问题描述
这段代码中，页面加载时，firebug显示processList.action被调用了两次，这是为什么？另外，选中一条数据，点击“流程定义”按钮后，仅弹出窗口，却不显示数据，但firebug显示数据已经加载了，究竟是哪儿有问题？请大家帮忙看看Ext.ns('Flow.processList');Flow.processList = function(){var store;var sm;var colModel;var grid;return{getStore:function(){store = new Ext.data.JsonStore({root: 'result',totalProperty: 'totalCount',remoteSort:false,storeId: 'processListId',autoDestroy: true,fields:['processId','processName','processVersion'],proxy: new Ext.data.HttpProxy({url: 'processList.action'}),autoLoad: true,sortInfo: {field:'processId',direction: 'ASC'}});//store.load();return store;},getSmModel: function(){sm = new Ext.grid.CheckboxSelectionModel({handleMouseDown: Ext.emptyFn//点击行时，不选中此行，要使的点击时，自动选中行，去掉此参数});return sm;},getColModel:function(){colModel = new Ext.grid.ColumnModel({columns: [ new Ext.grid.RowNumberer(), { header: "流程ID",dataIndex:'processId', sortable: true}, { header: "流程名称",dataIndex:'processName'}, { header: "流程版本",dataIndex:'processVersion'}, this.getSmModel(), ], defaults: { sortable: true }});return colModel;},getGrid:function(){grid = new Ext.grid.GridPanel({id: 'processListGrid',title:'流程列表',store: this.getStore(),cm: this.getColModel(),//colModel: this.colModel,sm: this.getSmModel(),viewConfig:{forceFit: true},tbar: [{ iconCls: '', text: '启动流程', handler:this.startProcess },'-',{ iconCls: '', text: '删除流程', //disabled: true, handler: this.removeProcess },'-', { iconCls: '', text: '流程定义', handler: this.getProcessDefinition },'-',{ iconCls: '', text: '流程图', handler: this.getProcessImage } ],bbar: new Ext.PagingToolbar({ pageSize: 10, store: this.getStore(), displayInfo: true, displayMsg: '显示流程 {0} - {1} of {2}', emptyMsg: "没有流程可显示", items:[ '-', { pressed: true, enableToggle:true, text: 'Show Preview', cls: 'x-btn-text-icon details', toggleHandler: function(btn, pressed){ var view = grid.getView(); view.showPreview = pressed; view.refresh(); } }] })});return grid;},startProcess: function(){if(!sm){sm = this.getSmModel();}var s = sm.getSelections()var process = s[0].data.processId;if(!process){Ext.Msg.alert('信息','未选择任何流程');return false;}else{Ext.Ajax.request({ url: 'startProcess.action?processId=' + process, success: function(response, opts) {var json = response.responseText||response.responseData;var result = Ext.decode(json); Ext.Msg.alert('信息',result.message); }, failure: function() { Ext.Msg.alert("错误","启动流程失败！"); }, scope: this });}},removeProcess: function(){if(!sm){sm = this.getSmModel();}var s = sm.getSelections()var process = s[0].data.processId;if(!process){Ext.Msg.alert('信息','未选择任何流程');return false;}else{Ext.Ajax.request({ url: 'deleteProcess.action?processId=' + process, success: function(response, opts) {var json = response.responseText||response.responseData;var result = Ext.decode(json); Ext.Msg.alert('信息',result.message); }, failure: function() { Ext.Msg.alert("错误","删除流程失败！"); }, scope: this });}},getProcessDefinition: function(){if(!sm){sm = this.getSmModel();}var s = sm.getSelections()var process = s[0].data.processId;if(!process){Ext.Msg.alert('信息','请选择要查看的流程');return false;}else{var processGrid = new Ext.grid.GridPanel({ store: new Ext.data.JsonStore({ root: 'resultSet',autoDestroy: true,fields:['processDefinition'],proxy: new Ext.data.HttpProxy({url: 'processDefinition.action?processId='+process}),autoLoad: true}), columns: [ {header: "流程定义", dataIndex: 'processDefinition'} ], viewConfig: { forceFit: true, }, sm: new Ext.grid.RowSelectionModel({singleSelect:true}),// width:600,// height:300, frame:true, title:'', iconCls:'icon-grid'});var win = new Ext.Window({id: 'processWin', width: 600, height: 300, title: '流程定义', plain: true, closable: true, //resizable: false, frame: true, layout: 'fit', autoScroll: true, border: false, modal: true, items:[processGrid]});win.show();}},getProcessImage: function(){ //TODO},render: function(tab){ if(!this.grid){ this.grid = this.getGrid(); tab.add(this.grid); }}}};Ext.onReady(function(){var win = new Ext.Window({});var f = new Flow.processList();f.render(win);win.show();}); 问题补充：babydeed 写道
解决方案
一般来说 tab上加了控件 比方你的tab.add(this.grid); 之后需要tab.doLayout()
解决方案二：
后台的数据格式需要这样的 不知道你的是不？{resultSet:[{processDefinition:"xxx"},{processDefinition:"xxx2"}]}
解决方案三：
后台的数据 发来看看
解决方案四：
Ext的弹出窗口里面的内容好像在火狐下面是不支持的，我以前遇到过，在IE下就正常
解决方案五：
我一般autoLoad: false, grid的store哪里需要加载时 才去load后台对于后一个问题 this.getProcessDefinition 你的这个具体操作没有给出代码