[Koha-bugs] [Bug 27070] New: Elasticsearch - with Elasticsearch 6 searches failing unless all terms are in the same field

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=27070

            Bug ID: 27070
           Summary: Elasticsearch - with Elasticsearch 6 searches failing
                    unless all terms are in the same field
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: P5 - low
         Component: Searching - Elasticsearch
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: nick at bywatersolutions.com

To recreate - be using Elasticsearch 6 in KOha

On sample data try searching for:
street shuffle

cool, that works

Now try searching for a word from title and the publisher name:
shuffle constable

No results, odd.

Try searching for:
shuffle AND constable

That works.

I cannot figure from the docs why this is the case - we pass a default
operator, that should be enough I thought, but no.

https://www.elastic.co/guide/en/elasticsearch/reference/6.8/query-dsl-query-string-query.html#query-string-syntax

for comparison:
https://www.elastic.co/guide/en/elasticsearch/reference/5.6/query-dsl-query-string-query.html


After testing the type => 'cross_fields' seems to do what we want

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