Fix task filter issue

app/Model/TaskFilter.php

@@ -56,6 +56,7 @@ class TaskFilter extends Base
     {
         $filter = clone($this);
         $filter->query = clone($this->query);
+        $filter->query->condition = clone($this->query->condition);
         return $filter;
     }
 
@@ -301,7 +302,7 @@ class TaskFilter extends Base
      */
     public function toAutoCompletion()
     {
-        return $this->query->columns('id', 'title')->callback(function(array $results) {
+        return $this->query->columns(Task::TABLE.'.id', Task::TABLE.'.title')->callback(function(array $results) {
 
             foreach ($results as &$result) {
                 $result['value'] = $result['title'];

app/Model/TaskLink.php

@@ -82,7 +82,11 @@ class TaskLink extends Base
                     ->join(Task::TABLE, 'id', 'opposite_task_id')
                     ->join(Board::TABLE, 'id', 'column_id', Task::TABLE)
                     ->join(User::TABLE, 'id', 'owner_id', Task::TABLE)
-                    ->orderBy(Link::TABLE.'.id ASC, '.Board::TABLE.'.position DESC, '.Task::TABLE.'.is_active DESC, '.Task::TABLE.'.position ASC, '.Task::TABLE.'.id', Table::SORT_ASC)
+                    ->asc(Link::TABLE.'.id')
+                    ->desc(Board::TABLE.'.position')
+                    ->desc(Task::TABLE.'.is_active')
+                    ->asc(Task::TABLE.'.position')
+                    ->asc(Task::TABLE.'.id')
                     ->findAll();
     }
 

tests/units/TaskFilterTest.php

@@ -0,0 +1,19 @@
+<?php
+
+require_once __DIR__.'/Base.php';
+
+use Model\TaskFilter;
+
+class TaskFilterTest extends Base
+{
+    public function testCopy()
+    {
+        $tf = new TaskFilter($this->container);
+        $filter1 = $tf->create();
+        $filter2 = $tf->copy();
+
+        $this->assertTrue($filter1 !== $filter2);
+        $this->assertTrue($filter1->query !== $filter2->query);
+        $this->assertTrue($filter1->query->condition !== $filter2->query->condition);
+    }
+}