emptyOption for controller filters

[hambern]

Expected behavior

Just like I can add an emptyOption to fields in the backend forms i would like to be able to filter the fields with an emptyOption as well. Like this:

status:
        label: acme.plugin::lang.string.status
        modelClass: Acme\Plugin\Models\Status
        conditions: status_id in (:filtered)
        emptyOption: acme.plugin::lang.string.none

Actual behavior

No empty option shows up

Reproduce steps

1. Add an emptyOption string to a filter
2. See the result

October build

423

[LukeTowers]

Mind explaining a bit more how this would work?

[hambern]

Not at all. Like this:

Lets say I have a status_id column in the database. It could either be an integer or NULL (or 0). That relates to another table's id number.

Then Lets say the relation looks like this Stuff –> belongsTo -> Status.

This can be done as a field in the backend like this:

status:
        label: 'maker.plugin::lang.string.status'
        type: relation
        emptyOption: 'maker.plugin::lang.string.none'

Now I want to be able to filter the list based on this. Including the Stuff with status_id NULL or 0. And preferably like this:

status:
        type: group
        label: 'maker.plugin::lang.string.status'
        modelClass: Maker\Plugin\Models\Status
        conditions: status_id in (:filtered)
        emptyOption: 'maker.plugin::lang.string.none'

Than I want it to list the Statuses like it does right now, but add an emptyOption that adds the string maker.plugin::lang.string.none to the list and adds null (or 0) to the (:filtered). Look at it as the inversion of the field.

How to this technically I have no idea ;) Explained my self enough?

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[daftspunk]

This was easy enough to implement so I just did it. You can expect it in the next update. Thanks @hambern 🙏