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No, I don't have any at the moment. But I have feeded an older plugin version and the new one for the AI, to analyse the differences and find possible problems. This is what I got.
Analysis of WPML Domain Per Language Issue
Based on my analysis of the WPML plugin code, I've identified a potential issue that could cause the "A different domain per language" setting to malfunction, resulting in language domains being reset to the default domain.
The Problem
The issue appears to be related to how the domain settings are handled in the URL conversion process. When a language domain is incorrectly reset to the default domain, it disrupts the entire site's functionality because URLs are no longer properly mapped to the correct language domains.
Key Findings:
Domain Settings Storage:
Language domains are stored in the language_domains setting in the WPML settings array. These domains are used by the WPML_URL_Converter_Domain_Strategy class to convert URLs between different language domains.
Domain Handling Methods:
In the current version, there are new methods in the SitePress class for handling domains:
get_domain_by_language()
is_language_domain_setting_enabled()
is_language_domain_setting_disabled()
get_default_domain()
These methods don't exist in the older version, suggesting they were added to improve domain handling.
Potential Issue:
- The problem likely occurs when the domain settings are being saved or updated.
- When a language is added or modified, the domain settings might not be properly preserved.
- The URL converter factory creates a domain converter that uses these settings, and if they're incorrect, URLs will be converted incorrectly.
Domain Validation:
There doesn't appear to be strong validation to ensure that domain settings remain consistent across language changes.
When a language is added or modified, the domain settings might be reset or not properly updated.
Possible Causes
Settings Persistence Issue:
When updating language settings, the domain settings might not be properly saved or might be overwritten.
Domain Initialization Problem:
When initializing the URL converter, if the domains aren't properly loaded, they might default to the main domain.
Language Switching Side Effects:
When switching languages or updating language settings, there might be side effects that reset domain configurations.
Cache Inconsistency:
The URL converter uses caching to improve performance. If the cache isn't properly invalidated when domain settings change, it might use outdated domain information.
Recommended Solution Approach
To fix this issue, I would recommend:
Improve Domain Settings Persistence:
Ensure that domain settings are properly saved and not overwritten during language updates.
Add validation to prevent domain settings from being reset unintentionally.
Add Domain Validation:
Implement validation to ensure that domain settings remain consistent and valid.
Add checks to prevent domains from being reset to the default domain unless explicitly requested.
Review Cache Invalidation:
Ensure that caches are properly invalidated when domain settings change.
This would prevent outdated domain information from being used.
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