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package store
import (
"database/sql/driver"
"encoding/json"
)
// StringSlice is a []string which will be stored in a database as a JSON array.
type StringSlice []string
var _ driver.Valuer = (*StringSlice)(nil)
// Value implements the driver.Valuer interface, marshalling the raw value to
// a JSON array.
func (s StringSlice) Value() (driver.Value, error) {
v, err := json.Marshal(s)
if err != nil {
return nil, err
}
return string(v), err
}
// Scan implements the sql.Scanner interface, unmarshalling the value coming
// off the wire and storing the result in the StringSlice.
func (s *StringSlice) Scan(value interface{}) error {
if value == nil {
s = &StringSlice{}
return nil
}
var err error
v, err := driver.String.ConvertValue(value)
if err == nil {
if v, ok := v.([]byte); ok {
err = json.Unmarshal(v, s)
}
}
return err
}
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