Let AR::Base properly lazy-loaded if Railtie is available #114
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Since the current code calls
ActsAsList::Railtie.insert
in the top-level, just requiring this gem (usually via Bundler) would immediately load AR::Base and trigger all of its initializers, which would slowdown the server startup, spec execution that does not depend on AR, etc.Also, currently
ActsAsList::Railtie.insert
call happens three times on the gem initialization, which of course is actually needed to be done only once.