[Koha-bugs] [Bug 33193] Book cover image visibility depends on the order of 856 fields

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=33193

--- Comment #1 from Katrin Fischer <katrin.fischer at bsz-bw.de> ---
I feel like this is asking too much of CustomCoverImagesURL. In order to make
this work, we'd need a complex way to specificy which repeated fields it should
look at. In this case we'd need to be able to specify that it also should
filter on $q being image.

Especially since $q is not cataloged to the standard here:

https://www.loc.gov/marc/bibliographic/bd856.html
$q - Electronic format type

Identification of the electronic format type and version. Electronic format
type should be specified with a code from the list of registered Internet Media
Types (MIME types), taken from: IANA Media Types. If necessary (e.g., in order
to specify a file format version to support access or digital preservation)
additional information, such as PRONOM Unique Identifier (PUID) codes, may be
included in addition to the information provided by the MIME Type by repeating
subfield $q.


Maybe OPACDisplay856uAsImage would work better here or we could improve on that
pref.

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