Make Doctrine_Collection objects use Doctrine::ATTR_COLL_KEY for data array keys

lib/Doctrine/Collection.php

@@ -91,6 +91,10 @@ class Doctrine_Collection extends Doctrine_Access implements Countable, Iterator
             $keyColumn = $table->getBoundQueryPart('indexBy');
         }
 
+        if ($keyColumn === null) {
+        	$keyColumn = $table->getAttribute(Doctrine::ATTR_COLL_KEY);
+        }
+
         if ($keyColumn !== null) {
             $this->keyColumn = $keyColumn;
         }

lib/Doctrine/Configurable.php

@@ -97,8 +97,8 @@ abstract class Doctrine_Configurable extends Doctrine_Locator_Injectable
                 if ( ! ($this instanceof Doctrine_Table)) {
                     throw new Doctrine_Exception("This attribute can only be set at table level.");
                 }
-                if ($value !== null && ! $this->hasColumn($value)) {
-                    throw new Doctrine_Exception("Couldn't set collection key attribute. No such column '$value'");
+                if ($value !== null && ! $this->hasField($value)) {
+                    throw new Doctrine_Exception("Couldn't set collection key attribute. No such field '$value'");
                 }
                 break;
             case Doctrine::ATTR_CACHE: