gorm 一对一 一对多 例子
数据库sql
CREATE TABLE `allin_asset` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`instance_id` varchar(255) DEFAULT '' COMMENT '实例ID',
`instance_name` varchar(255) DEFAULT '' COMMENT '标签',
`host_name` varchar(255) DEFAULT '' COMMENT '系统名字',
`zone` varchar(255) DEFAULT '' COMMENT '可用区',
`business_id` varchar(255) DEFAULT '' COMMENT '产品线',
`private_ip` varchar(255) DEFAULT '' COMMENT '内网IP',
`public_ip` varchar(255) DEFAULT '' COMMENT '外网IP',
`os_name` varchar(255) DEFAULT '' COMMENT '系统版本',
`cpu` int(11) unsigned DEFAULT NULL COMMENT 'CPU',
`memory` int(11) unsigned DEFAULT NULL COMMENT '内存',
`created_on` int(11) unsigned DEFAULT NULL COMMENT '创建时间',
`modified_on` int(11) unsigned DEFAULT NULL COMMENT '更新时间',
`expired_on` int(11) unsigned DEFAULT NULL COMMENT '过期时间',
`status` varchar(255) DEFAULT '' COMMENT '运行状态',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='资产管理';
CREATE TABLE `allin_business` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(255) COMMENT '产品线名字',
`created_on` int(11) unsigned DEFAULT NULL COMMENT '创建时间',
`modified_on` int(11) unsigned DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='产品线管理';
CREATE TABLE `allin_module` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(255) COMMENT '模块名字',
`created_on` int(11) unsigned DEFAULT NULL COMMENT '创建时间',
`modified_on` int(11) unsigned DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='模块管理';
CREATE TABLE `allin_asset_module` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`asset_id` int(11) unsigned DEFAULT NULL COMMENT '资产ID',
`module_id` int(11) unsigned DEFAULT NULL COMMENT '组ID',
`created_on` int(11) unsigned DEFAULT NULL COMMENT '创建时间',
`modified_on` int(11) unsigned DEFAULT NULL COMMENT '更新时间',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='资产_模块_管理';
表结构
type Business struct {
Model
Name string `json:"name"`
}
type Module struct {
Model
Name string `json:"name"`
}
type Asset struct {
Model
InstanceId string `json:"instance_id"`
InstanceName string `json:"instance_name"`
HostName string `json:"host_name"`
Zone string `json:"zone"`
PrivateIp string `json:"private_ip"`
PublicIp string `json:"public_ip"`
OsName string `json:"os_name"`
Cpu int `json:"cpu"`
Memory int `json:"memory"`
ExpiredOn int `json:"expired_on"`
Status string `json:"status"`
BusinessId int `json:"business_id" gorm:"index"`
Business Business `json:"business"` // 产品线 一对一
Module []Module `json:"module" gorm:"many2many:asset_module;"` // 模块 多对多
}
func GetAsset(id int) (asset Asset) {
db.Where("id = ?", id).First(&asset)
db.Model(&asset).Related(&asset.Business).Related(&asset.Module, "module")
return
}
函数
func GetAsset(id int) (asset Asset) {
db.Where("id = ?", id).First(&asset)
db.Model(&asset).Related(&asset.Business).Related(&asset.Module, "Module")
return
}
func GetAssets(pageNum int, pageSize int, maps interface{}) (assets []Asset) {
db.Preload("Business",).Preload("Module",).Where(maps).Offset(pageNum).Limit(pageSize).Find(&assets)
return
}
func AddAsset(data map[string]interface{}, modules []int ) bool {
asset := &Asset{
InstanceId: data["instance_id"].(string),
InstanceName: data["instance_name"].(string),
HostName: data["host_name"].(string),
Zone: data["zone"].(string),
BusinessId: data["business_id"].(int),
PrivateIp: data["private_ip"].(string),
PublicIp: data["public_ip"].(string),
OsName: data["os_name"].(string),
Cpu: data["cpu"].(int),
Memory: data["memory"].(int),
ExpiredOn: data["expired_on"].(int),
Status: data["status"].(string),
}
module := []Module{}
db.Where("id in (?)", modules).Find(&module)
db.Create(&asset).Association("Module").Append(module) //.Delete .Replace .Clear() .Count()
return true
}
func ExistAssetByID(id int) bool {
var asset Asset
db.Select("id").Where("id = ?", id).First(&asset)
if asset.ID > 0 {
return true
}
return false
}
func DeleteAsset(id int) bool {
asset := Asset{}
db.Where("id = ?", id).Find(&asset)
db.Model(&asset).Association("Module").Clear()
db.Where("id = ?", id).Delete(asset)
return true
}
func EditAsset(id int, data interface{},modules []int) bool {
module := []Module{}
db.Where("id in (?)", modules).Find(&module)
asset := Asset{}
db.Where("id = ?", id).Find(&asset)
db.Model(&asset).Association("Module").Replace(module)
db.Model(&asset).Updates(data)
return true
}
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