Question

我有一个Campaign模型和一个Category模型。他们彼此之间有很多关系。中间模型是campaign_categories。运动：

class Campaign < ActiveRecord::Base
  attr_accessible :name, :carousel_image, :show_in_carousel, :title, :carousel_description,
                  :video_embed_code, :goal, :end_date, :backer_count, :author_name, :author_photo,
                  :author_description_md, :author_description_html, :description_markdown, :description_html,
                  :funds_description_md, :funds_description_html, :campaign_status_id


  #associations
  has_many :campaign_categories
  has_many :categories, through: :campaign_categories

端

类别：

class Category < ActiveRecord::Base
  attr_accessible :name

  #associations
  has_many :campaign_categories
  has_many :campaigns, through: :campaign_categories
end

Campaign_Category：

class CampaignCategory < ActiveRecord::Base
  attr_accessible :campaign_id, :category_id
  belongs_to :campaign
  belongs_to :category
end

我在campaign.rb中关注了Activeadmin：

ActiveAdmin.register Campaign do

  form :html => { :enctype => 'multipart/form-data'} do |f|
    f.inputs "Campaign Basic Information" do
      f.input :name
      f.input :categories
    end
    f.actions
  end
end

类别在多选框中正确显示。但是我在表单提交时收到以下错误：无法批量分配受保护的属性：category_ids

我尝试在Campaign中调用accepts_nested_attributes_for：类别，但这不起作用。我该如何解决这个问题？感谢。

Answer 1

在Campaign模型中为您的attr_accessible调用添加：category_ids应该这样做

Formtastic通过协会有很多

1 个答案: