Fs02/grimoire

package changeset

import (
    "reflect"
    "strings"
)

// PutAssocErrorMessage is the default error message for PutAssoc.
var PutAssocErrorMessage = "{field} is invalid"

// PutAssoc to changeset.
func PutAssoc(ch *Changeset, field string, value interface{}, opts ...Option) {
    options := Options{
        message: PutAssocErrorMessage,
    }
    options.apply(opts)
    if typ, exist := ch.types[field]; exist {
        if typ.Kind() == reflect.Struct {
            valTyp := reflect.TypeOf(value)
            if valTyp == reflect.TypeOf(ch) {
                ch.changes[field] = value
                return
            }
        } else if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Struct {
            valTyp := reflect.TypeOf(value)
            if valTyp.Kind() == reflect.Slice && valTyp.Elem().ConvertibleTo(reflect.TypeOf(ch)) {
                ch.changes[field] = value
                return
            }
        }
    }
    msg := strings.Replace(options.message, "{field}", field, 1)
    AddError(ch, field, msg)
}