NAME

       Catmandu::Fix::marc_add - add new fields to marc

SYNOPSIS

           # Set literal values
           marc_add('900', a, 'test' , 'b', test)
           marc_add('900', ind1 , ' ' , a, 'test' , 'b', test)
           marc_add('900', ind1 , ' ' , a, 'test' , 'b', test)

           # Set control fields
           marc_add('009','_','23123131')

           # Copy data from an other field (when the field value is an array, the
           # subfield will be repeated)
           marc_add('900', a, '$.my.data.field')

DESCRIPTION

       Add a new subfield to MARC record.

METHODS

   marc_add(MARC_FIELD, SUBFIELD, VALUE, [ SUBFIELD, VALUE , ... ])
       Add new subfields to a MARC record. The MARC_FIELD should contain a marc field name, all
       other arguments contain the subfields to be added.

       By default literal values will be added. To point to an existing value in a record use the
       JSON_PATH syntax with a dollar '$.' added in front.

INLINE

       This Fix can be used inline in a Perl script:

           use Catmandu::Fix::marc_add as => 'marc_add';

           my $data = { record => [...] };

           $data = marc_add($data,'245','a','title');

SEE ALSO

       Catmandu::Fix::marc_set, Catmandu::Fix::marc_copy, Catmandu::Fix::marc_cut,
       Catmandu::Fix::marc_paste