Algolia - Search with a condition to look into an array of string - ruby-on-rails-4

Question

I am using rails and algolia gem with mongoid datastore.
I am sending data to algolia for a model Question. One of the doc example in Algolia system is
objectID: 5691e056410213a381000000
text: "what is #cool about your name Mr. John? #name #cool"
asked_to: ["565571704102139759000000", "i7683yiq7r8998778346q686", "kjgusa67g87y8e7qtwe87qwe898989"]
asked_by: "564a9b804102132465000000"
created_at: "2016-01-10T04:38:46.201Z"
card_url: "http://localhost:3000/cards/5691e056410213a381000000"
answerers: []
has_answer: false
requestor_count: 0
status: "active"
popularity_point: 0
created_at_i: 1452400726
_tags: ["cool", "name"]
I want to find all those documents, where it meets these two conditions:
1) text contains your name
2) asked_to contains i7683yiq7r8998778346q686
I am using Twitter's typeahead javascript library. And my UI's javascript to implement algolia search is as follows:
<input class="typeahead ui-widget form-control input-md search-box tt-input" id="typeahead-algolia" placeholder="Search questions" spellcheck="false" type="text" autocomplete="off" dir="auto" style="position: relative; vertical-align: top;">
$(document).on('ready page:load', function () {
var client = algoliasearch("APPLICATION_ID", "SEARCH_KEY");
var index = client.initIndex('Question');
$('#typeahead-algolia').typeahead(
{
hint: false,
highlight: true,
minLength: 1
},
{
source: index.ttAdapter({hitsPerPage: 10}),
displayKey: 'text'
}
).on('keyup', this, function (event) {
if (event.keyCode == 13) {
$('#typeahead-algolia').typeahead('close');
window.location.href = "/?keyword="+encodeURIComponent($('#typeahead-algolia').val());
}
});
$('.typeahead').bind('typeahead:select', function(ev, suggestion) {
window.location.href = suggestion.card_url;
});
});
So my question is:
This code works perfectly. But how to add condition for asked_to contains i7683yiq7r8998778346q686 in above javascript to filter out result.

Answer 1

You can use a facet filter on the asked_to attribute in your query.
You first need to declare the attribute asked_to as an attribute for faceting in your index settings and then pass asked_to:i7683yiq7r8998778346q686 as a facet filter in your query via the facetFiltersquery parameter.
When your index settings are changed, you can change your source to add the facetFilters parameter:
$('#typeahead-algolia').typeahead(
{
hint: false,
highlight: true,
minLength: 1
},
{
source: index.ttAdapter({hitsPerPage: 10, facetFilters: "asked_to:i7683yiq7r8998778346q686"}),
displayKey: 'text'
}
).on('keyup', this, function (event) {
if (event.keyCode == 13) {
$('#typeahead-algolia').typeahead('close');
window.location.href = "/?keyword="+encodeURIComponent($('#typeahead-algolia').val());
}
});