我一直在试图弄清楚为什么当我的代码似乎正确时我不断收到批量分配错误。我使用了错误的语法吗？我真的很感激任何测试版，我一直在尝试调试我的应用程序中如此简单的部分，它真的阻碍了我的进步。我有以下内容：
控制器
class ProductsController < ApplicationController
def new
@product =Product.new
end
def create
@product = Product.new(params[:product])
end
end
楷模
class Product < ActiveRecord::Base
attr_accessible :name, :colors_attributes
has_many :colors
accepts_nested_attributes_for :colors, allow_destroy: true
end
class Color < ActiveRecord::Base
attr_accessible :name, :product_id
belongs_to :product
end
迁移
class CreateProducts < ActiveRecord::Migration
def change
create_table :products do |t|
t.string :name
t.timestamps
end
end
end
class CreateColors < ActiveRecord::Migration
def change
create_table :colors do |t|
t.integer :product_id
t.string :name
t.timestamps
end
end
end
意见
产品/new.html.erb
<%= render "form" %>
产品/_form.html.erb
<%= form_for @product do |f| %>
<%= f.text_field :name %>
<%= f.fields_for :color do |c| %>
<%= render 'color_fields', f: c %>
<% end %>
<%= f.button :submit %>
<% end %>
产品/_color_fields.html.erb
<%= f.text_field :name %>
错误：
ActiveModel::MassAssignmentSecurity::Error in ProductsController#create
Can't mass-assign protected attributes: color
完整跟踪：
activemodel (3.2.3) lib/active_model/mass_assignment_security/sanitizer.rb:48:in `process_removed_attributes'
activemodel (3.2.3) lib/active_model/mass_assignment_security/sanitizer.rb:20:in `debug_protected_attribute_removal'
activemodel (3.2.3) lib/active_model/mass_assignment_security/sanitizer.rb:12:in `sanitize'
activemodel (3.2.3) lib/active_model/mass_assignment_security.rb:230:in `sanitize_for_mass_assignment'
activerecord (3.2.3) lib/active_record/attribute_assignment.rb:75:in `assign_attributes'
activerecord (3.2.3) lib/active_record/base.rb:498:in `initialize'
app/controllers/products_controller.rb:7:in `new'
app/controllers/products_controller.rb:7:in `create'
actionpack (3.2.3) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.2.3) lib/abstract_controller/base.rb:167:in `process_action'
...
任何见解将不胜感激