My nodes link to other nodes hard!

GoJS
1

I used the PolylineLinkingTool sample and do some changes;

   myDiagram.nodeTemplate =
            $(go.Node, "Spot",
                { locationSpot: go.Spot.Center },
                new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
                $(go.Panel, "Auto",//横向排列
                    $(go.Picture,"/uploads/20151222abb43228f5b11b1bde16a7e69645d013.jpg",
                      {                               
                        margin: 5,
                        portId: "",
                        cursor: "pointer",
                        fromLinkable: true,
                        fromLinkableSelfNode: true, fromLinkableDuplicates: true,  // optional
                        toLinkable: true,
                        toLinkableSelfNode: true, toLinkableDuplicates: true  // optional
                    },
                    new go.Binding("fill"))),

                $(go.Shape, {
                    width: 20, height: 20,
                    fill: "transparent", stroke: null }),
                $(go.TextBlock,
                    new go.Binding("text")));

As you see, I just change the go.Shape to go.Picture.
Then when i make the link connect to another node, another node can not get the link.

This is the right connection.

ZKE_K~P}O2UZREMD]WP7%QQ.png821×234 40.2 KB

This is my change show.

That’s my question, can you give me some advice?

2

I have try many times, If i do carefully ecough i can make it connected,
Of course,It is not what i want. I think i need you help ,please.

3

Are you using go-debug.js and checking the console log? There are some errors in your template that should be showing up in the console output.

Nevertheless I still do not understand how the template that you quote could produce the results that you show in the second screenshot.

4

There are some errors in my Template and i solved it.
But my question i can not make the node connected still exists.

5

Now,i try to use port to complete the connection.It works. Whatevet Thans your advice.