Remove deprecation warning during migrate about timestamps #242
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This warning occurs when you tried to rake:db migrate in a rails 4.2
application. It's a deprecation warning for upcoming rails 5, a null
option need to be given :
DEPRECATION WARNING:
#timestamp
was called without specifying anoption for
null
. In Rails 5, this behavior will change tonull: false
. You should manually specifynull: true
to prevent the behaviorof your existing migrations from changing. (called from block in up at
db/migrate/20151104181305_create_activities.rb:12)