ORM breakout

orm.rb

class ORM
    def save
        table_name = self.class

        sql_columns = self.instance_variables.map do |i|
            i.slice(1, i.length)
        end.join(', ')

        sql_values = self.instance_variables.map do |i|
            '"' << self.instance_variable_get("#{i}") << '"'
        end.join(", ")

        sql_command = "INSERT INTO #{table_name}
            (#{sql_columns})
            VALUES
            (#{sql_values})"
    end
end

class User < ORM
    attr_accessor :name, :email, :phone

    def initialize(name, email, phone, gender)
        @id = "5"
        @name = name
        @email = email
        @phone = phone
        @gender = gender
    end

end

class Dog < ORM
    attr_accessor :num_legs, :personality_type, :bark_pitch
end

dog = Dog.new
dog.num_legs = 3
dog.personality_type = 'evil'
dog.bark_pitch = 'high pitched'
puts dog.save

murat = User.new("murat", "a@b.c", "1234234", "doesnt matter in this day and age")
puts murat.save