Javascript 从 ExtJS 中的商店中删除过滤器
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Removing a filter from a store in ExtJS
提问by joemoe
I explicitly add a filter to a Ext.data.Storeusing the store.filter(string, string)method.
我Ext.data.Store使用store.filter(string, string)方法显式地向 a 添加了一个过滤器。
However, I can not figure out how to remove filters from the store. So the filters always apply even after reloading using store.load(). The only workaround I see is to restart the entire web app.
但是，我不知道如何从商店中删除过滤器。因此，即使在使用store.load(). 我看到的唯一解决方法是重新启动整个 Web 应用程序。
How do I remove a filter from an Ext.data.Store?
如何从 中删除过滤器Ext.data.Store？
回答by Molecular Man
In addition to Mchi's answer, I want to say that it is possible to remove specific filter (clearFilter()removes them all).
To do that, instead of using store.filter('property_to_filter','value')method, use:
除了 Mchi 的回答，我想说可以删除特定的过滤器（clearFilter()将它们全部删除）。
为此，不要使用store.filter('property_to_filter','value')方法，而是使用：
store.filters.add('filtersId', new Ext.util.Filter({
property: 'property_to_filter',
value: 'value'
}));
store.load();
to remove filter use:
删除过滤器使用：
store.filters.removeAtKey('filtersId');
Update (for > 4.2.0)
更新（适用于 > 4.2.0）
In 4.2.0 methods for adding/removing specific filter were added:
在 4.2.0 中添加了添加/删除特定过滤器的方法：
store.addFilter({
id: 'filtersId',
property: 'property_to_filter',
value: 'value'
});
store.removeFilter('filtersId');
For more info check out docs: Ext.data.Store.addFilter, Ext.data.Store.removeFilter
有关更多信息，请查看文档：Ext.data.Store.addFilter、Ext.data.Store.removeFilter
回答by Mchl
You need to clearFilter()
你需要 clearFilter()
回答by Wam31
Edit:I just found out (browsing the API for something else) that it's even easier. There's a parameter (boolean) which, if true, doesn't reload the data when using remoteFilter...
编辑：我刚刚发现（浏览 API 以获取其他内容）它更容易。有一个参数（布尔值），如果为真，则在使用 remoteFilter 时不会重新加载数据...
So here goes :
所以这里是：
store.clearFilter(true);
store.filter(...);
Source: Store API > clearFilter
I can't believe I struggled for so long with that. In every forum I looked, I saw clearFilter which wasn't useful for remote filtering, and all I had to do was to add "true"...
我不敢相信我为此挣扎了这么久。在我查看的每个论坛中，我都看到了对远程过滤没有用的 clearFilter，我所要做的就是添加“true”...
Original Post:
原帖：
"You need to
clearFilter()"
“你需要
clearFilter()”
IMO, this is absolutely not satisfying.
When using a server backend to get the data (as many would), with remoteSortand remoteFilter+ paging to manage large result sets, it's even useless.
IMO，这绝对不能令人满意。当使用服务器后端来获取数据（很多都会），使用remoteSort和remoteFilter+ 分页来管理大型结果集时，它甚至是无用的。
Calling clearFilter()actually reloads the data before reapplying the filter. So 2 ajax requests are sent each time a filter is applied. This has bothered ma for a long time.
clearFilter()在重新应用过滤器之前，调用实际上是重新加载数据。因此，每次应用过滤器时都会发送 2 个 ajax 请求。这已经困扰了妈妈很久了。
All you have to do is actually :
实际上，您所要做的就是：
store.filters.clear(); // Which is what clearFilter() does just before reloading the data...
store.filter(...);
