Dojo-Dijit.Tree-更新树

Question

I created a simple tree based on a TreeStoreModel which is backed by ItemFileWriteStore. I tried updating my tree by deleting and adding items to the store as below, but could not.

dojo.require("dojo.data.ItemFileWriteStore");
dojo.require("dijit.Tree");
dojo.addOnLoad(function () {
    var tmpData = [{
            "name" : "Dell",
            "type" : "business",
            "businessid" : "1",
            "projectid" : "1",
            "submenu" : [{
                    "name" : "OTP",
                    "type" : "product",
                    "productid" : "100"
                }
            ]
        }
    ];

    var tmpData1 = [{
            "name" : "Lenovo",
            "type" : "business",
            "businessid" : "1",
            "projectid" : "1",
            "submenu" : [{
                    "name" : "OTP",
                    "type" : "product",
                    "productid" : "100"
                }
            ]
        }
    ];
    var store = new dojo.data.ItemFileWriteStore({
            data : {
                label : 'name',
                items : tmpData
            }
        });

    var treeModel = new dijit.tree.TreeStoreModel({
            store : store,
            query : {
                type : 'business'
            },
            childrenAttrs : ["submenu"]

        });

    var divTestTree = dojo.create("div", null, dojo.body(), "first");
    var mytree = new dijit.Tree({
            model : treeModel
        },
            divTestTree);
    /* Tree is created at this point */

    /* Delete the item from the store,  for some reason tempData is being reset*/
    store.deleteItem(tmpData[0]); 
    /* save */
    store.save();
    /* Tree shows up no more at this point */

    /* Try adding new item to the store */
    store.newItem(tmpData1[0]);
    /* save */
    store.save();
    /*nothing happens! */   
});

I followed the lead from here , I must be missing something very trivial here. Please help.

Answer 1

对于任何来这里寻求解决方案的人，“我怀疑存在错误”是我在论坛中获得的唯一答案，所以可能这是一个错误-goo.gl/M7xg7

Answer 2

Taken from that page

How do I refresh a Tree from the store?

This isn't supported. The store needs to notify the tree of any changes to the data. Currently this is really only supported (out of the box) by dojo.data.ItemFileWriteStore, as setting up a client-server dojo.data source where the server notifies the client whenever the data has changed is quite complicated, and beyond the scope of dojo, which is a client-only solution.

The only way to update the tree is to re-draw it again :(