```ruby
class WebmentionsController < ApplicationController
  before_action :require_login, only: [:update, :destroy]

  protect_from_forgery except: [:create]

  def index
    webmentions if logged_in?
  end

  def show
    webmention
  end

  def create
    source = params[:source]
    target = params[:target]

    @webmention = Webmention.where(source: source, target: target).first_or_create(source: source, target: target)

    if @webmention.save
      if params[:referer] == Settings.site.url
        redirect_to webmention_path(@webmention)
      else
        render text: webmention_url(@webmention), status: :accepted
      end
    else
      head :bad_request
    end
  end

  def update
    if webmention.verify
      redirect_to @webmention
    else
      redirect_to webmentions_path
    end
  end

  def destroy
    webmention.destroy

    redirect_to webmentions_path
  end

  private

  def webmention_params
    params.permit(:source, :target, :referer)
  end

  def webmentions
    @webmentions ||= Webmention.all.order('created_at DESC')
  end

  def webmention
    @webmention ||= Webmention.find(params[:id])
  end
end
```

Remove logged_in? restriction on grabbing webmentions. Solves a problem where the RSS feed would blow up when visited by an unauthenticated user.
user
```ruby
class WebmentionsController < ApplicationController
  before_action :require_login, only: [:update, :destroy]

  protect_from_forgery except: [:create]

  def index
    webmentions
  end

  def show
    webmention
  end

  def create
    source = params[:source]
    target = params[:target]

    @webmention = Webmention.where(source: source, target: target).first_or_create(source: source, target: target)

    if @webmention.save
      if params[:referer] == Settings.site.url
        redirect_to webmention_path(@webmention)
      else
        render text: webmention_url(@webmention), status: :accepted
      end
    else
      head :bad_request
    end
  end

  def update
    if webmention.verify
      redirect_to @webmention
    else
      redirect_to webmentions_path
    end
  end

  def destroy
    webmention.destroy

    redirect_to webmentions_path
  end

  private

  def webmention_params
    params.permit(:source, :target, :referer)
  end

  def webmentions
    @webmentions ||= Webmention.all.order('created_at DESC')
  end

  def webmention
    @webmention ||= Webmention.find(params[:id])
  end
end
```
assistant