This is a very early release, this package is far from being complete and provide minimal functionnalities as of today.

composer require makinacorpus/autocomplete-bundle

This autocomplete widget works with the select2 library, it is your responsability to ensure the javascript is correctly loaded for it to work.

You also need jQuery installed (sorry, this might change later).

Register the routing.yml file in your app/routing.yml file:

autocomplete:
    resource: "@AutocompleteBundle/Resources/config/routing.yml"
    prefix: /

And the associated form theme in your app/config.yml file:

twig:
    debug:            "%kernel.debug%"
    strict_variables: false
    form_themes:
        # ...
        - "AutocompleteBundle:Form:fields.html.twig"

And it should probably work.

First, implement an MakinaCorpus\AutocompleteBundle\Autocomplete\AutocompleteSourceInterface class, that is meant to reflect the business objects in which to autocomplete.

Then just use the MakinaCorpus\AutocompleteBundle\Form\Type\TextAutocompleteType form type in your own form builders, and set the source class name as the source parameter for the form type.