smart_canteen/app/db/db_grade.go

package db

import (
	"applet/app/db/model"
	"applet/app/utils/logx"
	"reflect"
	"xorm.io/xorm"
)

type GradeDb struct {
	Db           *xorm.Engine `json:"db"`
	EnterpriseId int          `json:"enterprise_id"`
}

func (gradeDb *GradeDb) Set(enterpriseId int) { // set方法
	gradeDb.Db = Db
	gradeDb.EnterpriseId = enterpriseId
}

func (gradeDb *GradeDb) FindGrade() (*[]model.Grade, error) {
	var m []model.Grade
	if err := gradeDb.Db.Desc("id").Where("enterprise_id =?", gradeDb.EnterpriseId).Find(&m); err != nil {
		return nil, logx.Error(err)
	}
	return &m, nil
}

func (gradeDb *GradeDb) GradeDeleteBySession(id interface{}) (int64, error) {
	if reflect.TypeOf(id).Kind() == reflect.Slice {
		return gradeDb.Db.In("id", id).Delete(model.Grade{})
	} else {
		return gradeDb.Db.Where("id = ?", id).Delete(model.Grade{})
	}
}

func (gradeDb *GradeDb) ClassDeleteBySessionForEnterprise(session *xorm.Session, enterpriseId interface{}) (int64, error) {
	if reflect.TypeOf(enterpriseId).Kind() == reflect.Slice {
		return session.In("enterprise_id", enterpriseId).Delete(model.Grade{})
	} else {
		return session.Where("enterprise_id = ?", enterpriseId).Delete(model.Grade{})
	}
}

func (gradeDb *GradeDb) GradeInsert(m *model.Grade) (int, error) {
	_, err := gradeDb.Db.InsertOne(m)
	if err != nil {
		return 0, err
	}
	return m.Id, nil
}

func (gradeDb *GradeDb) GradeUpdate(m *model.Grade, columns ...string) (int64, error) {
	affected, err := gradeDb.Db.Where("id =?", m.Id).Cols(columns...).Update(m)
	if err != nil {
		return 0, err
	}
	return affected, nil
}

func (gradeDb *GradeDb) GetGrade(id int) (m *model.Grade, err error) {
	m = new(model.Grade)
	has, err := gradeDb.Db.Where("id =?", id).Get(m)
	if err != nil {
		return nil, logx.Error(err)
	}
	if has == false {
		return nil, nil
	}
	return m, nil
}