_comments.html.haml

=render @memory_page.approved_comments
= simple_form_for [@memory_page, Comment.new], html: {class: 'form-inline'} do |f|
  .form-inputs
    .row
      .col-md-12
        = f.input :comment, label: "Add Your Comment", input_html: {class: 'editable'}
    .row#hidden_form_elements.hide //I have some JS callback that will display these fields once the parent input has been edited
      .col-md-6
        = f.input :name
      .col-md-6
        = f.input :email

  .form-actions
    = f.button :submit, "Create Comment"

comments_controller.rb

class CommentsController < ApplicationController
  before_action :current_resource
  respond_to :html
  layout 'admin'

  def create
    @comment = @memory_page.approved_comments.build(comment_params)
    @comment.user = current_user
    respond_to do |format|
      if @comment.save
        format.html { redirect_to [@memory_page], notice: 'Thank you, your comment has been recorded.' }
        format.json { render action: 'show', status: :created, location: @memory_page }
      else
        format.html { render action: 'new' }
        format.json { render json: @picture.errors, status: :unprocessable_entity }
      end
    end
  end

  def index
    @pending_comments = @memory_page.pending_comments
    @approved_comments = @memory_page.approved_comments
    @flagged_comments = @memory_page.flagged_comments
  end

  def update
    @comment = Comment.find(params[:id])
    @comment.update_attributes(comment_params)
    respond_with @comment
  end

  private
  def current_resource
    @memory_page = MemoryPage.friendly.find(params[:memory_page_id]) if params[:memory_page_id]
  end

  def comment_params
    params.require(:comment).permit(:title, :comment, :role, :name, :email)
  end
end

memory_page.rb

class MemoryPage < ActiveRecord::Base
  extend FriendlyId
  resourcify

  has_many :pictures
  accepts_nested_attributes_for :pictures, :reject_if => :all_blank, :allow_destroy => true

  acts_as_commentable :pending, :approved, :flagged
...
end