Creating a GORM custom data type, how to get context in scan?

Question

I'm trying to write a Gorm custom data type: https://gorm.io/docs/data_types.html

type MyDataType struct {}

func (f *MyDataType) Scan(value interface{}) error {
    //
}

func (f MyDataType) Value() (driver.Value, error) {
    //
}

For some reasons, I need to access context in Scan or to be able to retrieve field tags.

Is there a way to do this ? Thanks

Answer 1

Value are based on user space which you may need to change the code to be looks like :

type MyDataType struct {}

func (f *MyDataType) Scan(context context.Context, value interface{}) error {
    // proceed the context right there
}

func (f MyDataType) Value() (driver.Value, error) {
    //
}