Week 4: Rail Controller and Views, Part 2

Ruby on Rails Intro Rails Tutorial
1
This is a companion discussion topic for the original entry at https://thoughtbot.com/upcase/videos/week-4-rail-controller-and-views-part-2
2

Instead of using Rails 2.3.11 as suggested in the course I am using the latest 4.2.1

I was getting the following error for my create method:

ActiveModel::ForbiddenAttributesError in CardsController#create

So I switched from this create method:

def create
    @deck = find_deck
    @card = @deck.cards.new(params[:card])
    @card.save
    redirect_to @deck
end

to this one and it worked:

def create
      @deck = find_deck
      @card = @deck.cards.new(cards_params)
      @card.save
      redirect_to @deck
end


private

def cards_params
   params.require(:card).permit(:front, :back)
end
3

I might be getting the following error because I’m using a newer version of rails but I’ve been doing exactly what’s on the video.

The error is:
NoMethodError in SessionsController#create
undefined method `[]’ for nil:NilClass

and it points to this line in the create method:

user = User.find_by_email(params[:session][:email])

Anyone knows how I could fix this?

4

I had that error also. I believe that you should use the same email that you used for creating a new user earlier.