Rails upgrade checks for 2 October 2026
Check the Ruby requirement, replace dynamic route segments carefully, and test validation error consumers against the exact Rails source you plan to use.
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Rails Marshal audit checklist for old readers
Find old deserializers in Rails cookies, messages, caches and database columns. Tested examples distinguish a new writer from removal of the old reader.
Heroku exit checks for data, jobs and signing keys
A measured local rehearsal checks restored data, queued work and signing secrets, with a cutover checklist and a reasoned case for staying on Heroku.
Testing a Rails upgrade in CI without hiding failures
A runnable Rails CI fixture exposes dependency mismatches, misleading job assertions, schema drift and shared test state, with failures and repairs recorded.
When is extracting a Rails workflow into a service worth it?
Compare an internal module with a separate process using a tested contract example, then identify the evidence needed to justify extraction.
Ruby 3.3 to 3.4 before your next Rails upgrade
A tested Ruby upgrade with Rails held fixed explains bundled gems, chilled strings, parser tooling and output-sensitive tests, with a downloadable reproduction.
Rails adapter tests for currency fields and catalog changes
Reproduce wrong-currency validation and stale catalog selection in a Rails adapter, with explicit provider contracts and a local fake.