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JSON.stringify esri.map object

ChrisJudd1

Hi, I would like to be able to xhrpost the map object. However, when I try to JSON.stringify the map, I get the following error: TypeError: Converting circular structure to JSON.

How can this be done? I know its possible since the print and gp tasks are able to turn the map into a string before posting it.

Thanks,
Chris

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Accepted answers

ReneRubalcava

The print task parses the map object manually to create a JSON object that matches the ExportWebMap specification to use Print GP Services.
http://resources.arcgis.com/en/help/main/10.1/index.html#//0154000004w8000000

So you can do the same, but you'd need to step through the map object, JSON.stringify() won't do it.

All comments

ReneRubalcava

ChrisJudd1

Thank you sir, that answered my question!

ReneRubalcava

Just a quick update on this. You can get the mapOptions and operationalLayers (probably most tedious to process) by using the PrintTask.

PrintTask.prototype._getPrintDefinition(map);

After that you'd need to mixin the layoutOptions with your legendOptions if needed and the extra parameters.
Send an object as

{
  Web_Map_as_JSON: <web map as json>,
  Format: <jpg, pdf, whatever>,
  Layout_Template: <template name>
}

You're good to go.

Arne_Gelfert

Thanks, Renee. - For anyone needing more info, there is a somewhat more recent related thread here:

Get the WebMap from Javascript API esri/map

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