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package gorm
import (
"database/sql"
"errors"
"fmt"
"reflect"
)
// Field model field definition
type Field struct {
*StructField
IsBlank bool
Field reflect.Value
}
// Set set a value to the field
func (field *Field) Set(value interface{}) (err error) {
if !field.Field.IsValid() {
return errors.New("field value not valid")
}
if !field.Field.CanAddr() {
return ErrUnaddressable
}
reflectValue, ok := value.(reflect.Value)
if !ok {
reflectValue = reflect.ValueOf(value)
}
fieldValue := field.Field
if reflectValue.IsValid() {
if reflectValue.Type().ConvertibleTo(fieldValue.Type()) {
fieldValue.Set(reflectValue.Convert(fieldValue.Type()))
} else {
if fieldValue.Kind() == reflect.Ptr {
if fieldValue.IsNil() {
fieldValue.Set(reflect.New(field.Struct.Type.Elem()))
}
fieldValue = fieldValue.Elem()
}
if reflectValue.Type().ConvertibleTo(fieldValue.Type()) {
fieldValue.Set(reflectValue.Convert(fieldValue.Type()))
} else if scanner, ok := fieldValue.Addr().Interface().(sql.Scanner); ok {
err = scanner.Scan(reflectValue.Interface())
} else {
err = fmt.Errorf("could not convert argument of field %s from %s to %s", field.Name, reflectValue.Type(), fieldValue.Type())
}
}
} else {
field.Field.Set(reflect.Zero(field.Field.Type()))
}
field.IsBlank = isBlank(field.Field)
return err
}