search as you type with elasticsearch,angularjs - angularjs

Question

I am working on search as you type functionality with angularjs and elastic search.I am passing the $viewValue to factory written in angular and it fetches data from angular.Please check code below.
services.factory('instantSearch',['$q', 'esFactory', '$location', function($q, elasticsearch, $location){
return{
instantResult : function(term){
var client = elasticsearch({
// host: $location.host() + ':9200'
host: 'localhost:9200'
});
var deferred = $q.defer();
client.search({
"index": 'stocks',
"type": 'stock',
"body": {
"from" : 0, "size" : 20,
"query": {
"bool":{
"should":[
{
"match_phrase":{
"name": term
}
},
{
"match_phrase":{
"symbol": term
}
},
{
"match":{
"industry": term
}
}
]
}
}
}
}).then(function(result) {
var hits = result.hits.hits;
deferred.resolve(hits);
},
function (err) {
console.trace(err.message);
}, deferred.reject);
return deferred.promise;
}
};
}]);
This code is working fine but the problem is that I get result when input matches complete term in elasticsearch index's field.So I want to implement token analyzer which will match token(ngram - 1,2,3) and provide result on typing of each character.
So to add analyzer code we have to add settings in te elasticserach index as below:
"settings": {
"analysis": {
"filter": {
"autocomplete_filter": {
"type": "edge_ngram",
"min_gram": 1,
"max_gram": 20
}
},
"analyzer": {
"autocomplete": {
"type": "custom",
"tokenizer": "standard",
"filter": [
"lowercase",
"autocomplete_filter"
]
}
}
}
}
But I am not getting the way to pass the argument here.Every example I checked shows output with curl command.How can we mix analyzer with the working code above.
Thanks for help.

Answer 1

Have you added the analyzer to the fields name, symbol and industry in your elastic search mapping?
curl -XPUT 'http://localhost:9200/index/type/_mapping?ignore_conflicts=true' -d'
{
"type": {
"properties": {
"name": {
"type": "string",
"analyzer": "autocomplete"
}
}
}
}'
Use ignore_conflicts=true without fail.
If you still face issues, then you might have to create a new index, add analyzer and filter to setting, create the desired mapping and then upload the data again.