forked from ebhomengo/niki
104 lines
1.7 KiB
Go
104 lines
1.7 KiB
Go
package validation
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
)
|
|
|
|
// ErrMultipleOfInvalid is the error that returns when a value is not multiple of a base.
|
|
|
|
var ErrMultipleOfInvalid = NewError("validation_multiple_of_invalid", "must be multiple of {{.base}}")
|
|
|
|
// MultipleOf returns a validation rule that checks if a value is a multiple of the "base" value.
|
|
|
|
// Note that "base" should be of integer type.
|
|
|
|
func MultipleOf(base interface{}) MultipleOfRule {
|
|
|
|
return MultipleOfRule{
|
|
|
|
base: base,
|
|
|
|
err: ErrMultipleOfInvalid,
|
|
}
|
|
|
|
}
|
|
|
|
// MultipleOfRule is a validation rule that checks if a value is a multiple of the "base" value.
|
|
|
|
type MultipleOfRule struct {
|
|
base interface{}
|
|
|
|
err Error
|
|
}
|
|
|
|
// Error sets the error message for the rule.
|
|
|
|
func (r MultipleOfRule) Error(message string) MultipleOfRule {
|
|
|
|
r.err = r.err.SetMessage(message)
|
|
|
|
return r
|
|
|
|
}
|
|
|
|
// ErrorObject sets the error struct for the rule.
|
|
|
|
func (r MultipleOfRule) ErrorObject(err Error) MultipleOfRule {
|
|
|
|
r.err = err
|
|
|
|
return r
|
|
|
|
}
|
|
|
|
// Validate checks if the value is a multiple of the "base" value.
|
|
|
|
func (r MultipleOfRule) Validate(value interface{}) error {
|
|
|
|
rv := reflect.ValueOf(r.base)
|
|
|
|
switch rv.Kind() {
|
|
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
|
|
|
v, err := ToInt(value)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if v%rv.Int() == 0 {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
|
|
|
v, err := ToUint(value)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if v%rv.Uint() == 0 {
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
return fmt.Errorf("type not supported: %v", rv.Type())
|
|
|
|
}
|
|
|
|
return r.err.SetParams(map[string]interface{}{"base": r.base})
|
|
|
|
}
|