topic Re: Display Field Expression in ArcGIS REST APIs and Services Questions

Display Field Expression

SandeepKapadia — Wed, 16 Nov 2011 15:52:54 GMT

Hi

We have added a expression "Some String: " & [COUNTYNAME] to a layer in mxd. I have published this mxd as a service and when I see the REST end point for this service, the "Display Field" shows "COUNTYNAME" and not the expression.

How can make the REST to display the expression?

FYI: I have restarted the services and cleared the REST cache.

Sandeep

Re: Display Field Expression

TanuHoque — Wed, 16 Nov 2011 16:05:48 GMT

REST API does not support Display Expression.

Re: Display Field Expression

SandeepKapadia — Wed, 16 Nov 2011 16:14:13 GMT

Then where does it get the field name "COUNTYNAME" from?

Re: Display Field Expression

RaviNarayanan — Thu, 17 Nov 2011 14:32:46 GMT

Sandeep,

Please see this help topic on how a display field name is chosen.

http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?TopicName=Setting_field_properties,_aliases,_and_table_display_options

The primary display field defaults to the first field of string type that contains the text "name" (case insensitive) in the field name. If no "name" field exists, the primary display field defaults to the first field of string type, then the first field of integer type, then the first field of any type. You can change the primary display field from the Fields tab of the Layer or Table Properties dialog box

Here is a similar help topic for a recent version:

http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//005s00000042000000.htm

Re: Display Field Expression

DavidWilton — Tue, 22 Nov 2011 12:38:34 GMT

Even without an expression, just setting the field name in the 'display expression' isn't picked up either. I did find that the 'value' was based upon the selected field. Seems strange

Edit:

I hadn't cleared my REST cache

http://denverdemo.esri.com/ArcGIS/SDK/REST/admin.html

Re: Display Field Expression

RaviNarayanan — Tue, 22 Nov 2011 13:15:48 GMT

David, Glad you were able to identify the cause. In the upcoming 10.1 version, the REST cache will be automatically managed each time a service is updated, so this will not be an issue.

Re: Display Field Expression

TanuHoque — Mon, 28 Nov 2011 16:13:39 GMT

Just to clarify: when MapService sees a DisplayExpression, it uses the first field name used in that DisplayExpression. In your cases, your display expression ("Some String: " & [COUNTYNAME]) contains [COUNTYNAME] that's where [COUNTYNAME] is coming from...

Sorry about the late response.

Re: Display Field Expression

BillFox — Mon, 23 May 2016 23:30:28 GMT

As of v10.4 this issue is "In Product Plan" The Esri Development team has plans to address this issue or request in a future release of the software.

[NIM072888: Published map service does not respect the display expression applied to the layer]

Re: Display Field Expression

PascualBenito — Wed, 28 Jun 2017 16:29:29 GMT

Thanks billfox‌. Do you know if this update made it into 10.5?

Re: Display Field Expression

NicolasGIS — Tue, 31 Oct 2017 12:52:21 GMT

Hello Bill,

Do you have any link for this enhancement NIM072888 ?

I can't find it anywhere so I can't follow its status.

Is there any update (10.5, 10.6 ...) ?

Thanks,