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Fix bug where 'weight by content type' feature didn't work as expected in general search
Thanks to @NamePros for sponsoring this update.
Display various search term constraints on the search results form.
For developers to implement support in 3rd party add-ons:
Each search constraint needs a svSearchConstraint. prefixed phrase.
Arrays are mapped to phrases by adding a _ for each sub-array/key as such; c[warning][points][lower] => svSearchConstraint.warning_points_lower
Each search order needs a svSearchOrder. prefixed phrase.
Extend XF\Entity\Search::getSpecializedSearchConstraintPhrase(string $key, $value) to provide custom phrase handling (ie node names)
Extend XF\Entity\Search::formatConstraintValue(string $key, $value) to provide custom formatting.
Extend XF\Entity\Search::setupConstraintFields to populate $svDateConstraint/$svUserConstraint/$svIgnoreConstraint properties which control formatting
Use the debug option "List all unphrased search constraints" which will dump unmapped contraints to search results page.