Three months ago I merged a migration that added a null: false column with no default value. The table had 800k rows. Production broke, and the worst part wasn't the bug itself — it was that nothing in our workflow could have caught it. I was staring at a GitHub diff, reading raw Ruby DSL, trying to mentally reconstruct what the table looked like before this migration and whether the change would
Why I Built a Visual Layer for Rails Migrations (And Why Reading Ruby DSL in a Diff Wasn't Enough)
João Victor Valentim·Dev.to··1 min read
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