Don't force lowercase search term for generate_search_term_expression

[alecritson]

Currently when scout is disabled, the search term is being forced to lowercase, meaning when doing a where query in the database with LIKE it's not matching any results.

This PR stops this behaviour so products can be matched.

Fixes #2094

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
lunar-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 13, 2025 8:12am

[glennjacobs]

As MySQL LIKE is case-insensitive, how does it fix it?

[glennjacobs]

I see that when using JSON it becomes a binary string, that IS case-sensitive.

[glennjacobs]

I'm not sure this is the correct solution, as we don't want a case-sensitive search.

I would imagine we want to set both the field being searched upon and the keyword to be lowercase, to achieve a case-insensitive search.

So we'd retain the lowercasing of the keyword, but update the query to also lowercase the field in the LIKE comparison.

By using LOWER() in the query we can achieve this, and a bonus is that it's compatible with both MySQL and PostgreSQL.