allow 0 to remove parent

Author: chriskapp

src/Service/Taxonomy.php

@@ -98,7 +98,12 @@ public function update(string $taxonomyId, TaxonomyUpdate $taxonomy, UserContext
             $this->taxonomyTable->beginTransaction();
 
             // update taxonomy
-            $existing->setParentId($taxonomy->getParentId() ?? $existing->getParentId());
+            $parentId = $taxonomy->getParentId() ?? $existing->getParentId();
+            if ($parentId === 0) {
+                $parentId = null;
+            }
+
+            $existing->setParentId($parentId);
             $existing->setName($taxonomy->getName() ?? $existing->getName());
             $this->taxonomyTable->update($existing);
 

src/Service/Taxonomy/Validator.php

@@ -46,7 +46,7 @@ public function assert(Taxonomy $taxonomy, ?string $tenantId, ?Table\Generated\T
         $this->usageLimiter->assertTaxonomyCount($tenantId);
 
         $parentId = $taxonomy->getParentId();
-        if ($parentId !== null) {
+        if ($parentId !== null && $parentId !== 0) {
             $this->assertParentId($parentId, $tenantId, $existing);
         }