Fix upgrade for sites with no configured index

mattporritt / moodle-search_elastic

An Elasticsearch engine plugin for Moodle's Global Search

https://moodle.org/plugins/search_elastic

GNU General Public License v3.0

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Fix upgrade for sites with no configured index #43

Closed andrewhancox closed 5 years ago

tomdickman commented 5 years ago

This patch has been tested and confirmed working, it may be pertinent to refactor some methods to throw exceptions, rather than returning them in the future.