Easyadmin entity filter "Is one of" in many-to-one relationship

When I have a many-to-many relationship Easyadmin adds this as a filter with two inputs. In the first I can select equals/not equals and in the second I can enter multiple values.

When I have a many-to-one relatioship Easyadmin also adds this as a filter with two inputs. The first is the same (equals/not equals) but in the second I can select only one value.

Is there a way to tell Easyadmin that I want to select multiple items in the one-to-many relationship?

Example:

My users have a property "state". One-to-many. And now I want to filter for users that live in either state a, state b, or state c.

I'm guessing you want to use an EntityFilter to filter on your OneToMany relation.

EntityFilter use a symfony EntityType so you can use the form option multiple set to true.

To modify a form option with easyadmin you can use the setFormTypeOption method, and to modify an option on your EntityType you can use value_type_options.

So just use it like this:

return $filters
            //...
            ->add(EntityFilter::new('state', 'State')
                ->setFormTypeOption('value_type_options.multiple', true));