Image visible in interface but not in portal

Question

Hello, 
 
 I have a portal which only has one interface. In the interface, I retrieve the data I need and store it in a local variable, I then use that local variable as the value for the document inside an imagefield component. In the interface, the data is successfully retrieved and is displayed in the imagefield component below. But in the portal, once I publish, the image is not visible. Does anyone know why that is? I already checked the service account permissions, I'll put them below as well. 
 
 Oh and also, "Register account" button doesn't work when I try to register a new account using the portal, even though in the process model, it does. I'm not sure if this also a service account permission problem or not 
 
 In interface, image is displayed successfully

In portal, there's not image

Code snippet 
 
 I retrieve the data from the record type and store it in a local variable

I display the image in the imagefield component

Service account permissions 
 Record types --> Viewer permission 
 Interface --> Viewer permission 
 Process model --> Initiator permissions 
 Document folder --> Viewer permissions 
 
 Any help is appreciated. Thank you!

Mike Schmitt · Accepted Answer

But what does the "register for account" button on the portal form do ? Does it launch a process? If so, is it actually getting launched when you click it?

Mike Schmitt · Answer

You're trying to retrieve the document by ID, then show that document ID in a viewer in the Portal. 
 This is something I'm not sure is compatible with Portals. The way Portals currently work (as best as I understand it) is they are totally separate from most things in your appian installation with a bare few exceptions (like, recently, database queries), but all other objects and references, etc, are packaged up and installed on the "external" server that hosts the portal. 
 Here you're trying to feed the interface an ID from a DB query, but then it's trying to just display that image by ID, even though the ID is an Appian FS document ID. You need to consider at this point that the portal does not have direct visibility into the Appian FS at runtime, by design. 
 I think the "supported" approach here would be to build a Web API that reaches the Appian filesystem and tries to request the document by ID, then display that locally. I'm not sure it'll work but it might be worth a shot. 
 Alternatively, if the number of "agreement" image files you have is pretty finite / small, you could potentially upload ALL of them to the portal, then use the retrieved document ID to decide (at runtime) which one you want to call. Something like this where they end up in the portal's package would probably be the easiest approach, honestly.

Mike Schmitt · Answer

Tamara Saadeh said: How would you go about uploading all of the documents to the portal 
 Presumably all of these documents exist as Appian objects. How many are there? If there are maybe 5, up to maybe 10, then no big deal. If there are dozens or hundreds, then I would suggest alternate options instead of the following approach. 
 You would need an individual constant for each image. Alternatively if that's burdensome, a "document" type constant set to "multiple" that you add each image directly to, as long as the list will be fairly static over time, is manageable (just document which index each image resides at in the constant's list). Then in your interface, you can use if() logic (or an a!match() statement) to manually check what the queried ID is, compare it against that value in the constant, then reference it directly. 
 (Before doing much work here, I'd suggest trying this approach with just a single image the first time, to make sure it'll even work). If you're VERY lucky, then simply getting the images rolled into the precedents of the portal object might allow you to display them directly by ID - sadly i'm fuzzy on how this would work and haven't tried it myself yet.

Mike Schmitt · Answer

If it's going to be fairly un-static, then I'd consider looking into alternative approaches honstely. Now I must update with what I've just found in my own personal test (this is my CE 24.1 version - it'd be good if you can confirm your appian version for comparison?) - I had an image file that I'd added to the app package for my test portal (but not already otherwise referenced in the portal manually by any means) - I was able to add an image field using a!documentImage into my existing test form, and upon publication, it showed up on my form just fine. In yours, please try swapping out the queried value for an example manual document ID, just temporarily to see what happens. There may be easier ways to accomplish your use case as long as things are done carefully.

Mike Schmitt · Answer

Tamara Saadeh said: but the queried data isn't working 
 This is going to seem silly, but how sure are you that it's getting a valid image id as a result? Are you SURE they're always images? Also, i'm not sure but it's possible the documentImage function has a funny reaction with arrays (which queried data is inherently) - so you can always try calling index(local!queriedData, 1) for instance. 
 Tamara Saadeh said: I click the "Register for account" button and it doesn't work. 
 You didn't really specify where this goes wrong. Does the process model launch or not? If it launches, what happens internally - does it error out on a certain node? Can you post a screenshot of the process instance?

Image visible in interface but not in portal

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