How to keep a treeview node active without allowing deactivation?

[pengyuan-max]

I would like to configure the treeview so that once a node becomes active, it cannot be deactivated (at least one item should always remain active).

Is there a built-in way to achieve this behavior, or do I need to implement a custom solution?

[jourdain]

I guess for that one, you will have to not use the v-model but instead use the modelValue and event separately so you can code your own logic for updating the modelValue as you see fit.

[pengyuan-max]

I guess for that one, you will have to not use the v-model but instead use the modelValue and event separately so you can code your own logic for updating the modelValue as you see fit.
Proposed reply to author：

Thanks for the hint earlier! I think I should clarify:

I’m using Vue2 with Vuetify2 (via trame-vuetify).

In my case, I’m not using the checkbox selection (value / modelValue), but rather the activatable mode.

My goal is to ensure that once a node is active, it cannot be deactivated by clicking again — at least one item should always remain active.

[jourdain]

What I said is still totally valid. You need to handle properties and events on your own to ensure the logic you want.