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gem 'csv_validator'

attr_accessor :my_csv_file

validates :my_csv_file, :csv => true

validates :my_csv_file, :csv => {
                          :columns => 3, # an exact number of columns
                          :max_columns => 10, # a maximum number of columns
                          :min_columns => 1, # a minimum number of columns
                          :rows => 20, # an exact number of rows
                          :max_rows => 30, # a maximum number of rows
                          :min_rows => 2, # a minimum number of rows
                          :email => 0, # will check to make sure all emails in specified column are valid email addresses
                          :numericality => 0, # will check to make sure all values in specified column are numerical
                        }