topic Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic' in ArcGIS JavaScript Maps SDK Questions

Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'

agsdaniel — Mon, 25 Jan 2021 06:57:08 GMT

var GraphicsLayer = GraphicsLayer.createSubclass({

declaredClass:"egova.layers.GraphicsLayer",

...

addGraphic:function (id, layerTag, geometry, style, attr,

hStyle, popupTemplate) {

var graphic = new Graphic({geometry:geometry});

this.setSymbol(graphic,style);

graphic.style = style;

graphic.attributes = attr;

graphic.id = id;

graphic.hStyle = hStyle;

graphic.layerTag = layerTag;

graphic.extent = geometry.extent;

popupTemplate&&(graphic.popupTemplate = popupTemplate);

this.add(graphic);

return graphic;

}

});

when to add a graphic to graphicslayer，console prints the errors"Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'",what's the problem?

Re: Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'

agsdaniel — Mon, 25 Jan 2021 06:59:24 GMT

arcgis api for js version is 4.18.0

Re: Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'

VictorBerchet — Mon, 25 Jan 2021 16:05:35 GMT

It's hard to figure out with so little information. The best would be for you to add a reproduction in a codepen as https://codepen.io/vicb-the-lessful/pen/wvzLEBa?editors=100

Maybe

var GraphicsLayer = GraphicsLayer.createSubclass({ declaredClass:"egova.layers.GraphicsLayer",

looks fishy: try to change the variable name to something different than the base class, i.e. `ExtendedGraphicsLayer` ?

Re: Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'

agsdaniel — Tue, 26 Jan 2021 06:10:58 GMT

https://codepen.io/xstrivefor/pen/YzGommX

the error doesn't repeat in codepen,but the same code will print the error every time when to use method addGraphic in local enviroment

Re: Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'

agsdaniel — Thu, 28 Jan 2021 08:32:36 GMT

The problem hasn't been solved.Maybe the inheritance has a problem in strict mode.Is there anynone has a solution?

Re: Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'

ŁukaszWiszniewski — Tue, 29 Apr 2025 11:43:34 GMT

Is it solved?