gridpanel分组汇总

[ExtJS5学习笔记]第三十节 sencha extjs 5表格gridpanel分组汇总

2015-05-31     86

本文地址：http://blog.csdn.net/sushengmiyan/article/details/42240531

本文作者：sushengmiyan

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本文以一个实际例子，使用了extjs的gridpanel中的分组统计显示功能，涉及知识点：

Ext.grid.Panel  model/store store中的data grid中的features以及其中ftype: 'groupingsummary'等

一、先看效果图：

可以看到图片显示的安装月份进行了分组显示 在每个分组下面会有合计和平均值显示。我这个例子在IE8和谷歌浏览器以及火狐浏览器下均正常显示。

二、贴上所有的代码(其实就只有一个jsp页面就足够了)

<%@ page contentType="text/html; charset=UTF-8" %>
<%
	String context = request.getContextPath();
%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<title>报表</title>
	<script type="text/javascript">
	  window.context = "<%=context%>";
    </script>
    <script type="text/javascript" src="<%=context %>/extjs5/include-ext.js"></script>
	<script type="text/javascript" src="<%=context %>/extjs5/packages/ext-locale/build/ext-locale-zh_CN.js"></script>
	<script type="text/javascript" src="<%=context %>/app/ux/Month.js"></script>
</head>
<body>
<script type="text/javascript" >

   Ext.onReady(function(){
	   var data = [{
		             factory:'第一家维修公司', date:'2014-05', cost:52492.0, costav:52492.0
			      },{
					 factory:'第二家维修公司', date:'2014-05', cost:760.0, costav:760.0
				  },{
					 factory:'第三家维修公司', date:'2014-05', cost:1807.0, costav:1807.0
				  },{
					 factory:'第一家维修公司', date:'2014-06', cost:4921.0, costav:4921.0
				  },{
					 factory:'第二家维修公司', date:'2014-06', cost:1020.0, costav:1020.0
				  },{
					 factory:'第三家维修公司', date:'2014-06', cost:1637.0, costav:1637.0
				  },{
					 factory:'第一家维修公司', date:'2014-07', cost:48150.0, costav:48150.0
				  },{
					 factory:'第二家维修公司', date:'2014-07', cost:7940.0, costav:7940.0}];

	   var store = Ext.create('Ext.data.Store', {
				   fields: [{name: 'date'}, {name: 'cost'},{name: 'costav'},{name: 'factory'}],
                   groupField: 'date',
				   data: data
	   });

	   var grid = Ext.create('Ext.grid.Panel', {
			frame: true,
			height: 800,
			columnLines: true, // 加上表格线
			features: [{
				id: 'group',
				ftype: 'groupingsummary',
				groupHeaderTpl: '{name}'+'月份车辆美容及维修费用',
				hideGroupedHeader: false,
				enableGroupingMenu: false
			}, {
				ftype: 'summary',
				summaryType: 'average',
				dock: 'bottom'
			}],
		   renderTo: Ext.getBody(),
           columns: [{
			             text: '维修时间', dataIndex: 'date',width:100,
					        summaryRenderer: function(value, summaryData, dataIndex) {
						      return '合计'}
			        },{
					     text: '维修费用(元)', dataIndex: 'cost', width:180,
				         field: { xtype: 'numberfield'},
				         summaryType: 'sum',
                         renderer: function(value, metaData, record, rowIdx, colIdx, store, view){
                              return value + ' 元'},
					     summaryRenderer: function(value, summaryData, dataIndex) {
                              return value + ' 元'}
			        },{
					     text: '维修厂家', dataIndex: 'factory',width:120,
				         summaryRenderer: function(value, summaryData, dataIndex) {
						      return '平均值'}
			        },{
						 text: '', dataIndex: 'costav', width:180,
				         field: {xtype: 'numberfield'},
				         summaryType: 'average',
                         renderer: function(value, metaData, record, rowIdx, colIdx, store, view){
                              return ''},//这列最后显示平均值 暂时这样转换显示
					     summaryRenderer: function(value, summaryData, dataIndex) {
                              return value + ' 元'}
			        }],
		store: store
	    });
		grid.show();
  });
</script>
</body>
</html>

这个随便起名一个jsp就可以啦。

里面使用了一个日期选择控件，只可以选择年月的。顺便也贴一下代码吧

/** Months picker
      重写 field.Date
**/
Ext.define('app.ux.Month', {
   extend:'Ext.form.field.Date',
   alias: 'widget.monthfield',
   requires: ['Ext.picker.Month'],
   alternateClassName: ['Ext.form.MonthField', 'Ext.form.Month'],
   selectMonth: null,
   createPicker: function() {
       var me = this,
           format = Ext.String.format;
       return Ext.create('Ext.picker.Month', {
           pickerField: me,
           ownerCt: me.ownerCt,
           renderTo: document.body,
           floating: true,
           hidden: true,
           focusOnShow: true,
           minDate: me.minValue,
           maxDate: me.maxValue,
           disabledDatesRE: me.disabledDatesRE,
           disabledDatesText: me.disabledDatesText,
           disabledDays: me.disabledDays,
           disabledDaysText: me.disabledDaysText,
           format: me.format,
           showToday: me.showToday,
           startDay: me.startDay,
           minText: format(me.minText, me.formatDate(me.minValue)),
           maxText: format(me.maxText, me.formatDate(me.maxValue)),
           listeners: {
       select:        { scope: me,   fn: me.onSelect     },
       monthdblclick: { scope: me,   fn: me.onOKClick     },
       yeardblclick:  { scope: me,   fn: me.onOKClick     },
       OkClick:       { scope: me,   fn: me.onOKClick     },
       CancelClick:   { scope: me,   fn: me.onCancelClick }
           },
           keyNavConfig: {
               esc: function() {
                   me.collapse();
               }
           }
       });
   },
   onCancelClick: function() {
       var me = this;
   me.selectMonth = null;
       me.collapse();
   },
   onOKClick: function() {
       var me = this;
   if( me.selectMonth ) {
              me.setValue(me.selectMonth);
           me.fireEvent('select', me, me.selectMonth);
   }
       me.collapse();
   },
   onSelect: function(m, d) {
       var me = this;
   me.selectMonth = new Date(( d[0]+1 ) +'/1/'+d[1]);
   }
});
/** Months picker **/  

知识点梳理：

①。显示的数据，这里整理好了一些数据，在实际中，我们可以通过查询数据库获取，分组查询便可。

	   var data = [{
		             factory:'第一家维修公司', date:'2014-05', cost:52492.0, costav:52492.0
			      },{
					 factory:'第二家维修公司', date:'2014-05', cost:760.0, costav:760.0
				  },{
					 factory:'第三家维修公司', date:'2014-05', cost:1807.0, costav:1807.0
				  },{
					 factory:'第一家维修公司', date:'2014-06', cost:4921.0, costav:4921.0
				  },{
					 factory:'第二家维修公司', date:'2014-06', cost:1020.0, costav:1020.0
				  },{
					 factory:'第三家维修公司', date:'2014-06', cost:1637.0, costav:1637.0
				  },{
					 factory:'第一家维修公司', date:'2014-07', cost:48150.0, costav:48150.0
				  },{
					 factory:'第二家维修公司', date:'2014-07', cost:7940.0, costav:7940.0}];

②store数据交互

	   var store = Ext.create('Ext.data.Store', {
				   fields: [{name: 'date'}, {name: 'cost'},{name: 'costav'},{name: 'factory'}],
                   groupField: 'date',
				   data: data
	   });

这里只需要指定一个groupField就可以了，只需要这一步。

③。grid主体

	   var grid = Ext.create('Ext.grid.Panel', {
			frame: true,
			height: 800,
			columnLines: true, // 加上表格线
			features: [{
				id: 'group',
				ftype: 'groupingsummary',
				groupHeaderTpl: '{name}'+'月份车辆美容及维修费用',
				hideGroupedHeader: false,
				enableGroupingMenu: false
			}, {
				ftype: 'summary',
				summaryType: 'average',
				dock: 'bottom'
			}],
		   renderTo: Ext.getBody(),
           columns: [{
			             text: '维修时间', dataIndex: 'date',width:100,
					        summaryRenderer: function(value, summaryData, dataIndex) {
						      return '合计'}
			        },{
					     text: '维修费用(元)', dataIndex: 'cost', width:180,
				         field: { xtype: 'numberfield'},
				         summaryType: 'sum',
                         renderer: function(value, metaData, record, rowIdx, colIdx, store, view){
                              return value + ' 元'},
					     summaryRenderer: function(value, summaryData, dataIndex) {
                              return value + ' 元'}
			        },{
					     text: '维修厂家', dataIndex: 'factory',width:120,
				         summaryRenderer: function(value, summaryData, dataIndex) {
						      return '平均值'}
			        },{
						 text: '', dataIndex: 'costav', width:180,
				         field: {xtype: 'numberfield'},
				         summaryType: 'average',
                         renderer: function(value, metaData, record, rowIdx, colIdx, store, view){
                              return ''},//这列最后显示平均值 暂时这样转换显示
					     summaryRenderer: function(value, summaryData, dataIndex) {
                              return value + ' 元'}
			        }],
		store: store
	    });

这里需要注意，1.需要给grid指定高度，如果不指定IE8下数据不显示,应该是个bug吧。

2.分组以及统计的关键

			features: [{
				id: 'group',
				ftype: 'groupingsummary',//分组统计，可以选择不分组的，各类型可以去API查找
				groupHeaderTpl: '{name}'+'月份车辆美容及维修费用',//标题而已
				hideGroupedHeader: false,
				enableGroupingMenu: false
			}, {
				ftype: 'summary',//下方的汇总的
				summaryType: 'average',//类型是求平均值，还有sum等，可以去API查找
				dock: 'bottom'
			}],