Method err

gui/builder.go:1108–1132

err creates and returns an error for the current object, field name and with the specified message

(am map[string]interface{}, fname, msg string)

// err creates and returns an error for the current object, field name and with the specified message
func (b *Builder) err(am map[string]interface{}, fname, msg string) error {

	// Get path of objects till the error
	names := []string{}
	var name string
	for {
		if v := am[AttribName]; v != nil {
			name = v.(string)
		} else {
			name = "?"
		}
		names = append(names, name)
		var par interface{}
		if par = am[AttribParentInternal]; par == nil {
			break
		}
		am = par.(map[string]interface{})
	}
	path := []string{}
	for i := len(names) - 1; i >= 0; i-- {
		path = append(path, names[i])
	}

	return fmt.Errorf("Error in object:%s field:%s -> %s", strings.Join(path, "/"), fname, msg)
}

// debugPrint prints the internal attribute map of the builder for debugging.
// This map cannot be printed by fmt.Printf() because it has cycles.