when a calendar item is created and then updated (via the store), the item is duplicated on the calendar about dojo-calendar

[damiengarbarino]

Hello,

I traced the code and found a NPE which is not the source of the issue.

The problem is that the store update function is called when item #2 is updated with a previous index of -1 which means that this is a new data item.

I suspect that this is a bug of the DataStore class because if you replace the DataStore by a MemoryStore the call is done with a previous index of 1 which is correct. And so you have a correct rendering.

[damiengarbarino]

I registered http://trac.dojotoolkit.org/ticket/14986 on this issue.

[cjolif]

As this is a dojo/store bug let's close the calendar issue and wait for the dojo/store bug to be fixed. Please re-open if any indication the pb actually comes from calendar.

[cjolif]

It seems to me a workaround might be to have

calendar_dataStore.queryEngine = SimpleQueryEngine;

Indeed Observable seems to not pass indexes if there is no query engine... Maybe this can help you?

[ezp-matt]

I wonder if this fails with the JsonRest store as well, since it doesn't define a queryEngine either..? In which case maybe it's more of an issue with Observable, and not just DataStore specifically. It seems like Observable should be just using the store's query() function (which is defined in every store), rather than looking for a queryEngine in the store, which may or may not exist. Memory's query() just uses the queryEngine anyhow.

I'll play around with it and see if I can figure out a fix. :)

[cjolif]

Yes the "issue" is more in Observable than DataStore. If you can figure out an Observable fix please provide it on the trac ticket. Thanks a lot!