NoMethodError (undefined method `highlight' for #<Elasticsearch::Model::Response::Result>
Maybe is a silly observation, but did you tried to change the value
:highlight to :_highlight ?
class ElasticsearchResultsSerializer < ActiveModel::Serializer attributes :_id, :_highlight, :_score, :_source def _source @article = object._index.singularize.capitalize.constantize.find(object._id) @serializer = "#{object._index.singularize.capitalize}Serializer".constantize @serializer.new(@article) endend
I would try switching fields to:
fields: { :"*" => {}}Just to see if that gets rid of the error. See the following: https://github.com/elastic/elasticsearch-rails/issues/446