Populate attribute table from other layers ArcGIS Online

[TomKearns]

I am publishing a web service with a point featureclass that has many attributes that I would like auto-populated from other layers when a new point is dropped. 

Work flow:  User creates a new point, attributes such as lat/lon, slope, aspect... are filled in.

I know I can write a script to do this with selections or intersects after all the points are in, but I would like for it to show during the editing session.  Is this possible?

Thanks.

[TimWitt2]

I don't think this is possible within ArcGIS Online. However in ArcGIS Desktop you could use the attribute assistant to do this for you, which is included here.

[TomKearns]

Thanks, I saw this referred to when doing a background investigation but was under the impression it was only in 10.2 and we are still on 10.1. The doc you sent says it is available, I will have to look into it further.

[TimWitt2]

I also wrote an article about it that explains it a little.

http://www.esri.com/esri-news/arcuser/fall-2013/~/media/Files/Pdfs/news/arcuser/1013/attribute.pdf

[Reynaldde_Castro]

We use FME by Safe Software to run a process that will update values of another field based on values from another.