这似乎很容易做到,基本上我将 Devise 用于管理目的,因此每个注册用户都可以创建一个链接到他们的帐户的产品/图形,然后将该产品与另一个用户进行交易。
Class User
rolify
:recoverable, :rememberable, :trackable, :validatable
attr_accessible :role_ids, :as => :admin
attr_accessible :email, :password, :password_confirmation, :remember_me
has_many :trades
has_many :figures, :through => :trades
accepts_nested_attributes_for :trades
Class Figure
attr_accessible :image_url, :name, :series, :figure_id
has_many :trades
has_many :users, :through => :trades
accepts_nested_attributes_for :trades
Class Trade
attr_accessible :figure_id, :user_id
belongs_to :user
belongs_to :figure
贸易管制员
def new
@trade = Trade.new
end
def create
@trade = current_user.figures.build(params[:trade])
end
贸易表格
<%= form_for(@trade) do |f| %>
<div class="field">
<% Figure.all.each do |figure| %>
# Create a list of figurines radio buttons
<%= f.radio_button :figure_id, figure.id, :checked => (params[:figure_id] == nil ? false : params[:figure_id]) %>
# Link the figures thumbnail to the radio button
<%= f.label :figure_id, image_tag(figure.image_url, :size => "40x58", :alt => figure.name ), :value => "#{figure.id}" %>
<% end %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
这是参数
{"utf8"=>"✓",
"authenticity_token"=>"lo+RWOLxGhPIP1pmJhk9v+vetO7cGEKGY844egaQ6A0=",
"trade"=>{"figure_id"=>"12"},
"commit"=>"Create Trade"}
这是我遇到的问题:未知属性:figure_id
为什么我会收到此错误?