Question

我在2个资源之间有一对多关联：Discovery和Matter

class Discovery < ActiveRecord::Base
  belongs_to :matter
end

class Matter < ActiveRecord::Base
  has_many :discoveries
end

我的路线文件有：

resources :matters do
  resources :discoveries
end

我的迁移文件如下：

class CreateDiscoveries < ActiveRecord::Migration
  def change
    create_table :discoveries do |t|
      t.string :aws_url
      t.string :upload_file_path
      t.attachment :upload
      t.integer :matter_id
      t.string :direct_upload_url
      t.boolean :processed

      t.timestamps
    end
  end
end

class AddMatterIdToDiscoveries < ActiveRecord::Migration
  def change
    add_index :discoveries, :matter_id
    add_index :discoveries, :processed
  end
end

discoveries_controller.rb

def create
  @matter = Matter.find(params[:matter_id])
  if(params[:url])
    @discovery = Discovery.new
    render "new" and return
  end

  if(params[:discovery][:upload_file_path])
    @discovery = Discovery.new(discovery_params)
    respond_to do |format|
      if @discovery.save
        @discovery.matter = current_user.matters.find(params[:matter_id])
        format.html { render action: :show, notice: 'Discovery was successfully created.' } # matter_url(@discovery.matter_id)
        format.json { render action: 'show', status: :created, location: @discovery }
      else
        format.html { render action: 'new' }
        format.json { render json: @discovery.errors, status: :unprocessable_entity }
      end
      # redirect_to new_document and return
    end
  else
    @discovery = Discovery.new
    render action: 'new', notice: "No file"
  end
end

当我在事务模型matters/3/discoveries/new中创建新发现时，创建了发现，但在控制台中，我认为我应该能够访问Discovery.last.matter，但我得到错误{{ 1}}

我如何展示发现所属的问题？感谢

Answer 1

更改模型后，在控制台中调用reload!（架构更改，运行迁移，添加方法）。

从控制台访问一对多关联

1 个答案: