[Solution] A memo that I had a hard time because the format of sinatra-validation changed


When I diverted the sinatra app I made a while ago, an error occurred in validation.


It seems that the version of dry-validation has changed and the format has changed.

Diversion source code

post '/hoge' do
    validates {

Modified code

post '/hoge' do
            required(:fuga).filled(:string, format?: DATE_FORMAT)


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