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POHow to model and create a custom deck of cards in rails?
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copied!<p>I'm trying to model a card game in order to learn Rails. This is different than a standard deck of playing cards in that there can be multiple copies of a card in the deck. I'm running into problems while trying to initialize the deck. So far I've got a basic Card model with various attributes (such as copies_in_deck) but no associations. A DeckCard model which represents the cards in the deck (this is due to having multiples of the same card in the deck):</p> <pre><code>class DeckCard < ActiveRecord::Base belongs_to :card belongs_to :deck end </code></pre> <p>These DeckCards will eventually have attributes reflecting position; such as in discard pile, in draw pile, etc.</p> <p>A Deck model with </p> <pre><code>belongs_to :game has_many :deck_cards </code></pre> <p>I'm trying to inialize the deck and am having various problems. I'm trying the following in Deck</p> <pre><code>def initialize @cards = Card.find(:all) @cards.each do |card| # eventually another loop here on copies_in_deck @deck_cards.build(card) end end </code></pre> <p>When I do <code>Deck.new</code> I get an error on nil.build. Why is @deck_cards nil?</p> <p>I'm using InstantRails2, which has rails 2.0.2. I found <a href="http://zargony.com/2007/09/17/vanishing-records-on-creating-multiple-models-in-one-action/" rel="nofollow noreferrer" title="this link">this article </a> about creating multiple models in one action, so I tried using Deck.create! instead, and got an error about the wrong number of arguments.</p> <p>Any suggestions?</p>

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