#18883: Wordpress - Add automatic fallback for non-pretty permalinks

[everettbu]

Mirror of n8n-io/n8n#20933
Original author: prakharg200

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Summary

The WordPress node now automatically handles both pretty and non-pretty permalink configurations. When a request to /wp-json/ returns a 404 error, the node automatically retries using the /?rest_route= format, which works universally across all WordPress permalink settings.

Before: WordPress node only worked with pretty permalinks enabled (requires mod_rewrite/nginx configuration)

After: WordPress node works with any permalink configuration automatically - no user configuration needed

Testing

1. With pretty permalinks: Configure WordPress credentials with pretty permalinks enabled → Request succeeds using /wp-json/wp/v2/...

2. With plain permalinks: Configure WordPress credentials with plain permalinks → Initial /wp-json/ request fails with 404 → Automatically retries with /?rest_route=/wp/v2/... → Request succeeds

3. Edge cases: Trailing slashes normalized correctly, non-404 errors don't retry, proper error messages when both formats fail

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Related Linear tickets, Github issues, and Community forum posts

Fixes #18883

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Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)