RSpec 控制器测试嵌套的强参数

Question

我可能会也可能不会在 RSpec 代码中发现一个错误，即在使用 Accepts_nested_attributes_for 时，它不允许它根据需要发布嵌套属性。

这是我的控制器测试：

it 'attaches a file to document' do
  post :create, {
    app_id: @app1.id,
    document: {
      recipient_id: @app2.id,
      delivery_service: 'default',
      attachments_attributes: {
        0 => {
          attachment: fixture_file_upload('files/document.json', 'application/json')
        }
      }
    },
    format: 'json'
  }

  attachment = assigns(:document).attachments.first
  attachment.exists?.should be_true
  attachment.url.should match 'amazon'
end

这是文档控制器的强参数：

private

def document_params
  params.require(:document).permit(
    :recipient_id,
    :delivery_service,
    :document_id,
    :document_type,
    attachments_attributes:
      [:attachment, :attachment_file_name, :attachment_file_size, :attachment_content_type, :attachment_updated_at]
  )
end

当测试发布到控制器时，附件属性会被忽略，因为它无法识别 0 键。但这就是属性应该是这样的，并且它可以实时工作。

当我取出 0 键并将其留在测试中时：

attachments_attributes: {
  attachment: fixture_file_upload('files/document.json', 'application/json')
}

我收到undefined method '[]' for Tempfile

这是从我的控制器开始的回溯：

# ~/.rvm/gems/ruby-2.0.0-p0/gems/rack-test-0.6.2/lib/rack/test/uploaded_file.rb:40:in `method_missing'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/nested_attributes.rb:452:in `block in assign_nested_attributes_for_collection_association'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/nested_attributes.rb:452:in `map'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/nested_attributes.rb:452:in `assign_nested_attributes_for_collection_association'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/nested_attributes.rb:339:in `attachments_attributes='
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/attribute_assignment.rb:42:in `public_send'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/attribute_assignment.rb:42:in `_assign_attribute'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/attribute_assignment.rb:53:in `block in assign_nested_parameter_attributes'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/attribute_assignment.rb:53:in `each'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/attribute_assignment.rb:53:in `assign_nested_parameter_attributes'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/attribute_assignment.rb:33:in `assign_attributes'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/core.rb:192:in `initialize'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/inheritance.rb:27:in `new'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/inheritance.rb:27:in `new'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/reflection.rb:189:in `build_association'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/associations/association.rb:242:in `build_record'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/associations/collection_association.rb:114:in `build'
# ~/.rvm/gems/ruby-2.0.0-p0/gems/activerecord-4.0.0/lib/active_record/associations/collection_proxy.rb:229:in `build'
# ./app/controllers/documents_controller.rb:17:in `create'

nested_attributes.rb 仍然希望 attachments_attributes 被索引，但是 RSpec 正在做的事情不会让它通过强参数。也许它只是直接传递哈希而不是像浏览器那样作为查询字符串？我会继续挖掘。

以前有没有其他人处理过这个问题？谢谢！

• ruby 2.0.0p0（2013-02-24 修订版 39474）[x86_64-darwin12.2.0]
• 导轨 (4.0.0)
• rspec-core (2.14.5)
• rspec-rails (2.14.0)

Answer 1

好吧，伙计们......我的baaad。

属性必须是字符串索引。所以而不是：

  attachments_attributes: {
    0 => {
      attachment: fixture_file_upload('files/document.json', 'application/json')
    }
  }

我必须这样做：

  attachments_attributes: {
    "0" => {
      attachment: fixture_file_upload('files/document.json', 'application/json')
    }
  }

所以是的。 0 应该是“0”。这里没有发现错误。我现在就去角落里坐。