1 files changed, 51 insertions, 0 deletions
diff --git a/www/crm/wp-content/plugins/civicrm/civicrm/ext/api4/Civi/Api4/Action/Entity/GetLinks.php b/www/crm/wp-content/plugins/civicrm/civicrm/ext/api4/Civi/Api4/Action/Entity/GetLinks.php
new file mode 100644
index 00000000..ee274bf9
--- /dev/null
+++ b/www/crm/wp-content/plugins/civicrm/civicrm/ext/api4/Civi/Api4/Action/Entity/GetLinks.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Civi\Api4\Action\Entity;
+
+use \CRM_Core_DAO_AllCoreTables as AllCoreTables;
+
+/**
+ * Get a list of FK links between entities
+ */
+class GetLinks extends \Civi\Api4\Generic\BasicGetAction {
+
+  public function getRecords() {
+    $result = [];
+    /** @var \Civi\Api4\Service\Schema\SchemaMap $schema */
+    $schema = \Civi::container()->get('schema_map');
+    foreach ($schema->getTables() as $table) {
+      $entity = AllCoreTables::getBriefName(AllCoreTables::getClassForTable($table->getName()));
+      // Since this is an api function, exclude tables that don't have an api
+      if (class_exists('\Civi\Api4\\' . $entity)) {
+        $item = [
+          'entity' => $entity,
+          'table' => $table->getName(),
+          'links' => [],
+        ];
+        foreach ($table->getTableLinks() as $link) {
+          $link = $link->toArray();
+          $link['entity'] = AllCoreTables::getBriefName(AllCoreTables::getClassForTable($link['targetTable']));
+          $item['links'][] = $link;
+        }
+        $result[] = $item;
+      }
+    }
+    return $result;
+  }
+
+  public function fields() {
+    return [
+      [
+        'name' => 'entity',
+      ],
+      [
+        'name' => 'table',
+      ],
+      [
+        'name' => 'links',
+        'data_type' => 'Array',
+      ],
+    ];
+  }
+
+}