Add hidden field customization support

[excid3]

I needed a way to specify extra attributes on the hidden field. For example, specifying the form attribute to target a specific form on the page.

This adds the ability to specific extra attributes on hidden_field the same way that input works.

  <%= combobox_tag :id, users_path, placeholder: "Search users", hidden_field: {form: :user} %>

[josefarias]

Thanks @excid3! I think the built-in (and undocumented — I really have to get on that 🤦‍♂️) customizable concern should be able to handle this as follows:

<%= combobox_tag :id, users_path do |combobox| %>
  <% combobox.customize_hidden_field form: :user %>
<% end %>

Does that work for you?

[excid3]

I wondered about that. I'm fine using that instead. 👍

[excid3]

On an unrelated note, is there a way to clear the combo box from a turbo_stream action? I have a reset_form action that runs form.reset(), but that doesn't seem to trigger a reset of the combobox.

[josefarias]

@excid3 not currently, but there's been requests for that. I do see us supporting it eventually.

The stopgap solution I've given is to replace the combobox altogether with a fresh one. Hopefully that works as a stopgap solution.

[excid3]

Cool, that's what I figured I'd do for now. 👍