Search code examples
symfonysymfony-formsfosrestbundle

Symfony2: Use different form types in a collection based on sent data

I have several entities that inherit from a base Widget.

In a form I have the field widgets which is a collection. This form is based on an entity, which has a 1:n relationship to Widget. What I want to do is (based on the sent data in widgets) to create a specific subclass to validate and create the actual object.

In the form I defined the field like this:

$builder->add('widgets', 'collection', array(
    'type' => new WidgetType(),
    'allow_add' => true
));

So for example I have two subsclasses, ImageWidget and MapWidget. I created FormTypes for these two entities and now the client is sending the following data (I am using FOSRestBundle):

...
"widgets": [
    {
        "widget_type": "map",
        "stationId": 543647
    },
    {
        "widget_type": "image",
        "image": "data:image/png;data,...."
    }
]

And based on the property widget_type (which is the property used by Doctrine to differentiate between the widget types in the database), I want the form to create a MapWidgetType for the first entry and a ImageWidgetType for the second one.

Is this possible to to?

I am using Symfony 2.5

Solution

  • This bundle should solve your problem: https://github.com/infinite-networks/InfiniteFormBundle#polycollection