Increase maximum alias length to 1024 characters [#2858096]

Does the limit of 255 still apply in drupal 8?

The maximum alias length and maximum component length values default to 100 and have a limit of 255 from Pathauto. You should enter a value that is the length of the "alias" column of the url_alias database table minus the length of any strings that might get added to the end of the URL. The recommended and default value is 100.

Comment	File	Size	Author
#12	pathauto-increase_alias_length_1024_char-2858096-12.patch	1.95 KB	johnlutz
#12
#3	pathauto-increase_alias_length_1024_char-2858096-3.patch	3.06 KB	rp7
#3	8.x-1.x: PHP 5.5 & MySQL 5.5, D8.7 56 pass PHP 7 & MySQL 5.5, D8.6 56 pass PHP 7 & PostgreSQL 9.1, D8.7 56 pass PHP 7 & SQLite 3.14, D8.7 56 pass
#2	pathauto-increase_alias_length_1024_char-2858096-2.patch	2.82 KB	rp7
#2	8.x-1.x: PHP 5.5 & MySQL 5.5, D8.7 55 pass, 1 fail PHP 7 & MySQL 5.5, D8.6 55 pass, 1 fail PHP 7 & PostgreSQL 9.1, D8.7 55 pass, 1 fail PHP 7 & SQLite 3.14, D8.7 55 pass, 1 fail

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Comments

Comment #1

6 March 2017 at 12:53

maxilein created an issue. See original summary.

Comment #2

rp7 CreditAttribution: rp7 for Government of Flanders commented 20 September 2018 at 19:23

Title:	Maximum alias length still 255	» Increase maximum alias length to 1024 characters
Component:	Miscellaneous	» Code
Category:	Task	» Feature request

File	Size
pathauto-increase_alias_length_1024_char-2858096-2.patch	2.82 KB
8.x-1.x: PHP 5.5 & MySQL 5.5, D8.7 55 pass, 1 fail PHP 7 & MySQL 5.5, D8.6 55 pass, 1 fail PHP 7 & PostgreSQL 9.1, D8.7 55 pass, 1 fail PHP 7 & SQLite 3.14, D8.7 55 pass, 1 fail

Drupal core supports aliases with a maximum length of 1024 characters (see the "alias" column in the "url_alias" table). Pathauto currently limits this to 255 characters. Patch attached increased this Pathauto enforced limit to 1024 characters to make it consistent with Drupal core.

Comment #3

rp7 CreditAttribution: rp7 for Government of Flanders commented 20 September 2018 at 19:51

File	Size
pathauto-increase_alias_length_1024_char-2858096-3.patch	3.06 KB
8.x-1.x: PHP 5.5 & MySQL 5.5, D8.7 56 pass PHP 7 & MySQL 5.5, D8.6 56 pass PHP 7 & PostgreSQL 9.1, D8.7 56 pass PHP 7 & SQLite 3.14, D8.7 56 pass

1 file was hidden/shown/deleted

File	Size
pathauto-increase_alias_length_1024_char-2858096-2.patch	2.82 KB
8.x-1.x: PHP 5.5 & MySQL 5.5, D8.7 55 pass, 1 fail PHP 7 & MySQL 5.5, D8.6 55 pass, 1 fail PHP 7 & PostgreSQL 9.1, D8.7 55 pass, 1 fail PHP 7 & SQLite 3.14, D8.7 55 pass, 1 fail

Second attempt, now with the test adjusted.

Comment #4

rp7 CreditAttribution: rp7 for Government of Flanders commented 20 September 2018 at 20:02

Status:

Active

» Needs review

Comment #5

maxilein CreditAttribution: maxilein commented 24 September 2018 at 08:05

Isn't there a function to get the drupal default alias length by some function - instead of hard-coding it?
(I searched without success - I don't have an orientation in the code for path aliases..)

Comment #6

rp7 CreditAttribution: rp7 for Government of Flanders commented 28 September 2018 at 14:28

Status:

Needs review

» Active

Putting this issue back to "Active".

Found out that on my installation, I have the following (well hidden) piece of custom code running:

  // Increase the maximum URL alias length to 1024 characters.
  $schema_definition = drupal_get_module_schema('system', 'url_alias');
  if (!empty($schema_definition['fields']['alias']['length'])) {
    $schema_definition['fields']['alias']['length'] = 1024;
    $schema = Database::getConnection()->schema();
    $schema->dropIndex('url_alias', 'alias_langcode_pid');
    $schema->changeField('url_alias', 'alias', 'alias', $schema_definition['fields']['alias']);
    $schema->addIndex('url_alias', 'alias_langcode_pid', $schema_definition['indexes']['alias_langcode_pid'], $schema_definition);
  }

This makes my earlier statement about Drupal core supporting aliases up to 1024 characters... completely false. :-/

@maxilein

Isn't there a function to get the drupal default alias length by some function - instead of hard-coding it?

The only option I currently see is reading the schema definition. Something in the lines of

use Drupal\Core\Path\AliasStorage;
$schema_definition = AliasStorage::schemaDefinition();
$max_length = $schema_definition['fields']['alias']['length'];

But I'm in doubt if this is a proper way of doing things.

Comment #7

Chris Charlton

English

Los Angeles

CreditAttribution: Chris Charlton as a volunteer commented 3 January 2019 at 19:47

FWIW, URL lengths can be up to 1024 bytes, not characters. The coincidence of that number made me think I should post this.

Comment #8

maxilein CreditAttribution: maxilein commented 4 January 2019 at 10:52

255 * 4 bytes = 1020 bytes

BUT it seems that nowadays almost all browsers support much longer urls.

See a good discussion here: https://stackoverflow.com/questions/417142/what-is-the-maximum-length-of...

Comment #9

maxilein CreditAttribution: maxilein commented 4 January 2019 at 10:53

It makes me like the idea of a Drupal function even more...

Comment #10

Chris Charlton

English

Los Angeles

CreditAttribution: Chris Charlton as a volunteer commented 7 January 2019 at 20:22

Safe is best. Anything above legacy lengths/limits should be an override/setting for those who want to adopt. I'm just thinking of the legacy sites and browsers some regions may still be stuck on.