Index does not get updated when saving a model

[MarkejN]

Checklist before I submit this issue report

I confirm that:

• I have tested this with the latest version available
• I have read documentation @ http://metamodels.readthedocs.org/en/ or http://metamodels.readthedocs.org/de/
• I have checked the Contao community forums for references https://community.contao.org/
• I have checked existing issues for duplicates and found none @ https://github.com/MetaModels/attribute_levensthein/issues?q=is%3Aissue

My environment is:

Key	Value	Comments
PHP version:	8.3.12
Contao version:	4.13.50
MetaModels version:	dev-release/2.3.0
Installation via composer	yes
Installed MetaModels packages	28

Issue description

The levenshtein index does not get updated in my installation when saving a model. I noticed two issues:

1. The checksum in WordList is calculated based on the relevance and not on the words (e.g. sha1(11)). If the number of words does not change, the checksum will be correct, even if the words have changed:

   attribute_levenshtein/src/Attribute/WordList.php

   Line 70 in 4c15075

   $this->checksum = sha1(implode('', $this->words));

2. Somehow $metaModel->getActiveLanguage() returns en, although the MetaModel is not translated and the locale in the backend is de. I only need and use German. When words are added after saving, they are saved for en and not for de.

   attribute_levenshtein/src/Attribute/AttributeLevenshtein.php

   Lines 192 to 197 in 4c15075

   	public function modelSaved($item)
   	{
   	$indexer = $this->getIndex();
   	$blacklist = $this->getBlackList();
   	$metaModel = $this->getMetaModel();
   	$language = $metaModel->getActiveLanguage();

Steps to reproduce

1. Open a model that is already indexed and change one of the words, without changing the number of words.
2. Search for the new word in the frontend.
3. The result is empty.
4. Manually regenerate the search index in the backend.
5. The result is displayed.

Describe the behaviour of the application

The result is empty.

Describe the expected behaviour of the application

The model with the word should be displayed.

Screenshots

Table tl_metamodel_levensthein with the checksums sha1(11), sha1(111), ... and language en: