topic Re: Using Arcade to display image attachment in pop-up in ArcGIS Online Questions

Using Arcade to display image attachment in pop-up

adrianmoisey1 — Fri, 29 Oct 2021 11:23:56 GMT

Hi, I am hoping someone can help me here, I am fairly new to Arcade.

I am trying to use arcade to show an image attachment in a pop-up in AGOL.

I can get it to work ok using the code below as long as all features have an attachment.

var Part1 = "https://services8.arcgis.com/OxmrsInax8iIPqdy/arcgis/rest/services/Civils_Data_Collection/FeatureServer/4/"

var ObjectID = $feature.OBJECTID

var Part2 = "/attachments/"

var AttachID = First(Attachments($feature)).ID

var Token = "?token=I HAVE REMOVED THIS.

return Part1 + ObjectID + Part2 + AttachID + Token

However, when I come across a feature without an attachment the code returns this.

Execution Error:Runtime Error: Cannot call member method on null. ID

Is there an easy way to deal with these null values?

Thanks in advance.

Re: Using Arcade to display image attachment in pop-up

JohannesLindner — Fri, 29 Oct 2021 12:28:04 GMT

var attach = Attachments($feature) if(Count(attach) == 0) { return "no attachments" } var Part1 = "https://services8.arcgis.com/OxmrsInax8iIPqdy/arcgis/rest/services/Civils_Data_Collection/FeatureSer..." var ObjectID = $feature.OBJECTID var Part2 = "/attachments/" var AttachID = First(attach).ID var Token = "?token=I HAVE REMOVED THIS. return Part1 + ObjectID + Part2 + AttachID + Token

Re: Using Arcade to display image attachment in pop-up

adrianmoisey1 — Tue, 02 Nov 2021 09:16:30 GMT

Thanks for the reply, I will give it a go.

Adrian

Re: Using Arcade to display image attachment in pop-up

SolanaFoo2 — Thu, 25 Apr 2024 18:38:49 GMT

How do you generate the token and ensure it works for the user??