Unique names on drag/drop

@jothibaskaran wrote:

Hi,

I want to create unique names by appending a count of similar nodes to the component name. This is the binding function:

new go.Binding('text', '', (data) => {
                            let sameObjArray = [];
                            this.diagram.model.nodeDataArray.forEach(element => {
                                if (element['text'] == data.text && data.text == data.componentName) {
                                    sameObjArray.push(element);
                                }
                            });
                            let count = sameObjArray.length;
                            if (count == 0) {
                                return data.componentName;
                            } else {
                                while (_.find(sameObjArray, { 'componentName': data.componentName + Math.abs(count) }) != undefined) {
                                    count++;
                                }
                                return data.componentName + Math.abs(count);
                            }
                        }),

This is the scenario for which it is not working:

• I drag node “Comp1” on to diagram.
• Drag the next node which is then “Comp2”
• Next I delete the node “Comp1”
• When i drag the next node, i expect it to be “Comp3”.
  But, for some reason, it does show the name as “Comp3”, but the model data still has the name “Comp2”

I cant really understand what is going on. Could you tell me how to resolve this?

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