How to use simple_form_for with phlex?

[janpeterka]

Maybe stupid question, but I didn't manage to use simple_form_for helper to phlex views.
I tried code like this:

 simple_form_for(report, url:, method:, data: {controller: "report-form", "report-form-sidebar-outlet": "#sidebar"}) do |f|
        Heading "B.1 Celkový popis území a stavby", size: :h2
        report.class::ATTRIBUTES_B_1.each do |attribute|
          f.input attribute, as: :rich_text_area, input_html: { data: { action: "focus->report-form#scroll", report_form_attribute_param: "project_reports_building_permits_report_b_#{attribute}" } }
        end
      end

, which doesn't render the inputs (tried using both register_output_helper and register_value_helper for simple_form_for).

Then I tried changing to render f.input ..., which renders plain html, even when adding safe_html to it.

Is it possible to use simple_form_for in Phlex view?

[joeldrapper]

It really depends how simple form is built, but I expect it’s similar to form_with, which is a nightmare to support.

It might just work if you register a builder yielding helper like we do for form_with.

register_builder_yielding_helper :simple_form_for

The simplest option might be to wrap simple form in partials and render those from Phlex.

[joeldrapper]

What this will do is wrap the builder that simple_form_for yields in a Phlex::Rails::Builder object. Methods sent to this object are delegated to the underlying builder. If it returns an ActiveSupport::SafeBuffer, the return value is pushed to the output buffer. If it returns anything else, the output is just returned.

https://github.com/yippee-fun/phlex-rails/blob/4c17192bceca69b894a85179a7cea8126851b99a/lib/phlex/rails/builder.rb#L34-L39

[janpeterka]

Amazing, thank you so much for such a quick reaction, register_builder_yielding_helper works!

[joeldrapper]

Brilliant. We should probably document this method if it works and is useful for other things. Up to this point, it’s just been an implementation detail of the form_with and form_for support.