gorm外键的规范性写法示例:

type DtProject struct {
    gorm.Model
    Name  string `json:"name" form:"name" gorm:"column:name;comment:;type:varchar(191);"`
}

type DtProjectWorkerRel struct {
    gorm.Model
    ProjectId    uint   `json:"projectId" gorm:"comment:项目id;unique_index:project_company_idcard_idx"`
    Project DtProject `gorm:"foreignKey:ID;references:ProjectId;"`
    }

gorm:"foreignKey:关联表的结构体字段;references:当前表的结构体字段;

报错处理: define a valid foreign key for relations or implement the Valuer/Scanner interface

type UpLoadFile struct {
    gorm.Model
    FileName    string    `json:"file_name" gorm:"comment:文件名"`
    FileChunk   []FileChunk `json:"file_chunk" gorm:"-"`
}

type FileChunk struct {
    gorm.Model
    FileId          uint
    FileChunkNumber int
    FileChunkPath   string
}