Apply column restrictions to the board

app/Decorator/ColumnMoveRestrictionCacheDecorator.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Kanboard\Decorator;
+
+use Kanboard\Core\Cache\CacheInterface;
+use Kanboard\Model\ColumnMoveRestrictionModel;
+
+/**
+ * Class ColumnMoveRestrictionCacheDecorator
+ *
+ * @package Kanboard\Decorator
+ * @author  Frederic Guillot
+ */
+class ColumnMoveRestrictionCacheDecorator
+{
+    protected $cachePrefix = 'column_move_restriction:';
+
+    /**
+     * @var CacheInterface
+     */
+    protected $cache;
+
+    /**
+     * @var ColumnMoveRestrictionModel
+     */
+    protected $columnMoveRestrictionModel;
+
+    /**
+     * ColumnMoveRestrictionDecorator constructor.
+     *
+     * @param CacheInterface             $cache
+     * @param ColumnMoveRestrictionModel $columnMoveRestrictionModel
+     */
+    public function __construct(CacheInterface $cache, ColumnMoveRestrictionModel $columnMoveRestrictionModel)
+    {
+        $this->cache = $cache;
+        $this->columnMoveRestrictionModel = $columnMoveRestrictionModel;
+    }
+
+    /**
+     * Proxy method to get column Ids
+     * @param  int $project_id
+     * @return array|mixed
+     */
+    public function getAllSrcColumns($project_id)
+    {
+        $key = $this->cachePrefix.$project_id;
+        $columnIds = $this->cache->get($key);
+
+        if ($columnIds === null) {
+            $columnIds = $this->columnMoveRestrictionModel->getAllSrcColumns($project_id);
+            $this->cache->set($key, $columnIds);
+        }
+
+        return $columnIds;
+    }
+}