Man pages sections > man3 > Catmandu::Fix::Bind::marc_each

Catmandu::Fix::Bind::list - a binder that loops over MARC fields

Catmandu::Fix::Bind::marc_each(3pm) User Contributed Perl Documentation Catmandu::Fix::Bind::marc_each(3pm)

NAME

Catmandu::Fix::Bind::list - a binder that loops over MARC fields

SYNOPSIS

    # Only add the 720 field to the authors when the $e subfield contains a 'promotor'
    do marc_each()
        if marc_match("720e","promotor")
            marc_map("720ab",authors.$append)
        end
    end
    # Delete all the 500 fields
    do marc_each()
        if marc_match("500",".*")
            reject()
        end
    end

DESCRIPTION

The marc_each binder will iterate over each individual MARC field and execute the fixes only in context over each individual field.
If a MARC record contains:
    500  $aTest
    500  $aTest2$eskip
    500  $aTest3
then the fix
    do marc_each()
        marc_map("500",note.$append)
    end
will have the same effect as
    marc_map("500",note.$append)
because "marc_map" by default loops over all repeated MARC fields. But the "marc_each" bind has the advantage to process fields in context. E.g. to only map fields where the $e doesn't contain 'skip' you can write:
    do marc_each()
        unless marc_match("500e",skip)
            marc_map("500",note.$append)
        end
    end

SEE ALSO

Catmandu::Fix::Bind
2016-02-22 perl v5.22.1