How to make Text::slug() convert german umlauts properly?

Question

I am using CakePHP 3.6, and when I am using words with german umlauts like:

Text::slug('Grundstücke')

I will get:

Grundstucke (where ü = u)

but that's not correct, I should get:

Grundstuecke (where ü = ue)

Is there an option to set so that umlauts are being converted the way I want them to?

Answer 1

Change your transliterator

The Text::slug() uses internally transliterator_transliterate (see php doc).

So you need to change the default transliterator that is being used.

After some research I found one that will work for you.

At the end of your bootstrap.php file add:

\Cake\Utility\Text::setTransliteratorId( 'de-ASCII; Any-Latin; Latin-ASCII; [\u0080-\u7fff] remove ');

Then your text will be converted as you expect.

Notes

Resources I've used to find this answer:

• CakekPHP Text::transliterate()
• Transliteration Identifiers Documentation
• transliterator_list_ids - to get a list of valid identifiers - this is how I found the one that finally worked: de-ASCII
• Text Utility API - to set the a new default transliterator id.