Hi,
When doing relations like this …
echo $book->author->name;
If the relation between book and author no longer exists it results in a trying to get property of a non object error.
What is the best way to handle this. I am aware of doing …
isset($book->author)
But I am wondering if there is a different way which does not have to result in writing isset() etc in large areas of code.
if ($book->author != null) {
...
}
Yes that means I will have to do that check in every place where I have used a relation.
I was wondering if there was more "global" way of handling it?
If this relation coincide with a db constraint, relation must exists.
Otherwise you could use hasMany instead hasOne, that always returns a non-null value. But it is not so convenient.
class Book
{
public function getAuthorName()
{
return $this->author ? $this->author->name : null;
}
}
Law of Demeter
Ok thanks guys.