Creating a custom DataGrid filter

[Simon Ball]

I'm using MongoDB and trying to recreate the AJAX search using in formMapper but in dataGrid instead. So far:

• Added a service and config parameter for doctrine_mongodb_autocomplete to doctrine_mongodb_filter_types.xml
  

<parameters>
    <parameter key="sonata.admin.odm.filter.type.autocomplete.class">Sonata\DoctrineMongoDBAdminBundle\Filter\AutocompleteFilter</parameter>
</parameters>

<services>
        <service id="sonata.admin.odm.filter.type.autocomplete" class="%sonata.admin.odm.filter.type.autocomplete.class%">
            <tag name="sonata.admin.filter.type" alias="doctrine_mongo_autocomplete" />
        </service>
</services>

• Copied the ModelFilter type to AutocompleteFilter to DoctrineMongoDBAdminBundle/Filter/AutocompleteFilter.php

So far, exactly the same as the ModelFilter except

class AutocompleteFilter extends Filter

• Added an AutocompleteType to admin-bundle/Form/Type/Filter/AutocompleteType.php

So far, exactly the same as namespace Sonata\AdminBundle\Form\Type\ModelAutocompleteType.php

• Added an extra type to the formContractor similar to the one located in the ORM bundle (just in case?)
  

When I try to actually use the filter,  Symfony complains about the unrecognised type though. Please can someone give me a poke in the right direction.

Kind regards

Simon