49 lines
957 B
Go
49 lines
957 B
Go
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package models
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import (
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"math"
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)
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type PageResult struct {
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List Articles `json:"list"`
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Total int `json:"total"`
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Page int `json:"page"`
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PageSize int `json:"pageSize"`
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TotalPage int
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}
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func Pagination(articles *Articles, page int, pageSize int) PageResult {
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articleLen := len(*articles)
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totalPage := int(math.Floor(float64(articleLen / pageSize)))
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if (articleLen % pageSize) != 0 {
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totalPage++
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}
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result := PageResult{
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Total: articleLen,
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Page: page,
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PageSize: pageSize,
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TotalPage: totalPage,
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}
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if page < 1 {
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result.Page = 1
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}
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if page > result.TotalPage {
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result.Page = result.TotalPage
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}
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if articleLen <= result.PageSize {
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result.List = (*articles)[0:articleLen]
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} else {
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startNum := (result.Page - 1) * result.PageSize
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endNum := startNum + result.PageSize
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if endNum > articleLen {
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endNum = articleLen
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}
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result.List = (*articles)[startNum:endNum]
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}
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return result
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}
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