code: function (query) {
          var fieldList = ['name', 'owner', 'description', 'keyword'];
          var parsedField = _.find(fieldList, function (field) {
            return query.indexOf(field + ':') === 0;
          });
          var parsedQuery = parsedField ? query.replace(new RegExp('^' + parsedField + ':'), '') : query;
          return {query: parsedQuery, field: parsedField};
        }
docs: Parse query string to {query,field} object