Merge pull request #3 from Padam87/compound_filters

Compound filters

Author: Padam87

Form/Extension/FilterExtension.php

@@ -27,6 +27,9 @@ public function configureOptions(OptionsResolver $resolver)
 
         $resolver->setDefault('filter_ignore_null', true);
         $resolver->setAllowedTypes('filter_ignore_null', ['bool']);
+
+        $resolver->setDefault('filter_compound', false);
+        $resolver->setAllowedTypes('filter_compound', ['bool']);
     }
 
     /**

Service/Filters.php

@@ -7,9 +7,12 @@
 
 class Filters
 {
-    public function apply(QueryBuilder $qb, FormInterface $filters)
+    public function apply(QueryBuilder $qb, FormInterface $filters, ?string $rootAlias = null)
     {
+        $rootAlias = $rootAlias ?? $qb->getRootAliases()[0];
+
         foreach ($filters->all() as $name => $filter) {
+
             $ignoreNull = $filter->getConfig()->getOption('filter_ignore_null');
 
             if ($ignoreNull && $filter->isEmpty()) {
@@ -22,13 +25,19 @@ public function apply(QueryBuilder $qb, FormInterface $filters)
             $field = $filter->getConfig()->getOption('filter_field');
 
             if (null === $alias) {
-                $alias = $qb->getRootAliases()[0];
+                $alias = $rootAlias;
             }
 
             if (null === $field) {
                 $field = $name;
             }
 
+            if ($filter->getConfig()->getOption('filter_compound')) {
+                $this->apply($qb, $filter, $alias);
+
+                continue;
+            }
+
             if ($callback === false) {
                 continue;
             }