com.snow.auto_monitor/app/models/device/device.go

package device

import (
	"sync"
	"time"

	"github.com/qit-team/snow-core/db"
)

var (
	once sync.Once
	m    *deviceModel
)

/**
 * Device
 */
type Device struct {
	Id        int64 `xorm:"pk autoincr"` //注：使用getOne 或者ID() 需要设置主键
	DeviceNo  string
	Phone     string
	Code      int64
	CreatedAt time.Time `xorm:"created"`
}

/**
 * 表名规则
 * @wiki http://gobook.io/read/github.com/go-xorm/manual-zh-CN/chapter-02/3.tags.html
 */
func (m *Device) TableName() string {
	return "device"
}

/**
 * 私有化，防止被外部new
 */
type deviceModel struct {
	db.Model //组合基础Model，集成基础Model的属性和方法
}

// 单例模式
func GetInstance() *deviceModel {
	once.Do(func() {
		m = new(deviceModel)
		//m.DiName = "" //设置数据库实例连接，默认db.SingletonMain
	})
	return m
}

/**
 * 查询主键ID的记录
 * @param id 主键ID
 * @return has 是否有记录
 * @return err 错误信息
 * @return device 查询结果
 */
func (m *deviceModel) GetById(id int64) (device *Device, has bool, err error) {
	device = &Device{}
	has, err = m.GetDb().ID(id).Get(device)
	if err != nil || !has {
		device = nil
	}
	return
}

func (m *deviceModel) Search(id int64, device_no string, phone string, code int64, startTime string, endTime string, limit int, page int) (device []*Device, err error) {
	device = make([]*Device, 0)
	sql := "1=1"
	var args []interface{}
	if id != 0 {
		sql += " and id = ?"
		args = append(args, id)
	}
	if device_no != "" {
		sql += " and device_no = ?"
		args = append(args, device_no)
	}
	if phone != "" {
		sql += " and phone = ?"
		args = append(args, phone)
	}
	if code != 0 {
		sql += " and code = ?"
		args = append(args, code)
	}
	if startTime != "" && endTime != "" {
		sql += " and created_at >= ? and created_at <= ?"
		args = append(args, startTime, endTime)
	}
	err = m.GetDb().Where(sql, args...).OrderBy("created_at desc").Limit(limit, page).Find(&device)
	return
}

func (m *deviceModel) CountAll(id int64, device_no string, phone string, code int64, startTime string, endTime string) (res int64, err error) {
	sql := "1=1"
	var args []interface{}
	if id != 0 {
		sql += " and id = ?"
		args = append(args, id)
	}
	if device_no != "" {
		sql += " and device_no = ?"
		args = append(args, device_no)
	}
	if phone != "" {
		sql += " and phone = ?"
		args = append(args, phone)
	}
	if code != 0 {
		sql += " and code = ?"
		args = append(args, code)
	}
	if startTime != "" && endTime != "" {
		sql += " and created_at >= ? and created_at <= ?"
		args = append(args, startTime, endTime)
	}
	res, err = m.GetDb().Table("device").Where(sql, args...).Count()
	return
}

func (m *deviceModel) Create(device *Device) (affected int64, err error) {
	device.CreatedAt = time.Now()
	affected, err = m.GetDb().Insert(device)
	return
}

func (m *deviceModel) Update(device *Device) (affected int64, err error) {
	affected, err = m.GetDb().ID(device.Id).Update(device)
	return
}

func (m *deviceModel) Delete(id int64) (affected int64, err error) {
	affected, err = m.GetDb().ID(id).Delete(&Device{})
	return
}