diff --git a/Request/ParamConverter/PropelParamConverter.php b/Request/ParamConverter/PropelParamConverter.php
index c895aa3..e6128ea 100644
--- a/Request/ParamConverter/PropelParamConverter.php
+++ b/Request/ParamConverter/PropelParamConverter.php
@@ -10,27 +10,75 @@ use Symfony\Component\HttpFoundation\Request;
 
 
 /**
- * PropelConverter.
+ * PropelParamConverter
+ *
+ * This convert action parameter to a Propel Object
+ * there is two option for this converter:
+ *
+ * mapping : take an array of routeParam => column
+ * exclude : take an array of routeParam to exclude from the conversion process
+ *
  *
  * @author     Jérémie Augustin <jeremie.augustin@pixel-cookers.com>
  */
 class PropelParamConverter implements ParamConverterInterface
 {
+    /**
+     * the pk column (e.g. id)
+     * @var string
+     */
+    protected $pk;
+
+    /**
+     * list of column/value to use with filterBy
+     * @var array
+     */
+    protected $filters = array();
+
+    /**
+     * list of route parameters to exclude from the conversion process
+     * @var array
+     */
+    protected $exclude = array();
 
     public function apply(Request $request, ConfigurationInterface $configuration)
     {
         $classQuery = $configuration->getClass() . 'Query';
+        $classPeer = $configuration->getClass() . 'Peer';
 
         if (!class_exists($classQuery)) {
             throw new \Exception(sprintf('The %s Query class does not exist', $classQuery));
         }
+
+        $tableMap = $classPeer::getTableMap();
+        $pkColumns = $tableMap->getPrimaryKeyColumns();
+
+        if (count($pkColumns) == 1) {
+            $this->pk = strtolower($pkColumns[0]->getName());
+        }
+
         $options = $configuration->getOptions();
-        $exclude = isset($options['exclude'])? $options['exclude'] : array();
+
+        if (isset($options['mapping'])) {
+            // We use the mapping for calling findPk or filterBy
+            foreach ($options['mapping'] as $routeParam => $column) {
+                if ($request->attributes->has($routeParam)) {
+                    if ($this->pk === $column) {
+                        $this->pk = $routeParam;
+                    } else {
+                        $this->filters[$column] = $request->attributes->get($routeParam);
+                    }
+                }
+            }
+        } else {
+            $this->exclude = isset($options['exclude'])? $options['exclude'] : array();
+            $this->filters = $request->attributes->all();
+        }
 
         // find by Pk
-        if (in_array('id', $exclude) || false === $object = $this->findPk($classQuery, $request)) {
+        if (false === $object = $this->findPk($classQuery, $request)) {
             // find by criteria
-            if (false === $object = $this->findOneBy($classQuery, $request, $exclude)) {
+            if (false === $object = $this->findOneBy($classQuery, $request)) {
                 if ($configuration->isOptional()) {
                     //we find nothing but the object is optional
                     $object = null;
@@ -45,25 +93,27 @@ class PropelParamConverter implements ParamConverterInterface
         }
 
         $request->attributes->set($configuration->getName(), $object);
+
+        return true;
     }
 
     protected function findPk($classQuery, Request $request)
     {
-        if (!$request->attributes->has('id')) {
+        if (in_array($this->pk, $this->exclude) || !$request->attributes->has($this->pk)) {
             return false;
         }
 
-        return $classQuery::create()->findPk($request->attributes->get('id'));
+        return $classQuery::create()->findPk($request->attributes->get($this->pk));
     }
 
-    protected function findOneBy($classQuery, Request $request, $exclude)
+    protected function findOneBy($classQuery, Request $request)
     {
         $query = $classQuery::create();
         $hasCriteria = false;
-        foreach ($request->attributes->all() as $key => $value) {
-            if (!in_array($key, $exclude)) {
+        foreach ($this->filters as $column => $value) {
+            if (!in_array($column, $this->exclude)) {
                 try {
-                    $query->{'filterBy' . PropelInflector::camelize($key)}($value);
+                    $query->{'filterBy' . PropelInflector::camelize($column)}($value);
                     $hasCriteria = true;
                 } catch (\PropelException $e) { }
             }
diff --git a/Resources/doc/param_converter.markdown b/Resources/doc/param_converter.markdown
index 14b92ed..549431f 100644
--- a/Resources/doc/param_converter.markdown
+++ b/Resources/doc/param_converter.markdown
@@ -45,5 +45,23 @@ public function myAction(Post $post)
 }
 ```
 
+#### Custom mapping ####
+
+You can map route parameters directly to model column to be use for filtering.
+
+If you have a route like `/my-route/{postUniqueName}/{AuthorId}`
+Mapping option overwrite any other automatic mapping.
+
+``` php
+<?php
+
+/**
+ * @ParamConverter("post", class="BlogBundle\Model\Post", options={"mapping"={"postUniqueName":"name"}})
+ * @ParamConverter("author", class="BlogBundle\Model\Author", options={"mapping"={"AuthorId":"id"}})
+ */
+public function myAction(Post $post, $author)
+{
+}
+```
 
 [Back to index](index.markdown)
diff --git a/Tests/Request/ParamConverter/PropelParamConverterTest.php b/Tests/Request/ParamConverter/PropelParamConverterTest.php
index 8b82995..34099a3 100644
--- a/Tests/Request/ParamConverter/PropelParamConverterTest.php
+++ b/Tests/Request/ParamConverter/PropelParamConverterTest.php
@@ -152,4 +152,30 @@ class PropelParamConverterTest extends TestCase
         $this->assertNull($request->attributes->get('book'),
                 'param "book" should be null if book is not found and the parameter is optional');
     }
+
+    public function testParamConverterFindWithMapping()
+    {
+        $paramConverter = new PropelParamConverter();
+        $request = new Request(array(), array(), array('toto' => 1, 'book' => null));
+        $configuration = new ParamConverter(array('class' => 'Propel\PropelBundle\Tests\Fixtures\Model\Book',
+                'name' => 'book',
+                'options' => array('mapping' => array('toto' => 'id'))
+                ));
+        $paramConverter->apply($request, $configuration);
+        $this->assertInstanceOf('Propel\PropelBundle\Tests\Fixtures\Model\Book',$request->attributes->get('book'),
+                'param "book" should be an instance of "Propel\PropelBundle\Tests\Fixtures\Model\Book"');
+    }
+
+    public function testParamConverterFindSlugWithMapping()
+    {
+        $paramConverter = new PropelParamConverter();
+        $request = new Request(array(), array(), array('slugParam_special' => 'my-book', 'book' => null));
+        $configuration = new ParamConverter(array('class' => 'Propel\PropelBundle\Tests\Fixtures\Model\Book',
+                'name' => 'book',
+                'options' => array('mapping' => array('slugParam_special' => 'slug'))
+                ));
+        $paramConverter->apply($request, $configuration);
+        $this->assertInstanceOf('Propel\PropelBundle\Tests\Fixtures\Model\Book',$request->attributes->get('book'),
+                'param "book" should be an instance of "Propel\PropelBundle\Tests\Fixtures\Model\Book"');
+    }
 }