Improve base FileModel class

app/Model/TaskFileModel.php

@@ -11,26 +11,12 @@ namespace Kanboard\Model;
 class TaskFileModel extends FileModel
 {
     /**
-     * SQL table name
+     * Table name
      *
      * @var string
      */
     const TABLE = 'task_has_files';
 
-    /**
-     * SQL foreign key
-     *
-     * @var string
-     */
-    const FOREIGN_KEY = 'task_id';
-
-    /**
-     * Path prefix
-     *
-     * @var string
-     */
-    const PATH_PREFIX = 'tasks';
-
     /**
      * Events
      *
@@ -38,6 +24,54 @@ class TaskFileModel extends FileModel
      */
     const EVENT_CREATE = 'task.file.create';
 
+    /**
+     * Get the table
+     *
+     * @abstract
+     * @access protected
+     * @return string
+     */
+    protected function getTable()
+    {
+        return self::TABLE;
+    }
+
+    /**
+     * Define the foreign key
+     *
+     * @abstract
+     * @access protected
+     * @return string
+     */
+    protected function getForeignKey()
+    {
+        return 'task_id';
+    }
+
+    /**
+     * Define the path prefix
+     *
+     * @abstract
+     * @access protected
+     * @return string
+     */
+    protected function getPathPrefix()
+    {
+        return 'tasks';
+    }
+
+    /**
+     * Get event name
+     *
+     * @abstract
+     * @access protected
+     * @return string
+     */
+    protected function getEventName()
+    {
+        return self::EVENT_CREATE;
+    }
+
     /**
      * Handle screenshot upload
      *