ExtJS4-渲染子网格

Question

当我使用rowexpander插件展开网格行时，我正试图在网格行内创建一个网格。如何在expandbody事件上呈现子网格？

到目前为止，这是我的代码，当我定义网格面板时，它被用作事件处理程序属性：

 getOtherProducts: function (rowNode, record, expandRow, eOpts) {
        $.ajax({
            type: 'GET',
            url: "Report.aspx/GetOtherProducts",
            data: { ID: record.data['ID'] },
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function () {
                var subStore = Ext.create('pr.store.Store-Products');
                subStore.proxy.extraParams.productID = record.data['ID'];
                var subGrid = Ext.create('Ext.grid.Panel', {
                    store: subStore
                });
                subGrid.getEl().swallowEvent(['mouseover', 'mousedown', 'click', 'dblclick']);
            },
            error: function () {
                showNotificationBar("Error retrieving product data. Re-expand the row to try again.");
            }
        });
    },

Answer 1

stratboogie在http://www.sencha.com/forum/showthread.php?151442-Nested-EXTJS-4-Grids完成了任务。

我做了一个轻微的修改，将元素ID存储到阵列中

subGrids.push(subGrid.id);

然后重写分页事件处理程序以循环遍历数组，并销毁数组中具有ID的所有元素以控制内存。

function destroySubGrids(){
    Ext.each(subGrids, function(id){
            var subGrid = Ext.getCmp(id);
            if(subGrid){
                subGrid.destroy();
                delete subGrid;
            }
        });
    subGrids = [];  
    console.log(Ext.ComponentMgr.all.length); //debug
}