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disallow aliases to other aliases

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This commit is contained in:
Shish 2013-03-03 18:32:56 +00:00
parent d5bc06835d
commit e013d86b56
1 changed files with 3 additions and 0 deletions
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3
ext/alias_editor/main.php
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@ -108,6 +108,9 @@ class AliasEditor extends Extension {
if($database->get_row("SELECT * FROM aliases WHERE oldtag=:oldtag AND lower(newtag)=lower(:newtag)", $pair)) {
throw new AddAliasException("That alias already exists");
}
else if($database->get_row("SELECT * FROM aliases WHERE oldtag=:newtag", $pair)) {
throw new AddAliasException("{$event->newtag} is itself an alias");
}
else {
$database->execute("INSERT INTO aliases(oldtag, newtag) VALUES(:oldtag, :newtag)", $pair);
log_info("alias_editor", "Added alias for {$event->oldtag} -> {$event->newtag}", true);