file.blob.download
I want to have a before create filter that throws an error if the 3rd Party
API rejects the file (e.g. wrong format, service unavailable, etc), but the
only way I have found to access the file content is by downloading it again.
How can we access the actual file content before it has been saved and
uploaded?
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