// ByCode returns an custattr.Attributer by code. Use type assertion.
func (s AttributeSlice) ByCode(g eav.AttributeGetter, code string) (interface{}, error) {
if g == nil {
panic("AttributeGetter is nil")
}
i, err := g.ByCode(code)
if err != nil {
return nil, errgo.Mask(err)
}
return s[i], nil
}
// ByID returns an custattr.Attributer by int64 id. Use type assertion.
func (s AttributeSlice) ByID(g eav.AttributeGetter, id int64) (interface{}, error) {
if g == nil {
panic("AttributeGetter is nil")
}
i, err := g.ByID(id)
if err != nil {
return nil, errgo.Mask(err)
}
return s[i], nil
}