I have nodes with a custom data property “nodeType”. I have added the custom properties “fromType” and “toType” to my linktemplate. When I create a new link between two nodes I want to populate “fromType” with the value of “nodeType” in the fromnode, and “toType” with the value of “nodeType” in the tonode. How could I accomplish this?
If you only want to do that when the user draws a new link, implement a “LinkDrawn” DiagramEvent listener that modifies the new Link, e.subject, Link.data properties the way that you want, based on the Link.fromNode and Link.toNode data properties.
I think you can find examples of “LinkDrawn” listeners.
No. link.toNode.nodeType gets the custom property just fine (you can test it yourself with a console.log as well). But I have to use link.data to SET it. Maybe toNode/fromNode implicitly gets the data? I don’t know, but it works.
Whereas you stated that in your app there is a nodedata.nodeType property. So link.fromNode.data.nodeType should work, and link.fromNode.nodeType should not unless you have done something else to set that.
That might work. But you’ll get warnings about there not being any “nodeType” property on the Node.
While developing your app you are using go-debug.js and checking the console output, aren’t you?
I am using go-debug.js and checking console, yes. I already got the warning you mention* before I implemented this, and I’m not directly accessing it through property anywhere else. I just gave up trying to fix it because it behaves as intended. I thought the binding was necessary to bind information to a node/link? I did the same with my linkTemplate to store fromType/toType.
*something like this:
Binding error: undefined target property: nodeType on Node#743(Kamera)