Change publicID based on upload file name

marcel oh

February 22, 2019 15:58

hello, I am trying to use the preBatch hook to rename the publicId before uploading. (e.g:  filename "test.png" becomes "110020_test.png"  where 110020 is my application supplied user ID).

however, I could not find information about the usage of "cb" and "data" parameters.

i have already tried to change the publicId field itself on the "data" data structure (eg:  data.files[0].publicId = myUserId + "_" + data.files[0].name)  to no avail. the file gets a random name 

my upload preset - type=unsigned, use filename=OFF, disallow public ID =OFF, discard original filename=OFF

 

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  Stephen Doyle

  February 25, 2019 16:11

  Hi Marcel,

  I'm afraid it isn't possible to use the preBatch method in this way - it provides a hook to allow you to perform your application's own logic on the files before they're uploaded, but you can't set the public_id in the way you're describing here.

  For the use-case you've mentioned, I would recommend one of the following methods instead:

  • Use tags or context values on the upload to identify the user who uploaded the file
  • Accept the file from the user in javascript directly, then call the API using your own code to specify the public_id, folder, etc
  • In conjunction with tags or context as above, or via logging the Upload Widget response yourself, have us notify your server-side code when the file upload completes, and have some server-side code copy or rename the image to the required path:  https://cloudinary.com/documentation/upload_images#notifications_and_asynchronous_transformations`

  Please take a look and see if any of those options would work for you; I'd be happy to explain in more detail if you can let me know some more about your current workflow and which option above most closely matches it.

  Regards,

  Stephen

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