Undefined method/instance variable

Question

I'm learning RoR and working on a simple app to share posts. My trouble is creating the posts and displaying them on a separate page(not sure where my error is). When a "user" goes to post an "event" I get an undefined method:

undefined method `model_name' for NilClass:Class 12: <%= render @events %>

I thought I had defined the method properly, but I guess not.

Thanks in advance for any help you can give.

mu is too short · Accepted Answer · 2011-10-14 06:38:21Z

2

I'm guessing that this is the controller in question:

  def create
    @event = current_user.events.build(params[:event])
    if @event.save
      flash[:success] = "Event Shared"
      redirect_to root_path
    #else
    #  render 'pages/about'
    end


    #@event = Event.new         what I had before
    #@title = "Create An Event"
  end

You set @event in there but not @events. Instance variables are created on first use and default to nil so in your view, when you say this:

<%= render @events %>

you're creating @events right there and it will be nil. Perhaps you want:

<%= render @event %>

answered Oct 14, 2011 at 6:38

mu is too short

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3 Comments

Alekx Over a year ago

I first tried singular "@event" and received an error with that as well. The aspect that confuses me is that my user controller here has a singular @user, but it displays on the users index page here

Alekx Over a year ago

This is the error it gives, so I think you are right. Should the :content be defined in the controller? I feel like it's just one correction short of posting. Thanks for your help. Also, my repo is updated to my most current version. undefined method `content' for #<WillPaginate::Collection:0x11083f6d8> Extracted source (around line #6): 3: <div class="details"> 4: <h5><a href="#">Students Vs Food!</a></h5> 5: <p> 6: <%= @event.content %> 7: </p> 8: </div> 9: </div> Trace of template inclusion: app/views/events/show.html.erb

mu is too short Over a year ago

@Alekx: Your UsersController#index has @users. And in EventsController#show, your Event.paginate(:page => params[:page]) returns a list of events when show is normally handling a single event (@event = Event.find(params[:id])).

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