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@@ -2112,7 +2112,7 @@ class SessionManager
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if ($nb_affected > 0) {
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if ($nb_affected > 0) {
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// Update number of courses in the session
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// Update number of courses in the session
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- $sql = "UPDATE $tbl_session SET nbr_courses= nbr_courses + $nb_affected WHERE id='$session_id' ";
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+ $sql = "UPDATE $tbl_session SET nbr_courses= nbr_courses - $nb_affected WHERE id='$session_id' ";
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Database::query($sql);
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Database::query($sql);
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return true;
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return true;
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} else {
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} else {
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