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-rw-r--r--lib/models/OERMaterial.php3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/models/OERMaterial.php b/lib/models/OERMaterial.php
index 224c860..2048457 100644
--- a/lib/models/OERMaterial.php
+++ b/lib/models/OERMaterial.php
@@ -257,6 +257,9 @@ class OERMaterial extends SimpleORMap
public function setTopics($tags)
{
+ $tags = array_map('trim', $tags);
+ $tags = array_filter($tags);
+
$statement = DBManager::get()->prepare("
DELETE FROM oer_tags_material
WHERE material_id = :material_id