topic Re: passing map object between forms in ArcGIS JavaScript Maps SDK Questions

passing map object between forms

BrianFoley1 — Thu, 03 Nov 2016 17:15:09 GMT

Since I am having trouble creating a print template with it's associated legend, I decided to play around with creating my

own form that mimics how I want the template to look. I have my main form which displays the map and let's the user pick which layers are visible. They can then choose to print that map. I then want to send them to my print form which will format the map/legend slightly differently that the display form. I was wondering if it's possible to pass the map object between the two forms.

If this is not possible, then I'll get back to creating a print template. btw, I was successful in creating a print service using the tutorial that RS sent me.

Re: passing map object between forms

RobertScheitlin__GISP — Fri, 04 Nov 2016 01:28:37 GMT

Brain,

I don't see why not just have a global var on the second form and set the map to it from the first form.

Re: passing map object between forms

BrianFoley1 — Fri, 04 Nov 2016 10:27:47 GMT

How would I do that using JavaScript ?

Sent from my iPhone

Re: passing map object between forms

RobertScheitlin__GISP — Fri, 04 Nov 2016 12:53:22 GMT

Brain,

It would be hard fro me to provide any code as I really am not confident on your workflow and would have to write a lot of code from scratch to demo this.

Re: passing map object between forms

BrianFoley1 — Fri, 04 Nov 2016 14:34:26 GMT

No worries Robert

Sent from my iPhone

Re: passing map object between forms

BrianFoley1 — Fri, 04 Nov 2016 14:35:02 GMT

No worries Robert

Sent from my iPhone

Re: passing map object between forms

Drew — Fri, 04 Nov 2016 15:07:19 GMT

You could look at converting the map to JSON using the Print task
arcgis javascript api - export map state as JSON: Web_Map_as_JSON

Then store the JSON in the browsers storage to be later retrieved on the next page.

Drew

Re: passing map object between forms

BrianFoley1 — Fri, 04 Nov 2016 16:08:02 GMT

Thanks Andrew, I'll have to take a look at that when I get back to the office Monday

Re: passing map object between forms

Drew — Fri, 04 Nov 2016 16:59:34 GMT

Or depending on what you are doing exactly, you could just export the map image from the REST or from a MAP_ONLY Print and then pass the generate URL to the next form.

Re: passing map object between forms

BrianFoley1 — Tue, 08 Nov 2016 12:29:53 GMT

Andrew,

In the following example from the dojox.storage link you provided, where would the actual map object go ?

dojo.require("dojox.storage");
var storageProvider=null;
dojo.addOnLoad(function(){
    dojox.storage.manager.initialize();
    storageProvider=dojox.storage.manager.getProvider();
    storageProvider.initialize();
    var myObject={key1:true};
    storageProvider.put("myValue", myObject, function(status, keyName){
            alert("value put in "+keyName);
    });
});

Re: passing map object between forms

Drew — Tue, 08 Nov 2016 13:42:46 GMT

You will want to 'put' the map into storage. But I believe it has to be in JSON form.

storageProvider.put("myValue", myObject, function(status, keyName){
alert("value put in "+keyName);
});

Re: passing map object between forms

BrianFoley1 — Tue, 08 Nov 2016 13:50:14 GMT

I tried the code from the first link to sent 'Export Map as JSON' :

var printTask = new esri.tasks.PrintTask();

var Web_Map_as_JSON = JSON.toJson(printTask._getPrintDefinition(map));

but get the following error:

JavaScript runtime error: Object doesn't support property or method 'toJson'

Re: passing map object between forms

Drew — Tue, 08 Nov 2016 14:14:47 GMT

it looks like the function has changed a little.

Its more like

var webmap = printTask._getPrintDefinition(map, printparams)

Get the WebMap from Javascript API esri/map