我在网格内有2个组合框。第二个组合框值将根据第一个组合框进行更改。
例如,组合有3个项目: America,Europe,Asia 。
如果在第一个组合框中选择了欧洲,则在第二个组合框中,欧洲不再出现。
我不知道我使用的是哪个版本的extj,
但这里是代码:
MY COMBO STORE
var cb_group = Ext.create('Ext.data.Store', {
model: 'cb_group',
autoLoad: false,
proxy: {
type: 'ajax',
url: 'srv/master/group/combo',
reader: {
type: 'json',
root: 'rows'
}
}
});
我的COMBO内部网格
var set_approval_dtl = Ext.create('Ext.Window', {
title: title_approval2, width: 850, height: 395, rowdblclick: true, forceFit: true,
closeAction: "hide", store: ms_set_approval_dtl_store,
defaults: {
sortable: true, resizable: false
},
items: [
{xtype: "form", items: [
{layout: 'column', columnWidth: .5, itemId: 'set_approve', defaults: {border: false},
items: [{xtype: "panel", itemId: "set_approve_panel", height: 330, defaultType: 'textfield', margin: '0 10px 0 10px',
defaults: {labelWidth: 120, width: 850, maxLength: 200},
items: [
{xtype: "grid", itemId: "grid_items", width: 782, height: 280, margin: '0 10px 10px 10px', autoScroll: true,
plugins: Ext.create('Ext.grid.plugin.CellEditing', {clicksToEdit: 1, pluginId: 'rowEditing'}),
store: ms_set_approval_dtl_store, stripeRows: true, defaultType: "gridcolumn",
viewConfig: {forceFit: true},
columns: [
{header: grid18j, width: 150, dataIndex: 'nm_act', align: 'center'},
{header: subtitle_approval3, width: 126, dataIndex: 'level1', align: 'center',
editor: {xtype: "combobox", name: "cdgr", itemId: "cdgr1", typeAhead: true, editable: false, triggerAction: "all", forceSelection: true,
emptyText: grid8k, store: cb_group, valueField: "id", displayField: "nm",
listeners: {
expand: function(field, options, val) {
if (Ext.typeOf(field.getPicker().loadMask) !== "boolean") {
field.getPicker().loadMask.hide();
}
},
select: function(value) {
var obj = this.lastSelection[0].data;
return obj.nm;
this.lastSelection[0].hide;
cb_group.removeAt(0);
}
}},
renderer: function(val) {
var index = cb_group.findExact('id', val);
if (index !== -1) {
var rs = cb_group.getAt(index).data;
return rs.nm;
}
}
},
{header: subtitle_approval4, width: 126, dataIndex: 'level2', align: 'center', itemId: "level2",
editor: {xtype: "combobox", name: "cdgr", itemId: "cdgr2", typeAhead: true, editable: false, triggerAction: "all", forceSelection: true,
emptyText: grid8k, store: cb_group, valueField: "id", displayField: "nm",
listeners: {
expand: function(field, options) {
if (Ext.typeOf(field.getPicker().loadMask) !== "boolean") {
field.getPicker().loadMask.hide();
}
}
}
},
select: function(value) {
var obj = this.lastSelection[0].data;
return obj.nm;
},
renderer: function(val) {
var index = cb_group.findExact('id', val);
if (index !== -1) {
var rs = cb_group.getAt(index).data;
return rs.nm;
}
}
}]
}]}
]}]}
]});
我在第一个组合中尝试了 this.lastSelection [0] .hide; 和 cb_group.removeAt(0); 。但它根本不起作用。我不知道为什么我的选择听众不工作。
请分享一些解决方案。感谢
答案 0 :(得分:0)
您可以使用XTemplates通过一个商店和两个组合框管理此类行为。
首先,您必须为组合框中的项目列表创建XTemplate:
// displayfield = displayfield configured in your combobox
var template = Ext.create('Ext.XTemplate',
'<tpl for=".">',
' <tpl if="[Ext.getCmp(\'combobox1\').getValue()] != id && [Ext.getCmp(\'combobox2\').getValue()] != id">',
' <div class="x-boundlist-item">{label}</div>',
' <tpl else>',
' <tpl if="id == null || id == \'\'">',
' <div class="x-boundlist-item">{label}</div>',
' <tpl else>',
' <div class="x-boundlist-item" style="font-size:0px; height:0px;"></div>',
' </tpl>',
' </tpl>',
'</tpl>'
);
XTemplate包含一些语句,用于检查是否已在其中一个组合框中选择了特定值。如果没有,则该条目将出现在下拉列表中,否则将被隐藏。要使其工作,您必须在组合框中设置模板并为它们添加一些监听器:
// Combobox 1
{
xtype: 'combo',
id: 'combobox1',
store: 'your_store',
tpl: template,
displayField: 'label',
valueField: 'id',
listeners: {
beforeSelect: function (combo, record, index, eOpts)
{
// Check if the selected value is already selected in combobox2
var cbx2value = !!Ext.getCmp('combobox2').getValue() ? Ext.getCmp('combobox2').getValue() : '';
if (cbx2value != record.get('id') && cbx2value != record.get('id')) {
return true; // selected entry will be selected successfully
} else {
return false; // selected entry will not be selected
}
},
change: function ()
{
// Get the picker (list of items) of the other combobox and refresh it's template state
var cbx2picker = Ext.getCmp('combobox2').getPicker();
cbx2picker.refresh();
}
}
// Combobox 2
{
xtype: 'combo',
id: 'combobox2',
store: 'your_store',
tpl: template,
displayField: 'label',
valueField: 'id',
listeners: {
beforeSelect: function (combo, record, index, eOpts)
{
// Check if the selected value is already selected in combobox2
var cbx1value = !!Ext.getCmp('combobox1').getValue() ? Ext.getCmp('combobox1').getValue() : '';
if (cbx1value != record.get('id') && cbx1value != record.get('id')) {
return true; // selected entry will be selected successfully
} else {
return false; // selected entry will not be selected
}
},
change: function ()
{
// Get the picker (list of items) of the other combobox and refresh it's template state
var cbx1picker = Ext.getCmp('combobox1').getPicker();
cbx1picker.refresh();
}
}
它不是最终的解决方案,但对于我的一个项目来说,它就像一个魅力。我尽可能简化了示例,使解决方案更加清晰。
答案 1 :(得分:-1)
您需要两个商店,每个商店一个,每个商店都填充相同的数据。
然后你会这样做:
combo1.on('select',function(combo, newVal) {
combo2.getStore().filterBy(function(rec){
return rec.get("value")!=newVal;
})
});