CODEWITHSUNDEEP
javascriptjqueryautocompletetypeahead.jsbloodhound
tim peterson
tim peterson

Reputation: 24305

Switch between remote and local sources with Typeahead.js/Bloodhound.js

I've played around with every setting I can think of, e.g., .clear() and .typeahead('destroy'), and once I've set the source as remote I can't make the typeahead use a local source.

Any thoughts?

Here's the code below that gets called onclick:

var create_typeahead = function(is_remote, titles){

  filters_typeahead.typeahead('destroy');

  if(is_remote){
        var remote_url = titles;
        var titles = new Bloodhound({
        queryTokenizer: Bloodhound.tokenizers.whitespace,
        datumTokenizer: Bloodhound.tokenizers.whitespace,
            remote: {
                url: remote_url,
                q=%QUERY',
                wildcard: '%QUERY'
            }
        });
  }
  else{
        var titles0 = titles;
        var titles = new Bloodhound({
        queryTokenizer: Bloodhound.tokenizers.whitespace,
        datumTokenizer: Bloodhound.tokenizers.whitespace,
            local: titles0
        });    
  }

  titles.initialize(); 

  filters_typeahead.typeahead({
    highlight: true,
    minLength: 2,

    },
    {
      name: 'titles',
      displayKey: 'name',
      source: titles,
      templates: {
        suggestion: function(data) {
            return '<div>' + data.name + '</div>';
        }
    }
});

};

Upvotes: 0

Views: 898

Answers (1)

trenthaynes
trenthaynes

Reputation: 1678

My answer is a little more involved than yours, but hopefully it will point you in the right direction.

When you want to change a remote source using bloodhound, you will have to clear the bloodhound object and reinitialize it.

Here I am creating an initializing a bloodhound instance:

var taSource = new Bloodhound({
  datumTokenizer: Bloodhound.tokenizers.obj.whitespace('Value'),
  queryTokenizer: Bloodhound.tokenizers.whitespace,
  identify: function(obj) {
    return obj.Value;
  },
  remote: remoteSrc
});

taSource.initialize(true);

In the logic to switch I call both clear() and initialize(true), passing true for the reinitialize paramter:

taSource.clear();
taSource.initialize(true);

I handle changing the URL in the prepare method that is available as part of the remote object.

prepare: function(query, settings) {
  settings.url = urlRoot + '/' + whichType + '?q=' + query;
  console.log(settings.url);
  return settings;
},

Here is a full example show how I handle it.

Upvotes: 1

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