tweak belongs to eager constraining.

b7ac6674 · Taylor Otwell · f6388e26 · b7ac6674
Commit b7ac6674 authored Apr 17, 2012 by Taylor Otwell
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belongs_to.php laravel/database/eloquent/relationships/belongs_to.php +4 -1

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--- a/laravel/database/eloquent/relationships/belongs_to.php
+++ b/laravel/database/eloquent/relationships/belongs_to.php
@@ -65,7 +65,10 @@ class Belongs_To extends Relationship {
 		// are looking for the parent of a child model in this relationship.
 		foreach ($results as $result)
 		{
-			$keys[] = $result->{$this->foreign_key()};
+			if ( ! is_null($key = $result->{$this->foreign_key()}))
+			{
+				$keys[] = $key;
+			}
 		}

 		$this->table->where_in($this->model->key(), array_unique($keys));