elastic search: setup for autocomplete

gistfile1.js

curl -XPUT 'http://127.0.0.1:9200/argmaps-development/?pretty=1'  -d '
{
   "mappings" : {
      "questions" : {
         "properties" : {
            "question_text" : {
               "fields" : {
                  "ngrams" : {
                     "type" : "string",
                     "analyzer" : "my_ngram"
                  },
                  "question_text" : {
                     "type" : "string",
                     "analyzer" : "english"
                  }
               },
               "type" : "multi_field"
            }
         }
      }
   },
   "settings" : {
      "analysis" : {
         "filter" : {
            "mynGram" : {
               "max_gram" : 10,
               "min_gram" : 2,
               "type" : "edge_ngram"
            }
         },
         "analyzer" : {
            "my_ngram" : {
               "filter" : [
                  "stop",
                  "lowercase",
                  "mynGram"
               ],
               "tokenizer" : "standard"
            }
         }
      }
   }
}
'


curl -XPOST 'http://127.0.0.1:9200/argmaps-development/questions?pretty=1'  -d '{ "question_text" : "meet entrepreneurs" }'
curl -XPOST 'http://127.0.0.1:9200/argmaps-development/questions?pretty=1'  -d '{ "question_text" : "play basketball"}'
curl -XPOST 'http://127.0.0.1:9200/argmaps-development/questions?pretty=1'  -d '{ "question_text" : "trekking"}'
curl -XPOST 'http://127.0.0.1:9200/argmaps-development/_refresh?pretty=1'


curl -XGET 'http://127.0.0.1:9200/argmaps-development/questions/_search?pretty=1'  -d '
{
   "query" : {
      "bool" : {
         "should" : [
            {
               "text" : {
                  "question_text.ngrams" : {
                     "operator" : "and",
                     "query" : "trek"
                  }
               }
            },
            {
               "text" : {
                  "question_text" : "trek"
               }
            }
         ]
      }
   },
   "highlight" : {
      "fields" : {
         "question_text.ngrams" : {},
         "question_text" : {}
      }
   }
}
'