Dojo - error trying remove and add item to store (assertion failed in ItemFileWriteStore)

Question

I have store (and grid which displays its content), users could remove and add item but unfortunately one item after deleting could not be again added. I figure out problem is same id which was previously in store.

I use Dojo 1.6.

In firebug console I got:

Error: assertion failed in ItemFileWriteStore

Here is demo on jsFiddle: http://jsfiddle.net/MBBnE/

and here code:

dojo.require("dojo.data.ItemFileWriteStore");

dojo.addOnLoad(function() {

    var d = {
        items: [
            {
            id: 23,
            x: 2},
            ],
        identifier: "id",
    };

    var _store = new dojo.data.ItemFileWriteStore({
        data: d,
    });

    var it = null;

    _store.fetch({
        query: {
            id: "23*"
        },
        onItem: function(i) {
            it = i;
        }
    })

    _store.deleteItem(it);

    console.info(it);

    _store.newItem({id: 23, x: 3});
});

Dojo stores don't free the identifier after deletion. At least in 1.6. :( — undefined, Nov 19 '12 at 13:43
Sadly, I don't. I ended up using a separate auto generated field for the identifier, when I found this "feature". — undefined, Nov 19 '12 at 13:57

score 6 · Accepted Answer · answered Dec 06 '12 at 06:28

6

Hopefully I didn't misunderstand your question, but when you remove an item from a store if you want to re-add another item with the same id, you should save the store then re-add the item. Saving the store will clear all dirty items and allow the id to be reuse.

answered Dec 06 '12 at 06:28

xangxiong

596
4
9

2

thanks, I've been using SO for a while on and off and haven't had the time to contribute. Finally found time to give back. – xangxiong Dec 06 '12 at 16:14

score 1 · Answer 2 · answered Nov 19 '12 at 17:05

1

When you insert same value in Itemfilewritestore it will give you error 'assertion failed in ItemFileWriteStore' To overcome this problem insert new or unique value in ItemFileWriteStore

_store.newItem({id: 24, x: 3});

I hope this will help you.

answered Nov 19 '12 at 17:05

Mithlesh Kumar

748
7
16

Well, I know why I got `asserion failed` error :) Unfortunately, I MUST use the same id as in previous item... – IProblemFactory Nov 19 '12 at 20:09

score 0 · Answer 3 · answered Dec 05 '12 at 08:30

Finally I did a little workaround - create new store and copy all items to it:

    oldStore.fetch({
        onItem: function(it){

            var newItem = {
                id: it.id[0],
                valueX: it.valueX[0],
                (...)
            };

            newStore.newItem(newItem);
        }
    });

Dojo - error trying remove and add item to store (assertion failed in ItemFileWriteStore)

3 Answers3