jQuery 为剑道数据源动态更改过滤器值？
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Change filter value dynamically for a kendo datasource?
提问by Naner
I would like to be able to update the filter value dynamically through a function:
我希望能够通过函数动态更新过滤器值：
filter: [{
"field": "id_person",
"operator": "eq",
"value": GetIdPerson()
}]
And the function:
和功能：
function GetIdPerson() {
try{
if (viewModel.get("SelectedMember").id_person > 0) {
return viewModel.get("SelectedMember").id_person;
}
} catch(ex) { }
return 0;
}
But the function is not being called when I call datasource.read().
但是当我调用 datasource.read() 时没有调用该函数。
Is there a better way to accomplish this?
有没有更好的方法来实现这一点？
Or if this is the best way, what am I doing wrong?
或者，如果这是最好的方法，我做错了什么？
Thanks!
谢谢！
回答by OnaBai
There is a built-in function for setting (updating) filter in a DataSource, check this. So actually I don't know why you need that function. It would be easier doing:
有一个用于在 DataSource 中设置（更新）过滤器的内置函数，检查这个。所以实际上我不知道你为什么需要这个功能。这样做会更容易：
try{
if (viewModel.get("SelectedMember").id_person > 0) {
datasource.filter({
"field": "id_person",
"operator": "eq",
"value": viewModel.get("SelectedMember").id_person
});
}
} catch(ex) { }
I mean, define/apply a new filter for the original datasourcewhich condition is the one that you want.
我的意思是，为原始datasource条件定义/应用一个新过滤器，哪个条件是您想要的条件。
BUTof course nothing prevents you from using a function for getting the actual value of a filter and you can do:
但是当然没有什么可以阻止您使用函数来获取过滤器的实际值，您可以这样做：
function GetIdPerson() {
try{
if (viewModel.get("SelectedMember").id_person > 0) {
return viewModel.get("SelectedMember").id_person;
}
} catch(ex) { }
return 0;
}
var datasource = new kendo.data.DataSource({
...
schema : {
model : {
fields: {
...
}
}
},
filter: {
"field": "id_person",
"operator": "eq",
"value": GetIdPerson()
}
});
and/or
和/或
datasource.filter({
"field": "id_person",
"operator": "eq",
"value": GetIdPerson()
});
An example here: http://jsfiddle.net/OnaBai/9gnsj/
这里的一个例子：http: //jsfiddle.net/OnaBai/9gnsj/
回答by Ranga Reddy
If you want to filter based on more than filed value you can use 'and' operator other wise use 'or' operator.
如果您想根据多于提交的值进行过滤，您可以使用“and”运算符，否则请使用“or”运算符。
Now i am creating one dynamic filter.
现在我正在创建一个动态过滤器。
var filter = { logic: "and", filters: [] };
for(var index=0; index < totalPages; index++){
filter.filters.push({field: "name", operator: "eq", value: dynamic value here });
}
dataSource.filter(filter);
回答by Ranga Reddy
This worked for me. Not documented anywhere, but saw the _filter and _sort objects in the gridOptions.dataSource object, and hey presto it worked.
这对我有用。没有记录在任何地方，但在 gridOptions.dataSource 对象中看到了 _filter 和 _sort 对象，嘿，它很快就起作用了。
$http.get(templateUrl).success(function(result) {
gridOptions.columns = result.columns;
if (result.filter) {
gridOptions.dataSource._filter = result.filter;
gridOptions.dataSource._sort = result.sort;
};
