Conditionally adding term filters to elasticsearch filter query -

i've been wondering how go checking if search parameter not empty before adding term filter filtered query. limited experience elasticsearch, seems have build exact query ahead of time.

if using node / mongo, know along lines of

var searchterms = {}; if(req.body.country){   searchterm['user.country'] = req.body.country; }  if(req.body.company){   searchterm['user.company'] = req.body.company; }  if(req.body.salary){   searchterm['user.salary'] = req.body.salary; }  users.find(searchterm)   .exec(function(err, users) {     if(!err){       res.send(200, users);         }     else{       res.send(200, err);     }  });     

and in angular i've built query elasticsearch works correctly long parameters filled in. guess question how conditionally , dynamically build filtered query based on parameters have been filled in user.

i.e. user fills out country , company leaves out salary. therefore, salary wouldn't included term filter.

client.search({   index: 'firebase',   type: 'user',   body: {     "query": {        "filtered" : {            "query" : {                "match_all" : {}              },              "filter": {                 "and": [                     {                       "term": { "country" : searchparameters.country }                     },                     {                       "term": { "company" : searchparameters.company }                     },                     {                       "term": { "salary" : searchparameters.salary }                     }                 ]              }         }  } 

thank in advance!

what have been doing node/mongo describe way go elasticsearch queries.

so js code might like:

var filters = []; var fields = ['country', 'company', 'salary',...]; // or kind of hash map req fields elasticsearch fields if appropriate for(var k = 0; k < fields.length; k++) {     if(req.body[fields[k]]) {         var termq = { term : {} };         termq.term[fields[k]] = req.body[fields[k]];         filters.push(termq);     } }  var query = {     filtered : {         query : { match_all : {} },         filter : filters.length ? { , : filters } : {}     } };  client.search({ index: ..., type: ..., body: query }, ...);