/
errors.go
84 lines (70 loc) · 1.93 KB
/
errors.go
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package validation
import (
"errors"
"fmt"
)
type ValidationError struct {
Err string
Fields map[string]string
}
func (ve ValidationError) Error() string {
return ve.Err
}
func IsValidationError(e error) bool {
var ve ValidationError
return errors.As(e, &ve)
}
// FieldValidationError is a validation error for a single field.
type FieldValidationError struct {
Field string
Err string
}
// Error implements the Error interface.
func (ve FieldValidationError) Error() string {
return ve.Err
}
// ValidationErrors is a collection of validation errors.
type ValidationErrors []FieldValidationError
// ToMap returns a map with the error string for each field.
func (ve ValidationErrors) ToMap() map[string]string {
m := make(map[string]string, len(ve))
for _, err := range ve {
m[err.Field] = err.Error()
}
return m
}
//
func (ve ValidationErrors) ToValidationError() ValidationError {
return ValidationError{Err: "data validation error", Fields: ve.ToMap()}
}
// Error implements the Error interface.
func (ve ValidationErrors) Error() string {
m := ve.ToMap()
return fmt.Sprintf("%+v", m)
}
// IsValidationErrors returns true if the provided error is
// a ValidationsErrors
func IsValidationErrors(err error) bool {
var ve ValidationErrors
return errors.As(err, &ve)
}
// IsFieldValidationError returns true if the provided error is
// a ValidationsErrors or ValidationError.
func IsFieldValidationError(err error) bool {
var ve FieldValidationError
return errors.As(err, &ve)
}
// IsAnyValidationError returns true if the provided error is
// a ValidationsErrors or ValidationError.
func IsAnyValidationError(err error) bool {
return IsValidationErrors(err) || IsFieldValidationError(err) || IsValidationError(err)
}
// GetValidationErrors returns the error as ValidationErrors
// if having that type.
func GetValidationErrors(err error) ValidationErrors {
var ve ValidationErrors
if !errors.As(err, &ve) {
return nil
}
return ve
}