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ruby-on-railsformsscaffolding

Modify scaffold :string for :text

I have a scaffold, but it fails because the text of the users is longer than string permits. So I would like to change the kind of data, rails g scaffold Dreams Dream:string for Dreams:text, It is possible?

Solution

  • If you have already migrate, undo it:

    rake db:rollback
rails destroy scaffold Dreams Dream:string

    And redo it

    rails generate scaffold Dreams Dream:text
rake db:migrate

    You don't need to make rake db:rollback and rake db:migrate if you have just generated your scaffold.

    If it is not your last migration, you can undo it with:

    rake db:migrate:down VERSION=<version>
# version is the number of your migration file you want to revert

    You can create a new migration:

    rails generate migration change_dream_type_in_dreams

    and open migration to use change_column

    def self.up
  change_column :dreams, :dream, :text
end

def self.down
  change_column :dreams, :dream, :string
end

    Finally, rake db:migrate.