Add delete sequence resource see BT#9893

main/inc/ajax/sequence.ajax.php

@@ -55,16 +55,13 @@ switch ($action) {
             exit;
         }
 
-        $graph = $resource->getGraph();
-
-        if (!empty($graph)) {
-            /** @var Graph $graph */
-            $graph = unserialize($graph);
+        if ($resource->hasGraph()) {
+            $graph = $resource->getUnserializeGraph();
             if ($graph->hasVertex($vertexId)) {
                 $vertex = $graph->getVertex($vertexId);
                 $vertex->destroy();
 
-                $resource->setGraph(serialize($graph));
+                $resource->setGraphAndSerialize($graph);
 
                 $manager->persist($resource);
                 $manager->flush();
@@ -82,32 +79,32 @@ switch ($action) {
             exit;
         }
 
-        $graph = $resource->getGraph();
-
-        if (!empty($graph)) {
-            /** @var Graph $graph */
-            $graph = unserialize($graph);
-
+        if ($resource->hasGraph()) {
+            $graph = $resource->getUnserializeGraph();
             $graphviz = new GraphViz();
             //echo $graphviz->createImageHtml($graph);
 
             /** @var Vertex $mainVertice */
             if ($graph->hasVertex($id)) {
-                $mainVertice = $graph->getVertex($id);
+                $mainVertex = $graph->getVertex($id);
 
-                if (!empty($mainVertice)) {
-                    $list = [];
+                if (!empty($mainVertex)) {
+                    $vertexList = null;
                     switch ($loadResourceType) {
                         case 'parent':
-                            $verticeList = $mainVertice->getVerticesEdgeFrom();
+                            $vertexList = $mainVertex->getVerticesEdgeFrom();
 
                             break;
                         case 'children':
-                            $verticeList = $mainVertice->getVerticesEdgeTo();
+                            $vertexList = $mainVertex->getVerticesEdgeTo();
                             break;
                     }
-                    foreach ($verticeList as $vertice) {
-                        $list[] = $vertice->getId();
+
+                    $list = [];
+                    if (!empty($vertexList)) {
+                        foreach ($vertexList as $vertex) {
+                            $list[] = $vertex->getId();
+                        }
                     }
 
                     if (!empty($list)) {
@@ -141,16 +138,14 @@ switch ($action) {
                     /** @var SequenceResource $resource */
                     $resource = $repository->findOneByResourceId($parentId);
                     if ($resource) {
-                        $parentGraph = $resource->getGraph();
-
-                        if (!empty($parentGraph)) {
+                        if ($resource->hasGraph()) {
                             /** @var Graph $parentGraph */
-                            $parentGraph = unserialize($parentGraph);
+                            $parentGraph = $resource->getUnserializeGraph();
                             try {
                                 $vertex = $parentGraph->getVertex($parentId);
                                 $parentMain = $parentGraph->createVertex($id);
                                 $vertex->createEdgeTo($parentMain);
-                                $resource->setGraph(serialize($parentGraph));
+                                $resource->setGraphAndSerialize($parentGraph);
 
                                 $manager->persist($resource);
                                 $manager->flush();
@@ -174,11 +169,11 @@ switch ($action) {
                 if (empty($sequence)) {
                     $sequence = new SequenceResource();
                     $sequence
-                        ->setGraph(serialize($graph))
+                        ->setGraphAndSerialize($graph)
                         ->setType(SequenceResource::SESSION_TYPE)
                         ->setResourceId($id);
                 } else {
-                    $sequence->setGraph(serialize($graph));
+                    $sequence->setGraphAndSerialize($graph);
                 }
                 $manager->persist($sequence);
                 $manager->flush();

main/inc/lib/SequenceManager.php

@@ -493,7 +493,7 @@ class SequenceManager
         }
         $user_id = intval($user_id);
         $session_id = intval($session_id);
-        $row_entity_id = intval($row_entity_id));
+        $row_entity_id = intval($row_entity_id);
         $seq_table = Database::get_main_table(TABLE_MAIN_SEQUENCE);
         $val_table = Database::get_main_table(TABLE_SEQUENCE_VALUE);
         $sql = "SELECT DISTINCT seq.sequence_row_entity_id, val.user_id
@@ -589,7 +589,7 @@ class SequenceManager
         }
         $row_id = intval($row_id);
         $entity_id = intval($entity_id);
-        $c_id = intval($c_id));
+        $c_id = intval($c_id);
 
         $row_entity_id_prev = self::get_row_entity_id_by_row_id($entity_id, $row_id, $c_id);
 
@@ -948,7 +948,7 @@ class SequenceManager
         if (self::_debug) {
             error_log('Entering '.__FUNCTION__.' in '.__FILE__);
         }
-        $user_id = intval($user_id));
+        $user_id = intval($user_id);
         $session_id = intval($session_id);
         $total_items = intval($total_items);
         $available = intval($available);
@@ -1251,7 +1251,7 @@ class SequenceManager
         }
         $row_entity_id = intval($row_entity_id);
         $user_id = intval($user_id);
-        $session_id = intval($session_id));
+        $session_id = intval($session_id);
 
         $val_table = Database::get_main_table(TABLE_SEQUENCE_VALUE);
 

main/inc/lib/sessionmanager.lib.php

@@ -1480,7 +1480,9 @@ class SessionManager
         $userId = api_get_user_id();
 
         if (is_array($id_checked)) {
-            $id_checked = Database::escape_string(implode(',', $id_checked));
+            foreach ($id_checked as $sessionId) {
+                self::delete($sessionId);
+            }
         } else {
             $id_checked = intval($id_checked);
         }
@@ -1503,6 +1505,13 @@ class SessionManager
         $extraFieldValue = new ExtraFieldValue('session');
         $extraFieldValue->deleteValuesByItem($id_checked);
 
+        /** @var \Chamilo\CoreBundle\Entity\Repository\SequenceRepository $repo */
+        $repo = Database::getManager()->getRepository('ChamiloCoreBundle:SequenceResource');
+        $repo->deleteResource(
+            $id_checked,
+            \Chamilo\CoreBundle\Entity\SequenceResource::SESSION_TYPE
+        );
+
         // Add event to system log
         Event::addEvent(
             LOG_SESSION_DELETE,

main/session/resume_session.php

@@ -6,6 +6,9 @@
 *	@package chamilo.admin
 */
 
+use Chamilo\CoreBundle\Entity\Repository\SequenceRepository;
+use Chamilo\CoreBundle\Entity\SequenceResource;
+
 $cidReset = true;
 require_once '../inc/global.inc.php';
 
@@ -491,4 +494,40 @@ if (!empty($userList)) {
     $table->display();
 }
 
+// @todo put this in a function
+/** @var SequenceRepository $repo */
+$repo = Database::getManager()->getRepository('ChamiloCoreBundle:SequenceResource');
+$sequence = $repo->findRequirementForResource($sessionId, SequenceResource::SESSION_TYPE);
+
+if ($sequence->hasGraph()) {
+    $graph = $sequence->getUnserializeGraph();
+    $vertex = $graph->getVertex($sessionId);
+    $from = $vertex->getVerticesEdgeFrom();
+
+    $sessionNameList = [];
+    foreach ($from as $subVertex) {
+        $vertexId = $subVertex->getId();
+        $sessionInfo = api_get_session_info($vertexId);
+        $sessionNameList[] = $sessionInfo['name'];
+    }
+
+    if (!empty($sessionNameList)) {
+        echo Display::page_subheader(get_lang('Requirements'));
+        echo implode(',', $sessionNameList);
+    }
+
+    $to = $vertex->getVerticesEdgeTo();
+    $sessionNameList = [];
+    foreach ($to as $subVertex) {
+        $vertexId = $subVertex->getId();
+        $sessionInfo = api_get_session_info($vertexId);
+        $sessionNameList[] = $sessionInfo['name'];
+    }
+
+    if (!empty($sessionNameList)) {
+        echo Display::page_subheader(get_lang('Dependencies'));
+        echo implode(',', $sessionNameList);
+    }
+}
+
 Display :: display_footer();

src/Chamilo/CoreBundle/Entity/Manager/SequenceResourceManager.php

@@ -6,12 +6,12 @@ namespace Chamilo\CoreBundle\Entity\Manager;
 use Sonata\CoreBundle\Model\BaseEntityManager;
 
 /**
- * Class SequenceManager
+ * Class SequenceResourceManager
  * CRUD for the course
  *
  * @package Chamilo\CoreBundle\Entity\Repository
  */
-class SequenceManager extends BaseEntityManager
+class SequenceResourceManager extends BaseEntityManager
 {
 
 }

src/Chamilo/CoreBundle/Entity/Repository/SequenceRepository.php

@@ -3,16 +3,69 @@
 
 namespace Chamilo\CoreBundle\Entity\Repository;
 
+use Chamilo\CoreBundle\Entity\SequenceResource;
 use Doctrine\ORM\EntityRepository;
+use Fhaculty\Graph\Vertex;
 
 /**
  * Class SequenceRepository
- * The functions inside this class must return an instance of QueryBuilder
+ * The functions inside this class should return an instance of QueryBuilder
  *
  * @package Chamilo\CoreBundle\Entity\Repository
  */
 class SequenceRepository extends EntityRepository
 {
+    /**
+     * Find the SequenceResource based in the resourceId and type
+     * @param int $resourceId
+     * @param int $type
+     *
+     * @return SequenceResource
+     */
+    public function findRequirementForResource($resourceId, $type)
+    {
+  /*      $criteria = Criteria::create()
+            ->where(Criteria::expr()->eq("resourceId", $resourceId))
+            ->andWhere(Criteria::expr()->eq("type", $type));
+*/
+        return $this->findOneBy(['resourceId' => $resourceId, 'type' => $type]);
+    }
+
+    /**
+     * Deletes a node and check in all the dependencies if the node exists in
+     * order to deleted.
+     *
+     * @param int $resourceId
+     * @param int $type
+     */
+    public function deleteResource($resourceId, $type)
+    {
+        $sequence = $this->findRequirementForResource($resourceId, $type);
+
+        if ($sequence && $sequence->hasGraph()) {
+            $em = $this->getEntityManager();
+            $graph = $sequence->getUnserializeGraph();
 
+            $mainVertex = $graph->getVertex($resourceId);
+            $vertices = $graph->getVertices();
+
+            /** @var Vertex $vertex */
+            foreach ($vertices as $vertex) {
+                $subResourceId = $vertex->getId();
+                $subSequence = $this->findRequirementForResource($subResourceId, $type);
+                if ($sequence && $subSequence->hasGraph()) {
+                    $graph = $subSequence->getUnserializeGraph();
+                    $subMainVertex = $graph->getVertex($resourceId);
+                    $subMainVertex->destroy();
+                    $subSequence->setGraphAndSerialize($graph);
+                    $em->persist($subSequence);
+                }
+            }
+            $mainVertex->destroy();
+
+            $em->remove($sequence);
+            $em->flush();
+        }
+    }
 
 }

src/Chamilo/CoreBundle/Entity/SequenceResource.php

@@ -4,12 +4,13 @@
 namespace Chamilo\CoreBundle\Entity;
 
 use Doctrine\ORM\Mapping as ORM;
+use Fhaculty\Graph\Graph;
 
 /**
  * Class SequenceResource
+ *
  * @ORM\Entity(repositoryClass="Chamilo\CoreBundle\Entity\Repository\SequenceRepository")
  * @ORM\Table(name="sequence_resource")
- * @ORM\Entity
  */
 class SequenceResource
 {
@@ -84,6 +85,22 @@ class SequenceResource
         return $this->graph;
     }
 
+    /**
+     * @return Graph
+     */
+    public function getUnserializeGraph()
+    {
+        return unserialize($this->graph);
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasGraph()
+    {
+        return !empty($this->graph) ? true : false;
+    }
+
     /**
      * @param string $graph
      *
@@ -96,6 +113,18 @@ class SequenceResource
         return $this;
     }
 
+    /**
+     * @param string $graph
+     *
+     * @return SequenceResource
+     */
+    public function setGraphAndSerialize($graph)
+    {
+        $this->setGraph(serialize($graph));
+
+        return $this;
+    }
+
     /**
      * @return int
      */
@@ -106,6 +135,8 @@ class SequenceResource
 
     /**
      * @param int $resourceId
+     *
+     * @return $this
      */
     public function setResourceId($resourceId)
     {
@@ -113,5 +144,4 @@ class SequenceResource
 
         return $this;
     }
-
 }