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Scan-and-set

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#!/usr/bin/perl -w
 #
 # Sample script to scan RT ticket attachments for a 4 digit number
 # following the string "important number" and add the value to
 # a custom field called "CustomField"
 #
 # It's an example of scanning attachchments and setting a custom field
 # from an external Perl script
 #
 # author    rmeden@yahoo.com
 #
 use strict;
 
 use lib ("/path/to/rt/lib");  # Change this to your RT lib path!
 use RT::Interface::CLI qw(CleanEnv GetCurrentUser GetMessageContent loc);
 use RT::Tickets;
 
 select STDERR; $|=1;
 select STDOUT; $|=1;
 
 # Clean our environment
 CleanEnv();
 
 # Load the RT configuration
 RT::LoadConfig();
 RT::Init();
 
 
 my $tickets = new RT::Tickets($RT::SystemUser); # Used to store Ticket search results
 $tickets->LimitStatus(VALUE => 'new');
 $tickets->LimitStatus(VALUE => 'open');
 $tickets->LimitCustomField(CUSTOMFIELD => 'CustomField',
                            OPERATOR    => "is",
                            VALUE       => "NULL");
 
 # Loop through tickets
 while (my $Ticket = $tickets->Next) {
     my $NUM="";
 
     #
     # Scan attachments and keep latest value
     #
     my $txns = $Ticket->Transactions;
     while (my $txn = $txns->Next ) {
        my $attachments = RT::Attachments->new($txn->CurrentUser);
        $attachments->Limit( FIELD => 'TransactionID', VALUE => $txn->id );
        $attachments->OrderBy( FIELD => 'Id', ORDER => 'ASC' );
        while ( my $a = $attachments->Next ) {
               next unless $a->ContentEncoding eq "none";
               $NUM=$1 if $a->Content =~ /important number (\d{4})/m;
           }
       }
 
      next unless $NUM; # nothing found?
 
      printf "Setting Ticket %d Important Number %d\n",$Ticket->id,$NUM;
      $Ticket->AddCustomFieldValue(Field=>"CustomField",Value=>$NUM,RecordTransaction=>0);
  } # Ticket loop
 
 $RT::Handle->Disconnect();
 exit;
 
 

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