我有以下结构

type datacenter struct {
    Name          string    `gorm:"unique" json:"name"`
    Datacenter_Id uuid.UUID `gorm:"type:uuid;primaryKey" json:"datacenter_id"`
    Cluster_List []Cluster  `gorm:"foreignKey:Datacenter_Id" json:"clusters"`
    CreatedAt    time.Time
    UpdatedAt    time.Time
    DeletedAt    gorm.DeletedAt `gorm:"index"`
}

type Cluster struct {
    Cluster_Id      uuid.UUID      `gorm:"type:uuid;primary_key;unique" json:"id"`
    Num             int            `gorm:"unique" json:"num"`
    Datacenter_Id   uuid.UUID      `json:"Datacenter_id"`                        
    Servers_List    []Server       `gorm:"foreignKey:Cluster_Id" json:"servers"`
    CreatedAt       time.Time      `json:"createdAt"`
    UpdatedAt       time.Time      `json:"updatedAt"`
    DeletedAt       gorm.DeletedAt `gorm:"index"`
}

type Server struct {
    Scale_unit    int       `gorm:"unique" json:"scale_unit"`
    Server_Id     uuid.UUID `gorm:"type:uuid;primaryKey" json:"server_id"`
    IP_Address    string    `json:"ip_address"`
    Cluster_Id    uuid.UUID `json:"cluster_id"`
    CreatedAt     time.Time
    UpdatedAt     time.Time
    DeletedAt     gorm.DeletedAt `gorm:"index"`
}

我调用gorm automigrate代码在postgresql中创建表

if err := My_DB.AutoMigrate(&models.Datacenter{}); err != nil {
        log.Fatalf("Error auto-migrating: %v", err)
    }

    if err := My_DB.AutoMigrate(&models.Cluster{}); err != nil {
        log.Fatalf("Error auto-migrating: %v", err)
    }

    if err := My_DB.AutoMigrate(&models.Server{}); err != nil {
        log.Fatalf("Error auto-migrating: %v", err)
    }

型
但我一直得到下面的错误

2023/12/21 22:50:49 /app/database/db.go:116 ERROR: there is no unique constraint matching given keys for referenced table "datacenters" (SQLSTATE 42830)
[13.584ms] [rows:0] CREATE TABLE "clusters" ("cluster_id" uuid UNIQUE,"num" bigint UNIQUE,"datacenter_id" uuid,"created_at" timestamptz,"updated_at" timestamptz,"deleted_at" timestamptz,PRIMARY KEY ("cluster_id"),CONSTRAINT "fk_datacenters_clusters_list" FOREIGN KEY ("datacenter_id") REFERENCES "datacenters"("datacenter_id"))
2023/12/21 22:50:49 Error auto-migrating: ERROR: there is no unique constraint matching given keys for referenced table "datacenters" (SQLSTATE 42830)

型
我的想法是有一个数据中心结构，有一堆集群，每个集群包含许多服务器。我试图建立这种关系使用外键，我一直打与上述错误，我有“唯一”约束datacenter_id，但它仍然给我同样的错误。我该如何解决这个问题？