topic Re: Local Layer Widget in Web AppBuilder Custom Widgets Questions

Local Layer Widget

DanielStoelb — Tue, 21 Apr 2015 14:37:32 GMT

I'm having issues trying to figure out how to set up a definition query for the layers that I'm loading into the local layer widget without having to redo the service from the server. Do you have an idea on how this can be done using the local layer widget code?

Re: Local Layer Widget

RobertScheitlin__GISP — Sun, 12 Dec 2021 08:43:22 GMT

Daniel,

There is not an option for this currently in the widget, but you can add it in code pretty easily.

In the Widget.js file for layer type 'FEATURE' just add these lines:

            if(layer.hasOwnProperty('definitionExpression')){
              lOptions.definitionExpression = layer.definitionExpression;
            }

Then in the json add:

"definitionExpression": "some valid SQL expression",

Let me know if you need to add to a layer type other than 'FEATURE'

Re: Local Layer Widget

DanielStoelb — Tue, 21 Apr 2015 16:03:09 GMT

Robert,

Thanks for the code. That worked. Is it possible to see what it would be for other layer types, such as dynamic?

Re: Local Layer Widget

RobertScheitlin__GISP — Sun, 12 Dec 2021 08:43:25 GMT

Daniel,

'DYNAMIC' would look like this. Add these line right before "lLayer.on('load',function(evt){"

            if(layer.definitionExpressions){
              var layerDefinitions = [];
              array.forEach(layer.definitionExpressions, function(_def){
                layerDefinitions[parseInt(_def.id)] = _def.sql;
              });
              lLayer.setLayerDefinitions(layerDefinitions);
            }

And the JSON would look like:

        "definitionExpressions": [
          {"id": 1, "sql": "ZONE = 'A'"},
          {"id": 6, "sql": "POP00_SQMI >= 6368"}
        ],

Re: Local Layer Widget

LefterisKoumis — Tue, 02 Jun 2015 18:28:03 GMT

Hello Robert. I applied a definitionexpression but it does seem to be working. Ideas? Thanks.

My service is a feature service and I added this script in widget.js

.......

lLayer = new FeatureLayer(layer.url, lOptions);

if(layer.hasOwnProperty('definitionExpression')){

lOptions.definitionExpression = layer.definitionExpression;

}

lLayer.on('load',function(evt){

......

and in json:

"url": "http://10.112.5.83/arcgis/rest/services/Biology/CNDDB/MapServer/0",

.......

"definitionExpression": [

{"id":0, "sql": "DIST=10"}],

.......

Re: Local Layer Widget

RobertScheitlin__GISP — Tue, 02 Jun 2015 18:34:01 GMT

Lefteris,

The code you are applying is for a Dynamic layer and I see that you are attempting to apply it to a FeatureLayer. You would need to follow my reply that is marked as the answer and not my last reply that was specific to 'DYNAMIC' layer type.

Re: Local Layer Widget

LefterisKoumis — Tue, 02 Jun 2015 19:41:37 GMT

Robert, the widget.js script I posted is indeed from the response marked as answer.

and I changed the json to:

"definitionExpression": "DIST=10",

but still no filtering.

Thanks.

Re: Local Layer Widget

RobertScheitlin__GISP — Tue, 02 Jun 2015 19:50:55 GMT

Lefteris,

Are you editing the config_Local Layer Widget.json in the [install dir]\server\apps\[app num]\configs\LocalLayer folder?

Re: Local Layer Widget

LefterisKoumis — Tue, 02 Jun 2015 19:55:28 GMT

You mean:

C:\arcgis-web-appbuilder-1.1\server\apps\4\widgets\LocalLayer?

Yes, I do.

There is no configs folder under the app id.

Re: Local Layer Widget

RobertScheitlin__GISP — Tue, 02 Jun 2015 20:03:39 GMT

Lefteris,

If you do not have a configs folder under the apps\4\ then you are probably not using version 1.1 of WAB and that is an issue.

Re: Local Layer Widget

LefterisKoumis — Tue, 02 Jun 2015 20:14:32 GMT

Well that's weird. I downloaded the arcgis-web-appbuilder-1.1.zip file from the website and the filename indicates is the 1.1 version.

when you unzip, the buildnum.txt shows the build number as :

2015-03-16_18-39-33_#354

Is this the 1.1 version?

Re: Local Layer Widget

RobertScheitlin__GISP — Tue, 02 Jun 2015 20:36:01 GMT

Lefteris,

Yep that is the right build number and info... But this does not explain why you do not have a configs folder under each of your apps folders once you have saved your project.

Re: Local Layer Widget

LefterisKoumis — Tue, 02 Jun 2015 23:03:17 GMT

ok, this is bizarre. I reinstalled the 1.1 version and still the configs folder is not there!!!!

Re: Local Layer Widget

RobertScheitlin__GISP — Wed, 03 Jun 2015 00:46:37 GMT

Lefteris,

Did you upgrade you app from a previous version or did you create this app using 1.1?

Re: Local Layer Widget

LefterisKoumis — Wed, 03 Jun 2015 14:37:18 GMT

No, everything is new. I just started the migration from flex and I am new on web appbuilder. So, I downloaded the 1.1 from the esri website and create the app. Everything went without a glitch until you made me aware of the missing folder. I am wondering how many other users are missing the folder and don't know about it.

Is there another site (like github) that I can download the 1.1 and I will re-create the app to check if the config folder exist?

Thank you.

Re: Local Layer Widget

RobertScheitlin__GISP — Wed, 03 Jun 2015 14:57:26 GMT

Lefteris,

So try this

start a NEW app in WAB 1.1
add an OTB widget (like the Bookmark) and configure the bookmark widget by adding a new bookmark
save the app using the save button in the lower left corner of WAB.
Check for the configs folder.
If that folder does not exist then see if your bookmark you added in step 2 is showing up in the [install Dir]\server\apps\[App Num]\widgets\Bookmark\config_Bookmark.json

Re: Local Layer Widget

LefterisKoumis — Wed, 03 Jun 2015 18:40:06 GMT

Yes, is there now. I have bookmark widget under the new folder configs and one under the widgets folder.

When I created the other app, I didn't add any widgets and I just installed the LocalLayer by following the instructions. In the LocalLayer instructions there is no mention of the configs folder. By not installing any of the ESRI's widgets, I guess the configs folder will not be created.

I think the instructions for the LocalLayer should reflect the fact that if this is the first widget to be installed, that the configs folder will not be created.

Please let me know if I am mis-reading the situation.

Thank you.

Re: Local Layer Widget

RebeccaStrauch__GISP — Wed, 03 Jun 2015 18:58:24 GMT

For the short term, I added a note re: the config folder to Web AppBuilder Developer Edition – Customization Resource List This is probably a good thing to point out.

Re: Local Layer Widget

LefterisKoumis — Wed, 03 Jun 2015 19:35:39 GMT

The problem is that there is no LocalLayer folder in the configs folder.

This is the steps from the beginning.

1. Install the LocalLayer in the appbuilder 1.1 and performed the json modifications per instructions.

2. Created new app. The LocalLayer widget is visible in the widgets area.

3. Added bookmark widget and saved map. The configs folder is now visible.

4. Customized the LocalLayers to include a feature service.

I don't know how to include the LocalLayer in the configs folder to apply Robert's code to implement definitionExpression. Ideas?

Thank you.

Re: Local Layer Widget

RobertScheitlin__GISP — Wed, 03 Jun 2015 19:53:30 GMT

Lefteris,

Something is still strange about your install... Here are the steps I follow:

Install the LocalLayer in the appbuilder 1.1 and performed the json modifications and other JS mods per instructions.
Created new app. The LocalLayer widget is visible in the widgets area.
Set LocalLayer widget to visible and click OK on settings dialog (accepting all defaults).
Save the new app
Now configs folder has LocalLayer sub folder with config_Local Layer Widget.json in it.