2017-04-22 17:24:17 +08:00
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package utils
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import (
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// "fmt"
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html "html/template"
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con "strconv"
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"strings"
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"github.com/astaxie/beego/orm"
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"fmt"
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2017-04-24 18:25:17 +08:00
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"math"
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2017-04-22 17:24:17 +08:00
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)
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type PageOptions struct {
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TableName string //表名 -----------------[必填]
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Conditions string //条件
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CurrentPage int //当前页 ,默认1 每次分页,必须在前台设置新的页数,不设置始终默认1.在控制器中使用方式:cp, _ := this.GetInt("pno") po.CurrentPage = int(cp)
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PageSize int //页面大小,默认20
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LinkItemCount int //生成A标签的个数 默认10个
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Href string //A标签的链接地址 ---------[不需要设置]
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ParamName string //参数名称 默认是pno
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FirstPageText string //首页文字 默认"首页"
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LastPageText string //尾页文字 默认"尾页"
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PrePageText string //上一页文字 默认"上一页"
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NextPageText string //下一页文字 默认"下一页"
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EnableFirstLastLink bool //是否启用首尾连接 默认false 建议开启
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EnablePreNexLink bool //是否启用上一页,下一页连接 默认false 建议开启
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}
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/**
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* 分页函数，适用任何表
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* 返回 总记录条数,总页数,以及当前请求的数据RawSeter,调用中需要"rs.QueryRows(&tblog)"就行了 --tblog是一个Tb_log对象
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* 参数：表名，当前页数，页面大小，条件（查询条件,格式为 " and name='zhifeiya' and age=12 "）
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*/
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func GetPagesInfo(tableName string, currentpage int, pagesize int, conditions string) (int, int, orm.RawSeter) {
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if currentpage <= 1 {
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currentpage = 1
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}
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if pagesize == 0 {
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pagesize = 20
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}
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var rs orm.RawSeter
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o := orm.NewOrm()
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var totalItem, totalpages int = 0, 0 //总条数,总页数
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o.Raw("SELECT count(*) FROM " + tableName + " where 1 > 0 " + conditions).QueryRow(&totalItem) //获取总条数
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if totalItem <= pagesize {
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totalpages = 1
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} else if totalItem > pagesize {
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temp := totalItem / pagesize
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if (totalItem % pagesize) != 0 {
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temp = temp + 1
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}
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totalpages = temp
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}
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rs = o.Raw("select * from " + tableName + " where 1 > 0 " + conditions + " LIMIT " + con.Itoa((currentpage-1)*pagesize) + "," + con.Itoa(pagesize))
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return totalItem, totalpages, rs
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}
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/**
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* 返回总记录条数,总页数,当前页面数据,分页html
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* 根据分页选项,生成分页连接 下面是一个实例:
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func (this *MainController) Test() {
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var po util.PageOptions
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po.EnablePreNexLink = true
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po.EnableFirstLastLink = true
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po.LinkItemCount = 7
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po.TableName = "help_topic"
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cp, _ := this.GetInt("pno")
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po.CurrentPage = int(cp)
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_,_,_ pager := util.GetPagerLinks(&po, this.Ctx)
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this.Data["Email"] = html.HTML(pager)
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this.TplName = "test.html"
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}
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*/
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func GetPagerLinks(po *PageOptions,requestURI string) (int, int, orm.RawSeter, html.HTML) {
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str := ""
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totalItem, totalpages, rs := GetPagesInfo(po.TableName, po.CurrentPage, po.PageSize, po.Conditions)
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po = setDefault(po, totalpages)
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DealUri(po, requestURI)
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if totalpages <= po.LinkItemCount {
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str = fun1(po, totalpages) //显示完全 12345678910
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} else if totalpages > po.LinkItemCount {
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if po.CurrentPage < po.LinkItemCount {
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str = fun2(po, totalpages) //123456789...200
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} else {
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if po.CurrentPage + po.LinkItemCount < totalpages {
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str = fun3(po, totalpages)
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} else {
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str = fun4(po, totalpages)
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}
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}
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}
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return totalItem, totalpages, rs, html.HTML(str)
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}
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func GetPagerHtml(requestURI string,pageIndex, pageSize,totalCount int) (html.HTML){
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po := &PageOptions{
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CurrentPage: pageIndex,
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PageSize: pageSize,
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EnableFirstLastLink : true,
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ParamName : "page",
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}
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totalPages := int(math.Ceil(float64(totalCount) / float64(pageSize)))
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setDefault(po,totalPages)
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DealUri(po,requestURI)
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str := ""
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if totalPages <= po.LinkItemCount {
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str = fun1(po, totalPages) //显示完全 12345678910
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} else if totalPages > po.LinkItemCount {
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if po.CurrentPage < po.LinkItemCount {
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str = fun2(po, totalPages) //123456789...200
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2017-04-22 17:24:17 +08:00
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} else {
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2017-04-24 18:25:17 +08:00
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if po.CurrentPage + po.LinkItemCount < totalPages {
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str = fun3(po, totalPages)
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} else {
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str = fun4(po, totalPages)
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2017-04-22 17:24:17 +08:00
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}
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}
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}
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str = strings.Replace(str,"?&","?",-1)
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//str = strings.Replace(str,"&&","&",-1)
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return html.HTML(str)
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}
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/**
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* 处理url,目的是保存参数
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*/
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func DealUri(po *PageOptions, requestURI string) {
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var rs string
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if strings.Contains(requestURI, "?") {
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arr := strings.Split(requestURI, "?")
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rs = ""
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arr2 := strings.Split(arr[1], "&")
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for _, v := range arr2 {
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if !strings.Contains(v, po.ParamName) {
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if strings.HasSuffix(rs,"&") {
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rs += v
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}else{
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rs += v + "&"
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}
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//rs += "&" + v
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}
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}
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if strings.HasPrefix(rs,"&") {
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rs = string(rs[1:])
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}
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if strings.HasSuffix(rs,"&"){
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rs = string(rs[0:strings.Count(rs,"")-1])
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}
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rs = arr[0] + "?" + rs
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fmt.Println(rs)
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} else {
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//rs = requestURI + "?" //+ po.ParamName + "time=" + con.Itoa(time.Now().Second())
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rs = requestURI + "?"
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}
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po.Href = rs
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}
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/**
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* 1...197 198 199 200
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*/
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func fun4(po *PageOptions, totalPages int) string {
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rs := ""
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rs += getHeader(po, totalPages)
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rs += "<li><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(1) + "'>" + con.Itoa(1) + "</a><li>"
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rs += "<li><a href=''>...</a></li>"
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for i := totalPages - po.LinkItemCount; i <= totalPages; i++ {
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if po.CurrentPage != i {
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rs += "<li><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(i) + "'>" + con.Itoa(i) + "</a></li>"
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} else {
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rs += "<li class=\"active\"><a href=\"###\">" + con.Itoa(i) + " <span class=\"sr-only\">(current)</span></a></li>"
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}
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}
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rs += getFooter(po, totalPages)
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return rs
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}
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/**
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* 1...6 7 8 9 10 11 12 13 14 15... 200
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*/
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func fun3(po *PageOptions, totalpages int) string {
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var rs string = ""
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rs += getHeader(po, totalpages)
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rs += "<li><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(1) + "'>" + con.Itoa(1) + "</a></li>"
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rs += "<a href=''>...</a>"
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for i := po.CurrentPage - po.LinkItemCount/2 + 1; i <= po.CurrentPage+po.LinkItemCount/2-1; i++ {
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if po.CurrentPage != i {
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rs += "<a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(i) + "'>" + con.Itoa(i) + "</a>"
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} else {
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rs += "<li class=\"active\"><a href=\"###\">" + con.Itoa(i) + " <span class=\"sr-only\">(current)</span></a></li>"
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}
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}
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rs += "<a href=''>...</a>"
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rs += "<li><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(totalpages) + "'>" + con.Itoa(totalpages) + "</a></li>"
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rs += getFooter(po, totalpages)
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return rs
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}
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/**
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* totalpages > po.LinkItemCount po.CurrentPage < po.LinkItemCount
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* 123456789...200
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*/
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func fun2(po *PageOptions, totalpages int) string {
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var rs string = ""
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rs += getHeader(po, totalpages)
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for i := 1; i <= po.LinkItemCount+1; i++ {
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if i == po.LinkItemCount {
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rs += "<li><a href=\"" + po.Href + "&" + po.ParamName + "=" + con.Itoa(i) + "\">...</a></li>"
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} else if i == po.LinkItemCount+1 {
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rs += "<li><a href=\"" + po.Href + "&" + po.ParamName + "=" + con.Itoa(totalpages) + "\">" + con.Itoa(totalpages) + "</a></li>"
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} else {
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if po.CurrentPage != i {
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rs += "<li><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(i) + "'>" + con.Itoa(i) + "</a></li>"
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} else {
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rs += "<li class=\"active\"><a href=\"###\">" + con.Itoa(i) + " <span class=\"sr-only\">(current)</span></a></li>"
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}
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}
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}
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rs += getFooter(po, totalpages)
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return rs
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}
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/**
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* totalpages <= po.LinkItemCount
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* 显示完全 12345678910
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*/
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func fun1(po *PageOptions, totalpages int) string {
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var rs string = ""
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rs += getHeader(po, totalpages)
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for i := 1; i <= totalpages; i++ {
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if po.CurrentPage != i {
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rs += "<li><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(i) + "'>" + con.Itoa(i) + "</a></li>"
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} else {
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rs += "<li class=\"active\"><a href=\"###\">" + con.Itoa(i) + " <span class=\"sr-only\">(current)</span></a></li>"
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}
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}
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rs += getFooter(po, totalpages)
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return rs
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}
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/**
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* 头部
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*/
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func getHeader(po *PageOptions, totalpages int) string {
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var rs string = "<ul class=\"pagination\">"
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if po.EnableFirstLastLink { //当首页,尾页都设定的时候,就显示
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rs += "<li" + judgeDisable(po, totalpages, 0) + " ><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(1) + "'>" + po.FirstPageText + "</a></li>"
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}
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if po.EnablePreNexLink { // disabled=\"disabled\"
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var a int = po.CurrentPage - 1
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if po.CurrentPage == 1 {
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a = 1
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}
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rs += "<li" + judgeDisable(po, totalpages, 0) + " ><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(a) + "'>" + po.PrePageText + "</a></li>"
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}
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return rs
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}
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/**
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* 尾部
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*/
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func getFooter(po *PageOptions, totalpages int) string {
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var rs string = ""
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if po.EnablePreNexLink {
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var a int = po.CurrentPage + 1
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if po.CurrentPage == totalpages {
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a = totalpages
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}
|
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|
rs += "<li " + judgeDisable(po, totalpages, 1) + " ><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(a) + "'>" + po.NextPageText + "</a></li>"
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}
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if po.EnableFirstLastLink { //当首页,尾页都设定的时候,就显示
|
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|
|
rs += "<li " + judgeDisable(po, totalpages, 1) + " ><a href='" + po.Href + "&" + po.ParamName + "=" + con.Itoa(totalpages) + "'>" + po.LastPageText + "</a></li>"
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}
|
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|
|
|
rs += "</ul>"
|
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return rs
|
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|
|
}
|
|
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|
|
|
|
|
|
|
/**
|
|
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|
|
|
* 设置默认值
|
|
|
|
|
|
*/
|
|
|
|
|
|
func setDefault(po *PageOptions, totalpages int) *PageOptions {
|
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|
|
|
if len(po.FirstPageText) <= 0 {
|
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|
|
po.FirstPageText = "首页"
|
|
|
|
|
|
}
|
|
|
|
|
|
if len(po.LastPageText) <= 0 {
|
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|
|
po.LastPageText = "尾页"
|
|
|
|
|
|
}
|
|
|
|
|
|
if len(po.PrePageText) <= 0 {
|
|
|
|
|
|
po.PrePageText = "上一页"
|
|
|
|
|
|
}
|
|
|
|
|
|
if len(po.NextPageText) <= 0 {
|
|
|
|
|
|
po.NextPageText = "下一页"
|
|
|
|
|
|
}
|
|
|
|
|
|
if po.CurrentPage >= totalpages {
|
|
|
|
|
|
po.CurrentPage = totalpages
|
|
|
|
|
|
}
|
|
|
|
|
|
if po.CurrentPage <= 1 {
|
|
|
|
|
|
po.CurrentPage = 1
|
|
|
|
|
|
}
|
|
|
|
|
|
if po.LinkItemCount == 0 {
|
|
|
|
|
|
po.LinkItemCount = 10
|
|
|
|
|
|
}
|
|
|
|
|
|
if po.PageSize == 0 {
|
|
|
|
|
|
po.PageSize = 20
|
|
|
|
|
|
}
|
|
|
|
|
|
if len(po.ParamName) <= 0 {
|
|
|
|
|
|
po.ParamName = "pno"
|
|
|
|
|
|
}
|
|
|
|
|
|
return po
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
*判断首页尾页 上一页下一页是否能用
|
|
|
|
|
|
*/
|
|
|
|
|
|
func judgeDisable(po *PageOptions, totalpages int, h_f int) string {
|
|
|
|
|
|
var rs string = ""
|
|
|
|
|
|
//判断头部
|
|
|
|
|
|
if h_f == 0 {
|
|
|
|
|
|
if po.CurrentPage == 1 {
|
|
|
|
|
|
rs = " "
|
|
|
|
|
|
}
|
|
|
|
|
|
} else {
|
|
|
|
|
|
if po.CurrentPage == totalpages {
|
|
|
|
|
|
rs = " "
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
return rs
|
|
|
|
|
|
}
|
