db.rake

namespace :db do
  task disconnect: :environment do
    ActiveRecord::Base.clear_all_connections!
  end

  desc "Run migrations from scratch (destructive!!) to validate the veracity of the versioned schema."
  task lint: %w[environment disconnect drop create migrate] do
    schema = ActiveRecord::Tasks::DatabaseTasks.schema_dump_path ActiveRecord::Base.connection_db_config

    sh(*%w[git diff --exit-code --], schema) do |ok, res|
      abort "db schema must match the result of running migrations" unless ok
    end
  end
end