Gorm 可以新增分页功能吗？

可以新增分页功能吗？在实际的项目中分页功能十分常见。

type PageModel struct {
    List  *interface{} `json:"list"`
    Total *int64       `json:"total"`
    Page  int          `json:"page"`
    Size  int          `json:"size"`
}

type PageQueryModel struct {
    Page int `json:"page"`
    Size int `json:"size"`
}

func (db *CustomDB) Page(tx *gorm.DB, pageQuery model.PageQueryModel, dbModeType interface{}) *model.PageModel {

    //1.默认参数
    if pageQuery.Size < 1 {
        pageQuery.Size = 10
    }
    if pageQuery.Page < 1 {
        pageQuery.Page = 1
    }

    typeOfT := reflect.TypeOf(dbModeType)
    dbModel := reflect.New(typeOfT).Interface()
    sliceOfT := reflect.SliceOf(typeOfT)
    list := reflect.MakeSlice(sliceOfT, 0, 0).Interface()
    var total int64
    tx.Model(&dbModel).Count(&total)

    pageModel := &model.PageModel{
        List:  &list,
        Total: &total,
        Page:  pageQuery.Page,
        Size:  pageQuery.Size,
    }
    offset := pageQuery.Size * (pageQuery.Page - 1)
    tx.Limit(pageModel.Size).Offset(offset).Find(&list)

    pageModel.List = &list
    return pageModel
}

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Comment From: jinzhu

https://gorm.io/docs/scopes.html#Pagination