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Ext4.1 RowEditing中combo值替[object Object]

2012-10-12 
Ext4.1 RowEditing中combo值为[object Object]JScript codeExt.onReady(function(){var rowEditing Ext.

Ext4.1 RowEditing中combo值为[object Object]

JScript code
Ext.onReady(function(){            var rowEditing = Ext.create('Ext.grid.plugin.RowEditing', {            clicksToMoveEditor: 1,            autoCancel: false        });                Ext.create('Ext.data.Store', {            storeId:'findEvertsStore',            fields: ['id', 'calendar','title', 'start','end', 'loc','notes', 'url','ad', 'rem', 'n'],            proxy: {                type: 'ajax',                url: 'findEverts.action',                reader: {                    type: 'json',                    root: 'everts'                }            },            autoLoad: true        });                var states = Ext.create('Ext.data.Store', {            fields:['id','title'],            proxy: {                type: 'ajax',                url: 'findCalendars.action',                reader: {                    type: 'json',                    root: 'calendars'                }            },            autoLoad: true        });                var grid = Ext.create('Ext.grid.Panel', {            title: 'Simpsons',            store: Ext.data.StoreManager.lookup('findEvertsStore'),            columns: [                { header: 'id',  dataIndex: 'id' },                {                     header: 'calendar',                     dataIndex: 'calendar',                    renderer: function(value){                        if(value != null){                            return value.title;                        }                    },                    flex: 1,                    editor: {                        xtype: 'combo',                        id: 'mt',                        store: states,                        displayField: 'title',                        valueField: 'id',                        allowBlank: false                    }                },                { header: 'title', dataIndex: 'title' }            ],            height: 200,            width: 800,            tbar: [{                text: 'Add Employee',                iconCls: 'employee-add',                handler : function() {                    rowEditing.cancelEdit();                        // Create a model instance                    var r = Ext.create('Employee', {                        name: 'New Guy',                        email: 'new@sencha-test.com',                        start: new Date(),                        salary: 50000,                        active: true                    });                        store.insert(0, r);                    rowEditing.startEdit(0, 0);                }            }, {                itemId: 'removeEmployee',                text: 'Remove Employee',                iconCls: 'employee-remove',                handler: function() {                    /**                    var sm = grid.getSelectionModel();                    rowEditing.cancelEdit();                    store.remove(sm.getSelection());                    if (store.getCount() > 0) {                        sm.select(0);                    }                    */                },                disabled: true            }],            plugins: [rowEditing],            listeners: {                'selectionchange': function(view, records) {                    grid.down('#removeEmployee').setDisabled(!records.length);                }            },            renderTo: Ext.getBody()        });              });


为什么在点击修改时,combo里面显示的[object Object]
combo原值是一个对象,grid显示正常,修改时显示不正常.
求各位帮忙解答一下.谢谢!

[解决办法]
首先确认的是你findCalendars.action的返回值是什么,再者是你在点击那行的combo是否有值,最后是要说出你点下拉的时候是什么情况,说出如上情况,才能帮你分析

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