Golang分页

//分页方法,根据传递过来的页数,每页数,总数,返回分页的内容 7个页数 前 1,2,3,4,5 后 的格式返回,小于5页返回具体页数

func Paginator(page, prepage int, nums int64) map[string]interface{} {

var firstpage int //前一页地址

var lastpage int  //后一页地址

//根据nums总数,和prepage每页数量 生成分页总数

totalpages := int(math.Ceil(float64(nums) / float64(prepage))) //page总数

if page > totalpages {

page = totalpages

}

if page <= 0 {

page = 1

}

var pages []int

switch {

case page >= totalpages-5 && totalpages > 5: //最后5页

start := totalpages - 5 + 1

firstpage = page - 1

lastpage = int(math.Min(float64(totalpages), float64(page+1)))

pages = make([]int, 5)

for i, _ := range pages {

pages[i] = start + i

}

case page >= 3 && totalpages > 5:

start := page - 3 + 1

pages = make([]int, 5)

firstpage = page - 3

for i, _ := range pages {

pages[i] = start + i

}

firstpage = page - 1

lastpage = page + 1

default:

pages = make([]int, int(math.Min(5, float64(totalpages))))

for i, _ := range pages {

pages[i] = i + 1

}

firstpage = int(math.Max(float64(1), float64(page-1)))

lastpage = page + 1

//fmt.Println(pages)

}

paginatorMap := make(map[string]interface{})

paginatorMap["pages"] = pages

paginatorMap["totalpages"] = totalpages

paginatorMap["firstpage"] = firstpage

paginatorMap["lastpage"] = lastpage

paginatorMap["currpage"] = page

return paginatorMap

}

html是这样的

  共{{.totals}}条记录 共记{{.paginator.totalpages}} 页 当前页  {{.paginator.currpage}}

 

   

       

  • «
  •     {{range $index,$page := .paginator.pages}}

          {{$page}} 

        {{end}}

         

  • »
  •    

 

controller里是这样的

res := models.Paginator(pa, pre_page, totals)

this.Data["paginator"] = res


本文来自:CSDN博客

感谢作者:ciwei_ice

查看原文:golang的一个分页方法

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