Return a 404 response If @event is Not Found

[mstruve]

In the events controller we lookup the requested event. However, since we are using find_by if the event is not found we simply try to load the view with a nil @event which leads to the error below

def show
  @event = Event.find_by(slug: params[:id])
end

Honeybadger: https://app.honeybadger.io/fault/66984/b5b494606dbf78f0e09c009ea5e1e627
Error:

ActionView::Template::Error: undefined method `title' for nil:NilClass
show.html.erb  2 block in _app_views_events_show_html_erb__3248125032052569105_140759860(...)
[PROJECT_ROOT]/app/views/events/show.html.erb:2:in `block in _app_views_events_show_html_erb__3248125032052569105_140759860'
1 <%= content_for :page_meta do %>
2   <% title "#{@event.title} - DEV" %>
3   <link rel="canonical" href="https://dev.to/<%= @event.slug %>" />
4   <meta name="description" content="dev.to | Events">

In the event that an @event is not found we should return a not_found status. ApplicationController has a handy not_found method that you can use to do this. I think you will want to implement a solution similar to this one.

[Zeko369]

Hey, I'd like to work on this.

[mstruve]

Sounds great! Thank you!!!