https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=43885
Bug ID: 43885
Summary: Elasticsearch: sorting on a field without a sort
mapping makes the whole search fail
Initiative type: ---
Sponsorship ---
status:
Product: Koha
Version: Main
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P5 - low
Component: Searching - Elasticsearch
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Target Milestone: ---
QueryBuilder::_sort_field appends "__sort" to the sort field without
checking that such a field exists in the index. When a field used for
sorting (call number, author, title, date of acquisition, popularity...)
is configured as not sortable, or is not mapped at all, Elasticsearch
rejects the whole query:
No mapping found for [cn-sort__sort] in order to sort on
and Koha shows "You did not specify any search criteria" /
"Unable to perform your search". If defaultSortField or
OPACdefaultSortField points to that field, every search fails.
The code was meant to handle fields without a sort mapping (sorting on
their .raw version for text fields), but that branch is never reached:
get_elasticsearch_mappings only records sortable fields in sort_fields,
so a field that is not sortable is indistinguishable from an unknown
field, and both get "__sort" appended. The existing tests did not catch
it because they mock sort_fields with explicit 0 values.
To reproduce:
1. Administration > Search engine configuration (Elasticsearch):
set "Sortable" to No for cn-sort and save.
2. Rebuild the index so that the mapping is recreated:
misc/search_tools/rebuild_elasticsearch.pl -d -b
3. Search the staff interface and sort by call number: the search fails.
4. Set OPACdefaultSortField to "call number": every OPAC search fails.
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