Add cascading foreign keys to app

gistfile1.rb

class TableUpdater
  attr_accessor :tables, :migration_statements

  def initialize
    @tables = ActiveRecord::Base.connection.tables.reject{|t| t == "schema_migrations"}
    @migration_statements = []
  end

  def make_migration_file
    @tables.each do |table|
      foreign_keys = ActiveRecord::Base.connection.foreign_keys(table)
      foreign_keys.each do |foreign_key|
        from_table = foreign_key.from_table
        to_table = foreign_key.to_table
        remove = "remove_foreign_key :#{from_table}, :#{to_table}"
        add = "add_foreign_key :#{from_table}, :#{to_table}, on_delete: :cascade"
        @migration_statements << remove
        @migration_statements << add
      end
    end
    puts @migration_statements
  end
end