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December 16, 2015 18:20
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Criando um arquivo migration. O símbolo de $ indica que estou no prompt do sistema operacional e você não deve digitá-lo,
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| rails g migration ChangeNomeSizeInDepartamento | |
| invoke active_record | |
| create db/migrate/20130428143550_change_nome_size_in_departamento.rb |
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