Getting node data w/in node template

GoJS
1

I’m trying to get node data or rather model data from w/in the node template.

in the template, i’m calling a function that returns a picture.
depending on the value passed to this function will determine what picture is returned.

passing static data for testing proved this logic and works.

but i need the actual data from the node to be passed to this function. how should i go about doing this?

i have tried new go.Binding(“text”, “YQN”) but this passes nothing for the level

i even tried passing:
$(go.TextBlock, //YQN
{ row:1, column: 0, font: “9pt sans-serif”, stroke: “black” },
new go.Binding(“text”, “YQN”)).text
but this resulted in an empty string being passed

my code looks like this:
…template
getLevelPicture(“Y”, 1, 0),
…template

function getLevelPicture(level, row, column){
var returnValue;
//create level pictures
var level1 = $(go.Picture, { source: “images/1level.gif”} );
var level2 = $(go.Picture, { source: “images/2level.gif”} );
var level3 = $(go.Picture, { source: “images/3level.gif”} );
var level4 = $(go.Picture, { source: “images/4level.gif”} );
var level5 = $(go.Picture, { source: “images/5level.gif”} );
var level6 = $(go.Picture, { source: “images/6level.gif”} );
var levelY = $(go.Picture, { source: “images/Ylevel.gif”} );
var levelQ = $(go.Picture, { source: “images/Qlevel.gif”} );
var levelN = $(go.Picture, { source: “images/Nlevel.gif”} );
var levelBlank = $(go.Picture, { source: “images/nolevel.gif”} );

if(level == "1"){
    returnValue = level1;
} else if(level == "2"){
    returnValue = level2;
} else if(level == "3"){
    returnValue = level3;
} else if(level == "4"){
    returnValue = level4;
} else if(level == "5"){
    returnValue = level5;
} else if(level == "6"){
    returnValue = level6;
} else if(level == "Y"){
    returnValue = levelY;
} else if(level == "Q"){
    returnValue = levelQ;
} else if(level == "N"){
    returnValue = levelN;
} else if(level == ""){
    returnValue = levelBlank;
} else if(level == " "){
    returnValue = levelBlank;
} else if(level == "-"){
    returnValue = levelBlank;
}

returnValue.row = row;
returnValue.column = column;

return returnValue;

}

thanks for the help

2

Instead of trying to substitute a whole go.Picture, why not just parameterize the Picture.source property? That’s what the samples do.

You can even use a converter function to convert the data property value to a URI, as the Beat Paths sample does. See how the convertKeyImage function is used and defined in that sample.

3

Walter,
thank you for pointing me to that sample and function.
this worked perfectly and does exactly what i need it to.

thanks for the help