previous version of a Document in SAIL

RE: previous version of a Document in SAIL

Mike Schmitt — Fri, 31 May 2024 12:58:35 GMT

This post is from over 7 years ago. Many things about this topic have changed in the meantime (for instance, i believe there are some functions to allow looking up of specific document version IDs, though I don't remember very well off the top of my head). I'd advise you to either search out more recent posts on the issue, or start your own new post to ask.

RE: previous version of a Document in SAIL

yashig2399 — Fri, 31 May 2024 07:51:31 GMT

what approach have you taken to solve this. I have same requirement

RE: previous version of a Document in SAIL

Ram — Fri, 03 Feb 2017 22:37:00 GMT

Hi Francesco,

There is a plugin in shared components which gives metadata of a document please refer the below link.
forum.appian.com/.../summary

The only problem is that you cannot download the earlier versions of the documents since the old versions returned by the plugin have the same doc id.

I had the same scenario in my project and we opted for database to manage document versions. Lets see what other practitioners say.

RE: previous version of a Document in SAIL

francescop389 — Fri, 03 Feb 2017 21:40:41 GMT

hi @akkramanir,
thanks for suggestion, but that's exactly what I was trying to avoid with my question :)
in my use case I already have a relationship between different documents, so I don't want to add different rows in the DB just for the version change.
what I need is to use the Appian versioning, and when a user select a document from a grid in SAIL, to show somewhere else (in another grid maybe) the list of previous version for that document.. but without having different documents as version

RE: previous version of a Document in SAIL

Ram — Fri, 03 Feb 2017 20:16:24 GMT

Adding to the above, since you have doc id's you can use below code in an expression and iterate it.
a!linkField(
label: "",
links: a!documentDownloadLink(
document:
)
)
This will be the better approach for creating document download link

RE: previous version of a Document in SAIL

Ram — Fri, 03 Feb 2017 20:12:54 GMT

Hi Francesco,

The work around for your approach is that first you need to save each document individualy i mean don't let appian to create document versions.
Save all the related document ids in database and keep a reference column so that you can pull all the related document ids
Then you need to construct a URL to download the document with obtained doc id's. The URL for downloading documents can be seen below

forum.appian.com/.../106162

You can get "forum.appian.com/.../" using rule!APN_getSiteUrl() or you can keep it in a constant and this should be changed from environment to environment witn new URL

And keep the "doc/"" in a appian constant

Now construct the URL in a expression rule say getDocumentVersions() which takes document id as input. Code for the rule will be in below format
rule!APN_getSiteUrl() & doc/ & documentId

Now you can use apply() to iterate newly created getDocumentVersions() rule for document ids obtained from DB

Hope this will help you.