Ruby on rails 延迟作业-未定义的方法`name'；零级：零级

我正在努力克服这个错误。我有一个控制器动作如下：

def import
    InventoryItem.import_list(params[:file], current_vendor.id)
    redirect_to vendors_dashboard_path, notice: "Inventory Imported"
end

我的课堂教学方法：

class << self
    def import_list(file, vendor_id)
        vendor = Vendor.find(vendor_id)
        SmarterCSV.process(file.path, 
        {:key_mapping => { vendor.import_preference.brand_symbol => :brand,
        vendor.import_preference.product_symbol => :product,
        vendor.import_preference.price_symbol => :price,
        vendor.import_preference.upc_symbol => :upc}}) do |row|

        params = row.first.merge(:store_id => vendor.stores.first.id)
            inventory_item = InventoryItem.create(params)
        end
    end
    handle_asynchronously :import_list
end

相关堆栈跟踪：

/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:50:in `block in initialize'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `yield'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `block in initialize'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `yield'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `block in initialize'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `yield'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `block in initialize'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `yield'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:52:in `block in initialize'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:128:in `yield'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:128:in `accept'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:480:in `block in dump_ivars'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:478:in `each'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:478:in `dump_ivars'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:150:in `visit_Object'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:128:in `accept'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:344:in `block in visit_Array'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:344:in `each'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:344:in `visit_Array'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:128:in `accept'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:467:in `block in emit_coder'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:465:in `each'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:465:in `emit_coder'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:450:in `dump_coder'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:126:in `accept'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych/visitors/yaml_tree.rb:92:in `push'
/Users/myname/.rvm/rubies/ruby-2.0.0-p576/lib/ruby/2.0.0/psych.rb:244:in `dump'
delayed_job (4.0.4) lib/delayed/backend/base.rb:81:in `payload_object='
activerecord (3.2.13) lib/active_record/attribute_assignment.rb:85:in `block in assign_attributes'
activerecord (3.2.13) lib/active_record/attribute_assignment.rb:78:in `each'
activerecord (3.2.13) lib/active_record/attribute_assignment.rb:78:in `assign_attributes'
activerecord (3.2.13) lib/active_record/base.rb:498:in `initialize'
delayed_job (4.0.4) lib/delayed/backend/base.rb:32:in `new'
delayed_job (4.0.4) lib/delayed/backend/base.rb:32:in `enqueue'
delayed_job (4.0.4) lib/delayed/message_sending.rb:12:in `method_missing'
delayed_job (4.0.4) lib/delayed/message_sending.rb:46:in `block in handle_asynchronously'
actionpack (3.2.13) lib/action_controller/metal/implicit_render.rb:4:in `send_action'

---

params[：file]

在保存到数据库以进行延迟的\u作业时，将无法正确封送。不要将

params[：file]

对象作为第一个参数传递，而是传递文件路径：

def import
  InventoryItem.import_list(params[:file].path, current_vendor.id)
  redirect_to vendors_dashboard_path, notice: "Inventory Imported"
end

然后直接在worker方法中使用路径：

class << self
  def import_list(path, vendor_id)
    vendor = Vendor.find(vendor_id)
    SmarterCSV.process(path, {:key_mapping => { vendor.import_preference.brand_symbol => :brand, vendor.import_preference.product_symbol => :product, vendor.import_preference.price_symbol => :price, vendor.import_preference.upc_symbol => :upc}}) do |row|
      params = row.first.merge(:store_id => vendor.stores.first.id)
      inventory_item = InventoryItem.create(params)
    end
  end
  handle_asynchronously :import_list
end

class{vendor.import\u preference.brand\u symbol=>：brand，vendor.import\u preference.product\u symbol=>：product，vendor.import\u preference.upc\u symbol=>：upc}行|
params=row.first.merge（：store_id=>vendor.stores.first.id）
inventory\u item=InventoryItem.create（参数）
结束
结束
异步处理\u：导入\u列表
结束

你能发布你的错误跟踪吗？有错误的服务器日志和一些堆栈跟踪。你能尝试在你的控制器操作中将方法名称更改为

import\u list

吗？也尝试了相同的错误。我想这是错误的原因，因为该方法异步调用时文件参数为空。你能尝试更改吗

handle\u与
.delay
类似
InventoryItem.delay.import\u list（..）
这对我来说很有效。愚蠢的问题，但在params中仅传递文件路径是否仍会将文件本身保留在数据库中？换句话说，这在生产中也可以吗？据我所知，该文件从一开始就不在数据库中。因此DJ将该文件存储在内存中？不，
params[：file]。path
将是光盘上的路径
SmarterCSV.process
从光盘读取
path
中给出的文件。@infused它看起来好像OP在这里的第一条注释有一些验证。一旦web请求返回，该文件就会被删除。因此，工作方法接收的路径不再有效。你是如何把那个文件持久保存到DJ的？
class << self
  def import_list(path, vendor_id)
    vendor = Vendor.find(vendor_id)
    SmarterCSV.process(path, {:key_mapping => { vendor.import_preference.brand_symbol => :brand, vendor.import_preference.product_symbol => :product, vendor.import_preference.price_symbol => :price, vendor.import_preference.upc_symbol => :upc}}) do |row|
      params = row.first.merge(:store_id => vendor.stores.first.id)
      inventory_item = InventoryItem.create(params)
    end
  end
  handle_asynchronously :import_list
end