ajax rails form_with submits but only after page reload - ruby-on-rails

Question

I've had an existing comment form on a resource show.html.erb that I want to be added to the show page without having to reload the entire page. I understand that with ajax via the 'form_with' form, this should be entirely possible.
My issue is that whilst the form does create a new comment, it only appears after I refresh the page.
I also get the following error.
ArgumentError (too few arguments):
app/controllers/comments_controller.rb:18:in 'format'
app/controllers/comments_controller.rb:18:in 'create'
comments_controller
class CommentsController < ApplicationController
before_action :load_commentable
before_action :authenticate_user!
before_action :comment_auth, only: [:edit, :update, :destroy]
...
def create
#comment = #commentable.comments.new(allowed_params)
#comment.user_id=current_user.id if current_user
if #comment.save
format.html { redirect_to #commentable, notice: "Comment added." }
format.js
else
render 'edit'
end
...
views/comments/create.js.coffee
comment = document.getElementById("comment")
comment.innerHTML = "<%= j render(#comment) %>"
views/comments/_form.html.erb
<%= form_with(model: [#commentable, #comment]) do |f| %>
<% if #comment.errors.any? %>
<div class="error_messages">
<h2>Please correct the following errors.</h2>
<ul>
<% #comment.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<p>
<strong><%= f.label :name, :class=>'form-label' %></strong><br>
<%= f.text_field :name, value: current_user.fname, readonly: true, :class=>'form-control' %>
</p>
<p>
<strong><%= f.label :title, :class=>'form-label' %></strong><br>
<%= f.text_field :title, :class=>'form-control' %>
</p>
<p>
<strong><%= f.label :review, :class=>'form-label' %></strong><br>
<%= f.text_area :body, :class=>'form-control', rows: 5 %>
</p>
<p>
<%= f.submit :class=>'btn btn-success' %>
</p>
<% end %>

Answer 1

For me, I needed
<%= form_with(model: #message, method: :post, local: true) do |f| %>
local: true was necessary. All other combos didn't work remote: true, remote: false, local: false

Answer 2

as you know, form_with it's a remote form, you should not use redirect_to there. Please remove your block
if #comment.save
format.html { redirect_to #commentable, notice: "Comment added." }
format.js
else
render 'edit'
end
replace it to
if #comment.save
#status = "success"
end
And you can add a notice message to your views/comments/create.js.erb (it's not .js.coffee) with condition of #status (failed/success).
Hope this helps.