Flowdock
method

validate

Importance_0
Ruby on Rails latest stable (v4.2.1) - 0 notes - Class: ActiveRecord::Migrator
validate(migrations) private

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# File activerecord/lib/active_record/migration.rb, line 1012
    def validate(migrations)
      name ,= migrations.group_by(&:name).find { |_,v| v.length > 1 }
      raise DuplicateMigrationNameError.new(name) if name

      version ,= migrations.group_by(&:version).find { |_,v| v.length > 1 }
      raise DuplicateMigrationVersionError.new(version) if version
    end
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