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' }],OK
就这样设置,就可以简单的实现一个分组报表统计了,有求平均值求和等方法。简单易用