smart_canteen/app/db/db_class_with_user.go

package db

import (
	model2 "applet/app/db/model"
	"applet/app/utils/logx"
	"reflect"
	"xorm.io/xorm"
)

type ClassWithUser struct {
	model2.ClassWithUser `xorm:"extends"`
	model2.UserIdentity  `xorm:"extends"`
	model2.Class         `xorm:"extends"`
	model2.Grade         `xorm:"extends"`
	model2.Enterprise    `xorm:"extends"`
}

func (ClassWithUser) TableName() string {
	return "class_with_user"
}

type ClassWithUserDb struct {
	Db *xorm.Engine `json:"db"`
}

func (classWithUserDb *ClassWithUserDb) Set() { // set方法
	classWithUserDb.Db = Db
}

func (classWithUserDb *ClassWithUserDb) GetInfoByUserIdentityId(userIdentityId int) (m *ClassWithUser, err error) {
	m = new(ClassWithUser)
	has, err := classWithUserDb.Db.Where("class_with_user.user_identity_id =?", userIdentityId).
		Join("LEFT", "user_identity", "class_with_user.user_identity_id = user_identity.id").
		Join("LEFT", "class", "class_with_user.class_id = class.id").
		Join("LEFT", "grade", "class.grade_id = grade.id").
		Join("LEFT", "enterprise", "grade.enterprise_id = enterprise.id").
		Get(m)
	if err != nil {
		return nil, logx.Error(err)
	}
	if has == false {
		return nil, nil
	}
	return m, nil
}

func (classWithUserDb *ClassWithUserDb) GetClassWithUserByUserIdentityId(userIdentityId int) (m *model2.ClassWithUser, err error) {
	m = new(model2.ClassWithUser)
	has, err := classWithUserDb.Db.Where("user_identity_id =?", userIdentityId).Get(m)
	if err != nil {
		return nil, logx.Error(err)
	}
	if has == false {
		return nil, nil
	}
	return m, nil
}

func (classWithUserDb *ClassWithUserDb) ClassWithUserInsert(m *model2.ClassWithUser) (int, error) {
	_, err := classWithUserDb.Db.InsertOne(m)
	if err != nil {
		return 0, err
	}
	return m.Id, nil
}

func (classWithUserDb *ClassWithUserDb) ClassWithUserInsertBySession(session *xorm.Session, m *model2.ClassWithUser) (int, error) {
	_, err := session.InsertOne(m)
	if err != nil {
		return 0, err
	}
	return m.Id, nil
}

func (classWithUserDb *ClassWithUserDb) FindUserIdentity(classId interface{}) (*[]model2.ClassWithUser, error) {
	var m []model2.ClassWithUser
	if reflect.TypeOf(classId).Kind() == reflect.Slice {
		if err := classWithUserDb.Db.In("class_id", classId).Desc("id").Find(&m); err != nil {
			return nil, logx.Error(err)
		}
	} else {
		if err := classWithUserDb.Db.Where("class_id =?", classId).Desc("id").Find(&m); err != nil {
			return nil, logx.Error(err)
		}
	}
	return &m, nil
}

func (classWithUserDb *ClassWithUserDb) ClassWithUserUpdateByUserIdentity(userIdentityId interface{}, m *model2.ClassWithUser, forceColums ...string) (int64, error) {
	var (
		affected int64
		err      error
	)
	if forceColums != nil {
		affected, err = classWithUserDb.Db.Where("user_identity_id=?", userIdentityId).Cols(forceColums...).Update(m)
	} else {
		affected, err = classWithUserDb.Db.Where("user_identity_id=?", userIdentityId).Update(m)
	}
	if err != nil {
		return 0, err
	}
	return affected, nil
}