Generate and Download document from external system in single click in Appian

Question

I have an integration with S3 bucket, which is a type of modify data. This integration pull the documents and store in folder. Now I need to provide a link to user, so that user can click the link and get the documents download. How can I do it in a single click.

Kumar Agniwesh · Answer

Step1 : Create a process model to download and store the document in a folder. 
 Step 2 Create a Post webApi to trigger this process model and this webApi should return the documentId of the downloaded document 
 Step 3 Create a integration object to trigger this webApi and this should be just returning the documentId again 
 Step 4 Create a get webApi. In this webApi call the integration object and in response use 
 a!httpResponse( statusCode: 307, headers: { a!httpHeader(name: "Location", value: local!redirect) } ) 
 
 where local!redirect : document(documentID,"url"). 
 
 Step 5 : Call this webApi as a link in your interface.

Mike Schmitt · Answer

Agreed with Stefan - this sort of thing really requires a 2-click approach to maintain code cleanliness, maintainability, flexibility, etc.

Soma · Answer

You cannot do it in single click but you can have 2 links 
 1. Fetch Document - Link to call the integration and bring the documents inside appian using dynamic link 
 2. Click to Download - Link to download the document using document download link

Generate and Download document from external system in single click in Appian

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