Dan Ribbens b0b2fc6c47 feat: join field support relationships inside arrays (#9773) ...

### What?

Allow the join field to have a configuration `on` relationships inside
of an array, ie `on: 'myArray.myRelationship'`.

### Why?

This is a more powerful and expressive way to use the join field and not
be limited by usage of array data. For example, if you have a roles
array for multinant sites, you could add a join field on the sites to
show who the admins are.

### How?

This fixes the traverseFields function to allow the configuration to
pass sanitization. In addition, the function for querying the drizzle
tables needed to be ehanced.

Additional changes from https://github.com/payloadcms/payload/pull/9995:

- Significantly improves traverseFields and the 'join' case with a raw
query injection pattern, right now it's internal but we could expose it
at some point, for example for querying vectors.
- Fixes potential issues with not passed locale to traverseFields (it
was undefined always)
- Adds an empty array fallback for joins with localized relationships

Fixes #
https://github.com/payloadcms/payload/discussions/9643

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Co-authored-by: Because789 <thomas@because789.ch>
Co-authored-by: Sasha <64744993+r1tsuu@users.noreply.github.com>

2024-12-17 13:14:43 -05:00

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