rake - how to detect whether my rails is running in migration or not in environment.rb -

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Any easy way to find out? I want to leave some code in envirmonment.rb while migration rack.

I had this problem in a legacy application I was maintaining some observers who migrated to a certain point before Were interfering with them, so I disabled them during migration by checking application names and arguments 

  activate # supervisors who should always run # config.active_record. Supervisor =: cacher ,: garbage_collector,: migrators # migrants break migrating from VERSION xxx - disable them for Rake DB: as long as the file (.basename ($ 0) == "rake" & amp; & Amp; ARGV.include? ("DB: Migrate") config.active_record.observers =: user_observer end

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