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我是ExtJs的新手.我有一個與數(shù)據(jù)存儲綁定的GridPanel.我有一個checkboxgroup,它包含GridPanel行的可能值.我想用checkboxgroup值過濾GridPanel.
這是代碼 –
Store1 = new Ext.data.JsonStore({
url: 'CustomerProfiles/GetDetails',
root: 'rows',
fields:['Name','Id']
});
DetailedResults =
{
xtype: 'grid',
autoHeight: true,
autoWidth: true,
autoScroll: true,
border: false,
trackMouseOver: false,
frame: true,
store: Store1,
columns: [
{ header: 'Name', dataIndex: 'Name', width: 90 },
{ header: 'Id', dataIndex: 'Id', width: 50 }
]
};
Leftpanel = new Ext.Panel({
id: 'Leftpanel',
frame: true,
width: 175,
items: [
{
xtype: 'label'
},
{
xtype: 'checkboxgroup',
columns: 1,
vertical: true,
items: [{
boxLabel: 'ALL',
name: 'chkName',
inputValue: 'all'
}, {
boxLabel: 'N1',
name: 'chkName',
inputValue: 'N1'
}, {
boxLabel: 'N2',
name: 'chkName',
inputValue: 'N2'
}, {
boxLabel: 'N3',
name: 'chkName',
inputValue: 'N3'
}], listeners: {
change: {
fn: function () {
Store1.clearFilter();
var selectedValue = this.getValue();
for (var i = 0; i < selectedValue.length; i ) {
Store1.filter('Name', selectedValue[i].inputValue);
}
}
}
}
}
]});
哪里出錯了？
PS：我使用的是3.4版本 解決方法: getValue()方法有點棘手,它返回的對象具有可變結(jié)構(gòu),具體取決于結(jié)果集,這會導(dǎo)致代碼中出現(xiàn)問題.但是,getChecked()方法更簡單,我將在解決方案中使用它.
然后,我們使用filterBy,因為它在這種情況下更有用.
在這里你有解決方案(評論內(nèi)聯(lián))：
change: {
fn: function () {
var checkedBoxes = this.getChecked(), //Array of checked checkboxes
selectedValues = []; //Array of selected values
for (var i = 0; i < checkedBoxes.length; i ) {
selectedValues.push(checkedBoxes[i].inputValue); //Add each inputValue to the array
}
var allSelected = Ext.Array.contains(selectedValues, 'all'); //Whether the 'ALL' option was selected
Store1.filterBy(function(record){
//If all was selected or if the name is included in the selectedValues, include the item in the filter
return allSelected || Ext.Array.contains(selectedValues, record.get('Name'));
});
}
}
問題解決了.經(jīng)過測試和工作:)
UPDATE
上面的代碼適用于ExtJs> = 4.對于Ext 3.4,這是代碼：
change: {
fn: function () {
var selectedValues = []; //Array of selected values
this.items.each(function(checkbox){
if(checkbox.checked)
selectedValues.push(checkbox.inputValue);
});
var allSelected = selectedValues.indexOf('all') >= 0; //Whether the 'ALL' option was selected
Store1.filterBy(function(record){
//If all was selected or if the name is included in the selectedValues, include the item in the filter
return allSelected || selectedValues.indexOf(record.get('Name')) >= 0;
});
}
}
可選(額外改進,僅適用于ExtJs 4.x)
但是,檢查您的應(yīng)用程序,我認為可以進行以下改進：
>根據(jù)商店數(shù)據(jù)動態(tài)創(chuàng)建過濾器復(fù)選框
>將ALL復(fù)選框與其余復(fù)選框同步(即選擇ALL時,選中所有其他復(fù)選框)
這是具有改進的代碼：
var Store1 = new Ext.data.JsonStore({
proxy: {
type: 'ajax',
url: 'CustomerProfiles/GetDetails',
reader: {
root: 'rows'
}
},
autoLoad: true,
fields: ['Name','Id'],
listeners: {
//Each time the store is loaded, we create the checkboxes dynamically, and add the checking logic in each one
load: function(store, records){
createCheckboxesFromStore(store);
}
}
});
var DetailedResults = {
xtype: 'grid',
autoHeight: true,
autoWidth: true,
autoScroll: true,
border: false,
trackMouseOver: false,
frame: true,
store: Store1,
columns: [
{ header: 'Name', dataIndex: 'Name', width: 90 },
{ header: 'Id', dataIndex: 'Id', width: 50 }
]
};
var Leftpanel = new Ext.Panel({
id: 'Leftpanel',
frame: true,
width: 175,
items: [
{
xtype: 'label'
},
{
xtype: 'checkboxgroup',
columns: 1,
vertical: true,
}
]});
function createCheckboxesFromStore(store){
var checkBoxGroup = Leftpanel.down('checkboxgroup');
checkBoxGroup.removeAll();
checkBoxGroup.add({
itemId: 'allCheckbox',
boxLabel: 'ALL',
name: 'chkName',
inputValue: 'all',
checked: true,
listeners: {
change: function (chbx, newValue) {
console.log("Changed ALL to ", newValue);
if(newValue){ //If ALL is selected, select every checkbox
var allCheckboxes = this.up('checkboxgroup').query("checkbox"); //Array of all checkboxes
for (var i = 0; i < allCheckboxes.length; i ) {
allCheckboxes[i].setValue(true);
}
}
}
}
});
//Create one checkbox per store item
store.each(function(record){
checkBoxGroup.add({
boxLabel: record.get('Id'),
name: 'chkName',
inputValue: record.get('Name'),
checked: true,
listeners: {
change: function (chbx, newValue) {
console.log("Changed ", chbx.inputValue, " to ", newValue);
var checkboxGroup = this.up('checkboxgroup'),
checkedBoxes = checkboxGroup.getChecked(), //Array of checked checkboxes
selectedValues = []; //Array of selected values
//If we uncheck one, also uncheck the ALL checkbox
if(!newValue) checkboxGroup.down("#allCheckbox").setValue(false);
for (var i = 0; i < checkedBoxes.length; i ) {
selectedValues.push(checkedBoxes[i].inputValue); //Add each inputValue to the array
}
Store1.filterBy(function(record){
//If all was selected or if the name is included in the selectedValues, include the item in the filter
return Ext.Array.contains(selectedValues, record.get('Name'));
});
}
}
});
});
}
這也是測試和工作:).如果你需要它,我可以通過jsfiddle鏈接運行代碼(告訴我).
干杯,來自玻利維亞拉巴斯 來源：https://www./content-1-337301.html
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