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Fix FrozenError from nil.to_s << on Ruby 2.7

Open r7kamura opened this issue 5 years ago • 0 comments

When I tried to upgrade Ruby version from 2.6 to 2.7, I had a problem with FrozenError from #nested_form_for.

capture may return nil, and nil.to_s is frozen from Ruby 2.7.

Ruby 2.6

$ ruby -e 'p nil.to_s.frozen?'
false

Ruby 2.7

$ ruby -e 'p nil.to_s.frozen?'
true

r7kamura avatar Dec 01 '20 17:12 r7kamura