37 lines
626 B
Go
37 lines
626 B
Go
package types
|
|
|
|
import (
|
|
"bytes"
|
|
"database/sql"
|
|
"encoding/json"
|
|
)
|
|
|
|
type NullFloat64 struct {
|
|
sql.NullFloat64
|
|
}
|
|
|
|
func (f *NullFloat64) MarshalJSON() ([]byte, error) {
|
|
if !f.Valid {
|
|
return []byte("null"), nil
|
|
}
|
|
return json.Marshal(f.Float64)
|
|
}
|
|
|
|
func (f *NullFloat64) UnmarshalJSON(b []byte) error {
|
|
if bytes.Equal(b, []byte("null")) {
|
|
f.Float64 = 0
|
|
f.Valid = false
|
|
return nil
|
|
}
|
|
var x interface{}
|
|
var err error
|
|
json.Unmarshal(b, &x)
|
|
switch x.(type) {
|
|
case float64:
|
|
err = json.Unmarshal(b, &f.Float64)
|
|
case map[string]interface{}:
|
|
err = json.Unmarshal(b, &f.NullFloat64)
|
|
}
|
|
f.Valid = true
|
|
return err
|
|
}
|