How can I map MySQL\'s bit(1) type to a Go type using Beego\'s ORM?

MySQL's Bit Type: A Perfect Match with Go's Custom Bool

Question:
In a database table with a bit(1) type column, how can I map it to a Go type using Beego's ORM?

Answer:

Since Go doesn't have a built-in type for bit(1), the recommended approach is to create a custom bool type.

Custom Bool for MySQL's Bit(1)
To solve this issue, a custom bool type can be created to handle the bit(1) column.

type BitBool bool

// Value converts BitBool to a bitfield (BIT(1)) for MySQL storage.
func (b BitBool) Value() (driver.Value, error) {
    if b {
        return []byte{1}, nil
    } else {
        return []byte{0}, nil
    }
}

// Scan converts the incoming bitfield from MySQL into a BitBool.
func (b *BitBool) Scan(src interface{}) error {
    v, ok := src.([]byte)
    if !ok {
        return errors.New("bad []byte type assertion")
    }
    *b = v[0] == 1
    return nil
}

Usage in Go Struct
To use the custom BitBool type in a Go struct, simply declare it as the type for the corresponding field:

type BaseModel struct {
    Id          string           `orm:"pk";form:"id"`
    CreatedTime time.Time        `orm:"auto_now_add;type(datetime)";form:"-"`
    UpdatedTime time.Time        `orm:"auto_now;type(datetime)";form:"-"`
    Deleted     BitBool  `form:"-"`
}

By using a custom BitBool type, you can map MySQL's bit(1) type to a Go type that handles the bit manipulation appropriately, avoiding the errors that arise from using the default bool type.

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