dojo how to get all tree node of specific type? - dojo

Question

I wrote the following code to create a dojo tree.
store = new dojo.data.ItemFileWriteStore({url: link});
treeModel = new dijit.tree.TreeStoreModel({
store: store,
query: {
"type": "ROOT"
},
rootId: "newRoot",
childrenAttrs: ["children"]
});
tree= new dijit.Tree({model: treeModel},"treeOne");
Following is my JSON file structure :
{
identifier: "id",
label: "name",
items: [
{id: "ROOT",name: "Change Windows",type: "ROOT"},
]}
I want to get all the nodes (basically their 'id' part)of specific 'type',lets say type= "ROOT". Is there anyway to get all those node? I thought of doing this using tree._itemNodeMap, but don't know any way to iterate through this whole item map,because it need a id as a input to return any specific node.

Answer 1

If you're talking about obtaining the data items programatically, you can get them straight from the store using fetch.
Sample JSON for ItemFile*Store:
{
"identifier": "id",
"label": "name",
"items": [{
"id": "ROOT",
"name": "Root",
"type": "ROOT",
"children": [{
"id": "P1",
"name": "StackExchange",
"type": "website",
"children": [{
"id": "C1",
"name": "StackOverflow",
"type": "website"
},
{
"id": "C2",
"name": "ServerFault",
"type": "website"
}]
},
{
"id": "P2",
"name": "Sandwich",
"type": "food",
"children": [{
"id": "C3",
"name": "Ham",
"type": "food"
},
{
"id": "C4",
"name": "Cheese",
"type": "food"
}]
},
{
"id": "P3",
"name": "Potluck",
"type": "mixed",
"children": [{
"id": "C5",
"name": "Google",
"type": "website"
},
{
"id": "C6",
"name": "Banana",
"type": "food"
}]
}]
}]
}
Sample code:
dojo.require('dojo.data.ItemFileReadStore');
dojo.ready(function() {
var store = new dojo.data.ItemFileReadStore({
url: 'so-data.json'
});
store.fetch({
query: {
type: 'food'
},
queryOptions: {
deep: true
},
onItem: function(item) {
console.log(store.getLabel(item));
}
});
});
This will log Sandwich, Ham, Cheese, and Banana.