Added an export function to attachment_types admin pages.

src/Entity/AttachmentType.php

@@ -77,7 +77,6 @@ class AttachmentType extends StructuralDBElement
      */
     public function getIDString(): string
     {
-        return '';
-        //return 'AT' . sprintf('%09d', $this->getID());
+        return 'AT' . sprintf('%09d', $this->getID());
     }
 }

src/Entity/DBElement.php

@@ -24,6 +24,8 @@ declare(strict_types=1);
 namespace App\Entity;
 
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
+use Symfony\Component\Serializer\Annotation\Groups;
 
 /**
  * This class is for managing all database objects.
@@ -36,6 +38,23 @@ use Doctrine\ORM\Mapping as ORM;
  * @ORM\MappedSuperclass()
  *
  * @ORM\EntityListeners({"App\Security\EntityListeners\ElementPermissionListener"})
+ *
+ * @DiscriminatorMap(typeProperty="type", mapping={
+ *      "attachment_type" = "App\Entity\AttachmentType",
+ *      "attachment" = "App\Entity\Attachment",
+ *      "category" = "App\Entity\Attachment",
+ *      "device" = "App\Entity\Device",
+ *      "device_part" = "App\Entity\DevicePart",
+ *      "footprint" = "App\Entity\Footprint",
+ *      "group" = "App\Entity\Group",
+ *      "manufacturer" = "App\Entity\Manufacturer",
+ *      "orderdetail" = "App\Entity\Orderdetail",
+ *      "part" = "App\Entity\Part",
+ *      "pricedetail" = "App\Entity\Pricedetail",
+ *      "storelocation" = "App\Entity\Storelocation",
+ *      "supplier" = "App\Entity\Supplier",
+ *      "user" = "App\Entity\User"
+ *  })
  */
 abstract class DBElement
 {
@@ -43,6 +62,7 @@ abstract class DBElement
      * @ORM\Column(type="integer")
      * @ORM\Id()
      * @ORM\GeneratedValue()
+     * @Groups({"full"})
      */
     protected $id;
 
@@ -64,6 +84,7 @@ abstract class DBElement
      * This should have a form like P000014, for a part with ID 14.
      *
      * @return string The ID as a string;
+     *
      */
     abstract public function getIDString(): string;
 

src/Entity/NamedDBElement.php

@@ -25,6 +25,7 @@ namespace App\Entity;
 
 use Doctrine\ORM\Mapping as ORM;
 use Symfony\Component\Validator\Constraints as Assert;
+use Symfony\Component\Serializer\Annotation\Groups;
 
 /**
  * All subclasses of this class have an attribute "name".
@@ -38,18 +39,21 @@ abstract class NamedDBElement extends DBElement
      * @var string The name of this element.
      * @ORM\Column(type="string")
      * @Assert\NotBlank()
+     * @Groups({"simple", "extended", "full"})
      */
     protected $name = '';
 
     /**
      * @var \DateTime The date when this element was modified the last time.
      * @ORM\Column(type="datetimetz", name="last_modified")
+     * @Groups({"extended", "full"})
      */
     protected $lastModified;
 
     /**
      * @var \DateTime The date when this element was created.
      * @ORM\Column(type="datetimetz", name="datetime_added")
+     * @Groups({"extended", "full"})
      */
     protected $addedDate;
 

src/Entity/StructuralDBElement.php

@@ -27,6 +27,8 @@ use Doctrine\ORM\Mapping as ORM;
 use Doctrine\ORM\PersistentCollection;
 use App\Validator\Constraints\NoneOfItsChildren;
 use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
+use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
+use Symfony\Component\Serializer\Annotation\Groups;
 
 /**
  * All elements with the fields "id", "name" and "parent_id" (at least).
@@ -52,17 +54,20 @@ abstract class StructuralDBElement extends AttachmentContainingDBElement
     // subclasses
     /**
      * @var StructuralDBElement[]
+     * @Groups({"include_children"})
      */
     protected $children;
     /**
      * @var StructuralDBElement
      * @NoneOfItsChildren()
+     * @Groups({"include_parents"})
      */
     protected $parent;
 
     /**
      * @var string The comment info for this element
      * @ORM\Column(type="string", nullable=true)
+     * @Groups({"simple", "extended", "full"})
      */
     protected $comment;
 
@@ -78,7 +83,9 @@ abstract class StructuralDBElement extends AttachmentContainingDBElement
     protected $level = 0;
 
     /** @var string[] all names of all parent elements as a array of strings,
-     *  the last array element is the name of the element itself */
+     *  the last array element is the name of the element itself
+     *
+     */
     private $full_path_strings;
 
     /******************************************************************************
@@ -154,24 +161,25 @@ abstract class StructuralDBElement extends AttachmentContainingDBElement
     /**
      * Get the level.
      *
-     *     The level of the root node is -1.
+     * The level of the root node is -1.
      *
      * @return int the level of this element (zero means a most top element
      *             [a subelement of the root node])
+     *
      */
     public function getLevel(): int
     {
-        if (0 === $this->level) {
+        /**
+         * Only check for nodes that have a parent. In the other cases zero is correct.
+         */
+        if (0 === $this->level && $this->parent !== null) {
             $element = $this->parent;
-            $parent_id = $element->getParentID();
-            while ($parent_id > 0) {
+            while ($element !== null) {
                 /** @var StructuralDBElement $element */
                 $element = $element->parent;
-                $parent_id = $element->getParentID();
                 ++$this->level;
             }
         }
-
         return $this->level;
     }
 
@@ -181,6 +189,7 @@ abstract class StructuralDBElement extends AttachmentContainingDBElement
      * @param string $delimeter the delimeter of the returned string
      *
      * @return string the full path (incl. the name of this element), delimeted by $delimeter
+     *
      */
     public function getFullPath(string $delimeter = self::PATH_DELIMITER_ARROW): string
     {
@@ -216,6 +225,11 @@ abstract class StructuralDBElement extends AttachmentContainingDBElement
         return $this->children;
     }
 
+    public function getChildren(): PersistentCollection
+    {
+        return $this->children;
+    }
+
     /******************************************************************************
      *
      * Setters