CORS Issue on uploading files to Workfront API using Firefly app | Community
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shelly-goel
Adobe Employee
shelly-goelAdobe Employee
Adobe Employee
May 5, 2021
Question

CORS Issue on uploading files to Workfront API using Firefly app

  • May 5, 2021
  • 1 reply
  • 2008 views

Getting below error even though appropriate headers are set

 

Access to fetch at '<workfront url>/attask/api/v12.0/upload' from origin 'https://localhost:9080' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

 

headers being set:

headers: {
        'apiKey': '<key>',
        'Content-Type': 'multipart/form-data',
        'Access-Control-Allow-Origin': '*'
      }
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1 reply

D
Adobe Employee
duynguyen_adobeAdobe Employee
Adobe Employee
May 5, 2021

@shelly-goel - the CORS policy is set by the server (workfront in this case), and you can not bypass it by changing your UI code.

The recommended route would be: write a Runtime action to call the workfront API, processes the data, and returns it to the UI for rendering.

    shelly-goel
    Adobe Employee
    shelly-goelAdobe EmployeeAuthor
    Adobe Employee
    May 6, 2021
    It doesn't accept the URL, it needs the file object. It accepts "multipart/form-data"
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