1 files changed, 74 insertions, 0 deletions
diff --git a/app/Filter/TaskTagFilter.php b/app/Filter/TaskTagFilter.php
new file mode 100644
index 00000000..01b6f625
--- /dev/null
+++ b/app/Filter/TaskTagFilter.php
@@ -0,0 +1,74 @@
+<?php
+
+namespace Kanboard\Filter;
+
+use Kanboard\Core\Filter\FilterInterface;
+use Kanboard\Model\TagModel;
+use Kanboard\Model\TaskModel;
+use Kanboard\Model\TaskTagModel;
+use PicoDb\Database;
+
+/**
+ * Class TaskTagFilter
+ *
+ * @package Kanboard\Filter
+ * @author  Frederic Guillot
+ */
+class TaskTagFilter extends BaseFilter implements FilterInterface
+{
+    /**
+     * Database object
+     *
+     * @access private
+     * @var Database
+     */
+    private $db;
+
+    /**
+     * Get search attribute
+     *
+     * @access public
+     * @return string[]
+     */
+    public function getAttributes()
+    {
+        return array('tag');
+    }
+
+    /**
+     * Set database object
+     *
+     * @access public
+     * @param  Database $db
+     * @return $this
+     */
+    public function setDatabase(Database $db)
+    {
+        $this->db = $db;
+        return $this;
+    }
+
+    /**
+     * Apply filter
+     *
+     * @access public
+     * @return FilterInterface
+     */
+    public function apply()
+    {
+        $task_ids = $this->db
+            ->table(TagModel::TABLE)
+            ->ilike(TagModel::TABLE.'.name', $this->value)
+            ->asc(TagModel::TABLE.'.project_id')
+            ->join(TaskTagModel::TABLE, 'tag_id', 'id')
+            ->findAllByColumn(TaskTagModel::TABLE.'.task_id');
+
+        if (empty($task_ids)) {
+            $task_ids = array(-1);
+        }
+
+        $this->query->in(TaskModel::TABLE.'.id', $task_ids);
+
+        return $this;
+    }
+}