Fire clear event when Store is empty? - Ext JS

iteye_3946

于 2009-04-19 00:38:20 发布

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本文讨论了数据存储清除事件的应用场景及其实现方式。提出当所有记录被移除时触发清除事件的观点，并探讨了该事件与删除事件之间的区别，旨在简化代码逻辑并提高效率。

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Just a suggestion and maybe this doesn't make sense in all cases. But I think it would be useful to fire the clear event on a data store if you remove all the records.

Ie I have 3 records in my store and call remove on all 3.

I think this may clean up code like the following:

ds.on('remove', function() {
	if (!ds.getCount())
		tbDeleteFindingBtn.disable();
});

Seems to me that the clear event should signify that all records have been removed and not be so tightly bound to the removeAll function.

02-22-2007, 06:39 PM

The clear event is specifically for when you clear the data store (to avoid numerous delete events). Firing the event delete + clear, would kind of defeat the purpose -> causing 2 grid, view (or other component) renders.