How to uninstall Ruby on Rails plugin with migrations easily?

Question

I have a Rails application with numbered migrations 001_..., 002_..., etc.

I have several plugins A,B,C with their own migrations 001_.., 002_... etc. How to remove the particular plugin B and clean the schema (making B plugin migrations down)

Answer 1

if they were migrated in order A B C then migrate back to A state remove Plugin B and Plugin B's migration then migrate to current

should do the trick