Tire gem: How to access Elasticsearch's 'highlight' property? - ruby-on-rails

Question

I have some Rails models that are indexed in Elasticsearch (via Tire gem). I can index new documents and query the existing index.
What I can't seem to do is get ahold of the highlight attached to a record from within my Rails app. I can however see that highlight is returned in the json when I interact with Elasticsearch directly via curl.
When I try to access the highlight property of my record I get: undefined method 'highlight' for #<Report:0x007fe8afa54700>
# app/views/reports/index.html.haml
%h1 Listing reports
...
- #reports.results.each do |report|
%tr
%td= report.title
%td= raw report.highlight.attachment.first.to_s
But if I use curl I can see the highlight is returned to Tire...
$ curl -X GET "http://localhost:9200/testapp_development_reports/report/_search?load=true&pretty=true" -d '{query":{"query_string":{"query":"contains","default_operator":"AND"}},"highlight":{"fields":{"attachment":{}}}}'
{
"took" : 1,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"failed" : 0
},
"hits" : {
"total" : 2,
"max_score" : 0.111475274,
"hits" : [ {
"_index" : "testapp_development_reports",
"_type" : "report",
"_id" : "1",
"_score" : 0.111475274, "_source" : {"id":1,"title":"Sample Number One",...,"attachment":"JVBERi0xMJ1Ci... ...UlRU9GCg==\n"},
"highlight" : {
"attachment" : [ "\nThis <em>contains</em> one\n\nodd\n\n\n" ]
}
}, {
"_index" : "testapp_development_reports",
"_type" : "report",
"_id" : "2",
"_score" : 0.111475274, "_source" : {"id":2,"title":"Number two",...,"attachment":"JVBERi0xLKM3OA... ...olJVPRgo=\n"},
"highlight" : {
"attachment" : [ "\nThis <em>contains</em> two\n\neven\n\n\n" ]
}
} ]
}
}
The search method in the model:
...
def self.search(params)
tire.search(load: true) do
query { string params[:query], default_operator: "AND" } if params[:query].present?
highlight :attachment
end
end
...

Answer 1

Method highlight is inaccessible when you are using load: true option. This should be fixed in future versions of Tire.
edit: you can use each_with_hit method to access returned elasticsearch values now
For example:
results = Article.search 'One', :load => true
results.each_with_hit do |result, hit|
puts "#{result.title} (score: #{hit['_score']})"
end

Answer 2

You can find my answer right at this post
Elasticsearch/Lucene highlight
My method works fine for me and wish you can get it work as well.