Increase Drupal Maximum URL Alias Length

Submitted by tomo on October 10, 2012 - 12:47am

Drupal URLs can be pretty long. But practically, there's a limit in the database of 128 characters, even though browsers and web servers can support much longer URLs. With new versions of Path Auto, the schema is checked for alias column size. Then aliases longer than 128 characters are supported. This requires no hacking!

To change this, without just manually altering the length of the column in your database, you can use the following code in your own module:

/**
* Implementation of hook_schema_alter().
*/
function yourmodulename_schema_alter(&$schema) {
  $schema['url_alias']['fields']['dst']['length'] = 255;
}

Long URLs aren't very human friendly but even the oldest browsers can support URLs more than 2048 characters in length. Browsers support long paths, web servers support them, proxies support them, and mail clients either support them or break around 80 characters anyways. This doesn't mean you should carelessly throw around long URLs, but if you're generating them automatically then you don't need to cut them at an artificially low limit anymore.

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About the author

Asian-American expat living in Vietnam over 3 years. I am involved in tech startups and do Drupal consulting. I choose to live in Saigon and Vietnam and I want to see the city and its people reach their true potential.

Where is Saigon?

It's not wrong to wonder where in the world Saigon is.

Saigon is the name of the city now officially known as Ho Chi Minh City. But most people who call Saigon home call their home Saigon and it's mostly tourists who I hear refer to it as Ho Chi Minh City (or Ho Chi Minh Ville for the French).

After the Vietnam/American War ended in 1975, many place names ceased to exist such as Saigon, South Vietnam, and plenty of street names.

Tu Do is now Dong Khoi, Thong Nhat is Le Duan. And Tan Son Nhut Airport is now Tan Son Nhat International Airport. Rue Paul Blanchy has been Hai Ba Trung since the 1950s.

Those who haven't seen Vietnam for decades will be confused not just by the geographical changes but the incredible amount of development and modernization that has since taken place.

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I also post a lot of technical material unrelated to Vietnam that doesn't hit the home page. Starting from November 2015 I am only posting technical articles on my new sub-blog: TECH.saigonist.com

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