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Is there a way to alter a URL alias without using a module? Somebody told me to write a record into database table, but I don't know how to do it.

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    That sounds like a terrible idea. – tim.plunkett Mar 30 '11 at 5:01
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Drupal allows to add (and alter) a path alias using the user interface. Generally, there is no reason to alter a database table directly, especially when a Drupal core module allows to do what you are trying to achieve through an administrative page.

If you need to do it from code, then you can use path_set_alias() function as pointed out from tim.plunkett. Differently, Drupal user interface is preferable for such tasks.

The query used by path_set_alias() to update an existing alias is similar to the following (I simplified the query by removing the reference to the language field):

UPDATE {url_alias} SET src = '<alias>', dst = '<destination>' WHERE dst = '<old_destination>'

If your Drupal site is using table prefixes (e.g. dr6_) then you need to replace {url_alias} with dr6_url_alias; if your Drupal site is not using table prefixes, then replace {url_alias} with url_alias.
Replace also <alias> in the query I wrote with the path alias, <destination> with the path to alias, and <old_destination> with the old path (which can also be the same value used for <destination>).

If there isn't a path alias, then the query becomes the following one:

INSERT INTO {url_alias} (src, dst) VALUES ('<alias>', '<destination>')

<alias> and <destination> have the same meaning I reported before.

  • What is the purpose of reposting my exact answer? – tim.plunkett Mar 30 '11 at 5:42
  • i put this code in preprocess_page function, if (isset($node->path) && $node->type=='story') { path_set_alias('node/' . $node->nid, $node->path.'/test', NULL, $language); } but it doesn't work. – enjoylife Mar 30 '11 at 5:44
  • @tim.plunkett: You didn't suggest to do it through the user interface, as far as I can see. – kiamlaluno Mar 30 '11 at 5:52
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    @enjoylife: I would not suggest to alter a path alias inside hook_preprocess_page(). Is there any reason you cannot change the path alias from the user interface? Your question was asking about doing it without using a module, but from your comment I get you are using a module (whenever it is your custom module or a third-party module, it is still a module). – kiamlaluno Mar 30 '11 at 5:56
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Inserting values directly into the database is a poor choice when there is an API available. The function you are looking for is path_set_alias().

If you absolutely insist on inserting rows directly into the database, the table is {url_alias}.

  • i put this code in preprocess_page function, if (isset($node->path) && $node->type=='story') { path_set_alias('node/' . $node->nid, $node->path.'/test', NULL, $language); } but it doesn't work. if i inserting rows directly into the database,how and where to write and put the code in. – enjoylife Mar 30 '11 at 5:46
  • You would only set an alias once, not on every page load. Hence, you would need to write a module. If you don't want to use a module, then go into your database directly and add another row. If you want generic paths, use Pathauto. – tim.plunkett Mar 30 '11 at 5:51
  • if i want to add the test after the node story content type. how to alter the database? – enjoylife Mar 30 '11 at 6:03

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