1: <?php namespace Laravel\Database\Eloquent\Relationships;
 2: 
 3: class Has_One extends Has_One_Or_Many {
 4: 
 5:     /**
 6:      * Get the properly hydrated results for the relationship.
 7:      *
 8:      * @return Model
 9:      */
10:     public function results()
11:     {
12:         return parent::first();
13:     }
14: 
15:     /**
16:      * Initialize a relationship on an array of parent models.
17:      *
18:      * @param  array   $parents
19:      * @param  string  $relationship
20:      * @return void
21:      */
22:     public function initialize(&$parents, $relationship)
23:     {
24:         foreach ($parents as &$parent)
25:         {
26:             $parent->relationships[$relationship] = null;
27:         }
28:     }
29: 
30:     /**
31:      * Match eagerly loaded child models to their parent models.
32:      *
33:      * @param  array  $parents
34:      * @param  array  $children
35:      * @return void
36:      */
37:     public function match($relationship, &$parents, $children)
38:     {
39:         $foreign = $this->foreign_key();
40: 
41:         $dictionary = array();
42: 
43:         foreach ($children as $child)
44:         {
45:             $dictionary[$child->$foreign] = $child;
46:         }
47: 
48:         foreach ($parents as $parent)
49:         {
50:             if (array_key_exists($key = $parent->get_key(), $dictionary))
51:             {
52:                 $parent->relationships[$relationship] = $dictionary[$key];
53:             }
54:         }
55:     }
56: 
57: }