topic Re: definition expression in Web AppBuilder Custom Widgets Questions

definition expression

LefterisKoumis — Wed, 27 May 2015 13:50:30 GMT

Hello. I am newbie in the web app builder area. How can I apply a definition expression on a layer to draw only the features that meets the criteria. I looked into the layerInfos in the json file but I am not sure iof you can you use a definition expression. Thanks.

Re: definition expression

RickeyFight — Wed, 27 May 2015 13:54:29 GMT

Lefteris,

This thread shows how this can be done.

Custom Floor switcher widget WAB

Re: definition expression

LefterisKoumis — Wed, 27 May 2015 15:14:50 GMT

Thank you. I see how is done in the code. I was hoping to see a configuration file (perhaps json file)that you can define the layers that you use in the map and the definition expression to define which datasets to display. I am trying to migrate to JS from FLEX where you can do this in the configuration file.

Suggestions?

Re: definition expression

RickeyFight — Wed, 27 May 2015 15:21:52 GMT

Lefteris,

I was working on this to make it a widget but I have been distracted for a few weeks.

Maybe Robert Scheitlin, GISP can help you.

Also look at some examples here: Web AppBuilder Developer Edition – Customization Resource List

Re: definition expression

ZhifangWang — Wed, 27 May 2015 15:23:52 GMT

Hi Lefteris,

Have you tried the Query Widget? I think you can filter a layer in Query Widget UI and also in the configuration json file.

Query widget—Web AppBuilder for ArcGIS | ArcGIS

Query—Web AppBuilder for ArcGIS (Developer Edition) | ArcGIS for Developers

Re: definition expression

DanielStoelb — Wed, 27 May 2015 22:19:05 GMT

Lefteris,

You might want to check out the following: LocalLayerWidget and AccessifizrWidget Additionally, there is the possibility of modifying the code to do definition expressions. Check out this thread for details: Local Layer Widget .

Re: definition expression

JeremieCornet1 — Thu, 28 May 2015 22:49:11 GMT

You can filter your layers in the AGOL (or PORTAL) map used in your app.

Re: definition expression

LefterisKoumis — Fri, 29 May 2015 15:42:17 GMT

Thank you. Robert's response to your question provided the info I was looking for.

Re: definition expression

StanMcShinsky — Mon, 01 Jun 2015 15:34:25 GMT

This would be better for me too.

-Stan

Re: definition expression

LefterisKoumis — Tue, 02 Jun 2015 15:15:34 GMT

Yes, That's correct. However, in my case where I have multiple layers is a lot easier to modify the definition expression in a configuration file rather than creating a map for each case.

Thank you.