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class ChangeFamilyInOs < ActiveRecord::Migration
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class Operatingsystem < ActiveRecord::Base; end
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def self.up
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add_column :operatingsystems, :type, :string, :limit => 16
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add_index :operatingsystems, :type
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Operatingsystem.reset_column_information
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families = ["Debian", "Redhat", "Solaris", "Suse", "Windows"]
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ok = true
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Operatingsystem.all.each do |os|
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if os.family_id
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say "Converting #{os.family_id} into #{families[os.family_id]}"
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os.update_attribute :type, families[os.family_id]
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ok &&= os.valid?
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end
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end
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if ok
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remove_column :operatingsystems, :family_id
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else
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say "Failed to migrate all os.family_ids to os.family"
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end
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end
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def self.down
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add_column :operatingsystems, :family_id, :integer
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Operatingsystem.reset_column_information
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families = Operatingsystem.families
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ok = true
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for os in Operatingsystem.all
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if os.family
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say "Converting #{os.family} into #{families.index(os.family.to_s)}"
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os.update_attribute :family_id, families.index(os.family.to_s)
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ok &&= os.valid?
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end
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end
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if ok
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remove_index :operatingsystems, :type
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remove_column :operatingsystems, :type
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else
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say "Failed to migrate all os.families to os.family_ids"
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end
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end
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end
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