1. #1
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      1  

    Default How to delete a node off the tree?

    How to delete a node off the tree?


    This shouldn't be that hard, should it? I need to search through the store to find nodes that meet a certain criteria, and simply delete them (be they leaves or branches)?

    Here's what I've got:

    Code:
    var store = tree.getStore();store.doOnLoad(function(store) {
        var root = Ext.valueFrom(null, tree.getRootNode());
        root.cascadeBy(function(node) { 
            if (node.get("archived") == true) {
                store.getById(node.internalId).remove();
            }
        });
    });
    It's throwing a "childNodes[i] is undefined" error: childNodes[i].cascadeBy(fn, scope, args); [ext-all-dev.js (line 56625)]

    Since it's throwing that inside a recursion loop, it would seem to indicate that it doesn't know to not follow that branch when its ancestor has been deleted. But that's only a guess at this point.

    Been beating my head against the wall for far too long on this one. Any help would be greatly appreciated.

  2. #2
    Sencha - Senior Forum Manager mitchellsimoens's Avatar
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      0  

    Default


    You need to use the removeChild method on the parent node
    Mitchell Simoens @SenchaMitch
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  3. #3
    Sencha Premium Member sonata82's Avatar
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      0  

    Default


    In the callback of cascadeBy, you shouldn't alter the structure of the tree.

    To delete a number of childnodes you could use the following structure:

    Code:
    var i, node,
        nodesToDelete = [];
    
    
    this.getEntitiesStore().getRootNode().cascadeBy(function (node) {
        if (insert your requirement here) {
            nodesToDelete.push(node);
        }
    }, this);
    
    
    for (i = 0; (node = nodesToDelete[i]); i++) {
        node.parentNode.removeChild(node);
    }

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