Files
mayfly-go/server/pkg/model/model.go

238 lines
6.8 KiB
Go
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

package model
import (
"fmt"
"mayfly-go/pkg/biz"
"mayfly-go/pkg/global"
"strconv"
"strings"
"time"
"gorm.io/gorm"
)
type Model struct {
Id uint64 `json:"id"`
CreateTime *time.Time `json:"createTime"`
CreatorId uint64 `json:"creatorId"`
Creator string `json:"creator"`
UpdateTime *time.Time `json:"updateTime"`
ModifierId uint64 `json:"modifierId"`
Modifier string `json:"modifier"`
}
// 设置基础信息. 如创建时间,修改时间,创建者,修改者信息
func (m *Model) SetBaseInfo(account *LoginAccount) {
nowTime := time.Now()
isCreate := m.Id == 0
if isCreate {
m.CreateTime = &nowTime
}
m.UpdateTime = &nowTime
if account == nil {
return
}
id := account.Id
name := account.Username
if isCreate {
m.CreatorId = id
m.Creator = name
}
m.Modifier = name
m.ModifierId = id
}
func Tx(funcs ...func(db *gorm.DB) error) (err error) {
tx := global.Db.Begin()
defer func() {
if r := recover(); r != nil {
tx.Rollback()
err = fmt.Errorf("%v", err)
}
}()
for _, f := range funcs {
err = f(tx)
if err != nil {
tx.Rollback()
return
}
}
err = tx.Commit().Error
return
}
// 根据id获取实体对象。model需为指针类型需要将查询出来的值赋值给model
//
// 若error不为nil则为不存在该记录
// @param model 数据库映射实体模型
func GetById(model any, id uint64, cols ...string) error {
return global.Db.Select(cols).Where("id = ?", id).First(model).Error
}
// 根据map条件查询列表map中的值如果为数组则使用in查询
// @param model 数据库映射实体模型
func GetByIdIn(model any, list any, ids []uint64, orderBy ...string) {
var orderByStr string
if orderBy == nil {
orderByStr = "id desc"
} else {
orderByStr = strings.Join(orderBy, ",")
}
global.Db.Model(model).Where("id in (?)", ids).Order(orderByStr).Find(list)
}
// 根据map指定条件查询列表
func SelectByMap(model any, list any, where map[string]any, orderBy ...string) {
var orderByStr string
if orderBy == nil {
orderByStr = "id desc"
} else {
orderByStr = strings.Join(orderBy, ",")
}
global.Db.Model(model).Where(where).Order(orderByStr).Find(list)
}
// 根据model指定条件统计数量
func CountBy(model any) int64 {
var count int64
global.Db.Model(model).Where(model).Count(&count)
return count
}
// 根据map为条件统计数量map中的值如果为数组则使用in查询
// @param model 数据库映射实体模型
// @param where 条件map
func CountByMap(model any, where map[string]any) int64 {
var count int64
global.Db.Model(model).Where(where).Count(&count)
return count
}
// 根据统计sql返回统计数量
func CountBySql(sql string) int64 {
var count int64
global.Db.Raw(sql).Scan(&count)
return count
}
// 根据id更新model更新字段为model中不为空的值即int类型不为0ptr类型不为nil这类字段值
// @param model 数据库映射实体模型
func UpdateById(model any) error {
return global.Db.Model(model).Updates(model).Error
}
// 根据id删除model
// @param model 数据库映射实体模型
func DeleteById(model any, id uint64) error {
return global.Db.Delete(model, "id = ?", id).Error
}
// 根据条件删除
// @param model 数据库映射实体模型
func DeleteByCondition(model any) error {
return global.Db.Where(model).Delete(model).Error
}
// 插入model
// @param model 数据库映射实体模型
func Insert(model any) error {
return global.Db.Create(model).Error
}
// 获取满足model中不为空的字段值条件的所有数据.
//
// @param list为数组类型 如 var users *[]User可指定为非model结构体即只包含需要返回的字段结构体
func ListBy(model any, list any, cols ...string) {
global.Db.Model(model).Select(cols).Where(model).Order("id desc").Find(list)
}
// 获取满足model中不为空的字段值条件的所有数据.
//
// @param list为数组类型 如 var users *[]User可指定为非model结构体
// @param model 数据库映射实体模型
func ListByOrder(model any, list any, order ...string) {
var orderByStr string
if order == nil {
orderByStr = "id desc"
} else {
orderByStr = strings.Join(order, ",")
}
global.Db.Model(model).Where(model).Order(orderByStr).Find(list)
}
// 获取满足model中不为空的字段值条件的单个对象。model需为指针类型需要将查询出来的值赋值给model
//
// 若 error不为nil则为不存在该记录
// @param model 数据库映射实体模型
func GetBy(model any, cols ...string) error {
return global.Db.Select(cols).Where(model).First(model).Error
}
// 获取满足conditionModel中不为空的字段值条件的单个对象。model需为指针类型需要将查询出来的值赋值给model
//
// @param toModel 需要查询的字段
//
// 若 error不为nil则为不存在该记录
func GetByConditionTo(conditionModel any, toModel any) error {
return global.Db.Model(conditionModel).Where(conditionModel).First(toModel).Error
}
// 获取分页结果
func GetPage(pageParam *PageParam, model any, conditionModel any, toModels any, orderBy ...string) *PageResult {
var count int64
err := global.Db.Model(model).Where(conditionModel).Count(&count).Error
biz.ErrIsNilAppendErr(err, " 查询错误:%s")
if count == 0 {
return &PageResult{Total: 0, List: []string{}}
}
page := pageParam.PageNum
pageSize := pageParam.PageSize
var orderByStr string
if orderBy == nil {
orderByStr = "id desc"
} else {
orderByStr = strings.Join(orderBy, ",")
}
err = global.Db.Model(model).Where(conditionModel).Order(orderByStr).Limit(pageSize).Offset((page - 1) * pageSize).Find(toModels).Error
biz.ErrIsNil(err, "查询失败")
return &PageResult{Total: count, List: toModels}
}
// 根据sql获取分页对象
func GetPageBySql(sql string, param *PageParam, toModel any, args ...any) *PageResult {
db := global.Db
selectIndex := strings.Index(sql, "SELECT ") + 7
fromIndex := strings.Index(sql, " FROM")
selectCol := sql[selectIndex:fromIndex]
countSql := strings.Replace(sql, selectCol, "COUNT(*) AS total ", 1)
// 查询count
var count int
err := db.Raw(countSql, args...).Scan(&count).Error
biz.ErrIsNilAppendErr(err, "查询失败: %s")
if count == 0 {
return &PageResult{Total: 0, List: []string{}}
}
// 分页查询
limitSql := sql + " LIMIT " + strconv.Itoa((param.PageNum-1)*param.PageSize) + ", " + strconv.Itoa(param.PageSize)
err = db.Raw(limitSql, args...).Scan(toModel).Error
biz.ErrIsNil(err, "查询失败: %s")
return &PageResult{Total: int64(count), List: toModel}
}
func GetListBySql(sql string, params ...any) []map[string]any {
var maps []map[string]any
global.Db.Raw(sql, params...).Scan(&maps)
return maps
}
func GetListBySql2Model(sql string, toEntity any, params ...any) error {
return global.Db.Raw(sql, params...).Find(toEntity).Error
}
func ExecSql(sql string, params ...any) {
global.Db.Exec(sql, params...)
}