中文搜索使用ik分词器

app/chewy/statuses_index.rb

@@ -58,6 +58,7 @@ class StatusesIndex < Chewy::Index
 
       field :text, type: 'text', value: ->(status) { [status.spoiler_text, Formatter.instance.plaintext(status)].concat(status.media_attachments.map(&:description)).concat(status.preloadable_poll ? status.preloadable_poll.options : []).join("\n\n") } do
         field :stemmed, type: 'text', analyzer: 'content'
+        field :chn    , type: 'text', analyzer: 'ik_max_word', search_analyzer: 'ik_smart'
       end
 
       field :searchable_by, type: 'long', value: ->(status, crutches) { status.searchable_by(crutches) }

app/lib/search_query_transformer.rb

@@ -23,7 +23,7 @@ class SearchQueryTransformer < Parslet::Transform
     def clause_to_query(clause)
       case clause
       when TermClause
-        { multi_match: { type: 'most_fields', query: clause.term, fields: ['text', 'text.stemmed'] } }
+        { multi_match: { type: 'most_fields', query: clause.term, fields: clause.term.match?('^[a-zA-Z]*$') ? ['text', 'text.stemmed'] : ['text.chn']} }
       when PhraseClause
         { match_phrase: { text: { query: clause.phrase } } }
       else