在Go Lang中分配给结构的指针的属性

Question

I'm getting the following error
Cannot use '"No 3A4"' (type string) as type *string in assignment

How can I add a default value for the query doesn't return rows so I can't use the row.Scan() function, sample code below.

func (orders *Orders) getOrderStatus() {
    var err error
    for _, order := range *orders {
        row := db.QueryRow("SELECT status FROM mss_orders WHERE externalorderkey = ? ORDER BY tipo ASC LIMIT 1", order.PoNumber)
        err = row.Scan(&order.Status)

        if err != nil {
            &order.Status = "No 3A4"    <----- How can I do this?
        }

        fmt.Printf("%+v
", order)
    }
}

Answer 1

Based on the error, we know that &order.Status is type *string. Yet you're trying to assign it a value of type string. You could make a pointer to the string instead:

str := "No 3A4"
&order.Status = &str

Or you could just assign to order.Status directly:

order.Status = "No 3A4"