Add addtional field to hosted feature service that is part of a joined feature layer view

Sven_Harpering

Hi,

we got a question from one of our customers. The customers has two hosted services. One table and feature service. The customer used the tool "Join Features" in ArcGIS Online with the option to create a layer view as an result.

The problem is that the customer now wants to add a field to one of the datasets and the "Add Field" button is not available. In our opionion this is correct so far, because there is this known limitation: 

• You cannot add fields to or delete fields from hosted feature layers that have a dependent joined feature layer view.

Is there any possible way to add a field without deleting the view? The problem is, if the customer deletes the view, he has to configure all applications again.

Best

Sven

MobiusSnake

Hi Sven, I don't know how to add a field without deleting the view, but I've run into this before and I did the following to mitigate the pain of reconfiguring apps:

• Take note of the view's Item ID and URL (copy them into a text editor or wherever)
• Delete the view
• Add the field
• Re-create the view
• Write a script using the Python API that does the following for each web map and app that references the old view:
  • Get the map/app's item and called Item.get_data() to pull down it's JSON definition
  • Do a find/replace on the JSON to replace the old view's URL and Item ID with the new equivalents
  • Call Item.update() to push the modified JSON definition back in place