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Editorial Team
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Asked: 2026-06-12T19:24:37+00:00

How would i fix this code to update only if something has changed. i

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How would i fix this code to update only if something has changed.
i am updating using csv, i need to change the confirmation field but only if something in the record has changed.

 CSV.parse(atdecode,{headers: true, col_sep:  "|", force_quotes:  true, quote_char: "~", converters: :date}) do |row|
                                   @contracts = Contract.unscoped.where(:unique3 => row[0]).first_or_create
                                   @contracts.update_attributes( {
                                    unique3: row[0],
                                    prntkey23: row[1],
                                    prntkey13: row[2],
                                    act_code: row[3],
                                    accounting_confirmation_date: row[4],
                                    act_form: row[5],
                                    act_net: row[6],
                                    agent: row[7],
                                    act_booked: row[8]
                                         })
                                     if @contracts.changed?
                           @contracts.update_attribute( {
                           confirmation: 0
                         })
                       end
                         end
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1 Answer

  1. Editorial Team

    I think this will do

    @contracts.attributes = {unique3: row[0], 
                         prntkey23: row[1],
                         prntkey13: row[2],
                         act_code: row[3],
                         accounting_confirmation_date: row[4],
                         act_form: row[5],
                         act_net: row[6],
                         agent: row[7],
                         act_booked: row[8]
                         }
@contracts.confirmation = 0 if @contracts.changed?
@contracts.save
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