ruby-on-rails-5 - TypeError（无法投射文件）：Rails Carrierwave 文件上传

Question

我正在使用Carrierwave和 Rails 上传文件时出现以下错误。

在 2018 年 8 月 6 日 10:46:43 +0530 InputFilesController#upload_client_input_file as / 参数处理 192.168.1.101 开始 POST "/upload_client_input_file?project_id=7": {"file"=>#, @original_filename="input. csv.part_1.1", @content_type="application/octet-stream", @headers="Content-Disposition: form-data; name=\"file\"; filename=\"input.csv.part_1.1\ "\r\nContent-Type: application/octet-stream\r\n">, "project_id"=>"7"} Completed 500 Internal Server Error in 27ms (ActiveRecord: 7.9ms)
TypeError (can't cast File) :
app/controllers/input_files_controller.rb:61:in `upload_client_input_file'

我的型号代码：

class InputFile < ApplicationRecord  
  belongs_to :project
  mount_uploader :file, AvatarUploader
end

我的上传代码：

class AvatarUploader < CarrierWave::Uploader::Base
  # Include RMagick or MiniMagick support:
  # include CarrierWave::RMagick
  # include CarrierWave::MiniMagick

  # Choose what kind of storage to use for this uploader:
  storage :file
  # storage :fog

  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url(*args)
  #   # For Rails 3.1+ asset pipeline compatibility:
  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  #
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
  # process scale: [200, 300]
  #
  # def scale(width, height)
  #   # do something
  # end

  # Create different versions of your uploaded files:
  # version :thumb do
  #   process resize_to_fit: [50, 50]
  # end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  # def extension_whitelist
  #   %w(jpg jpeg gif png)
  # end

  # Override the filename of the uploaded files:
  # Avoid using model.id or version_name here, see uploader/store.rb for details.
  # def filename
  #   "something.jpg" if original_filename
  # end
end

我的控制器代码：

def upload_client_input_file
    params.permit!
    project_id = params["project_id"]
    tempfile = params["file"].tempfile      
    file = CSV.read(tempfile)
    input_file_id = InputFile.find_or_create_by(batch_name: "Test", flag: true, project_id: project_id, file: File.open(tempfile,"r")).id
end

标签： ruby-on-rails-5carrierwave