我有一个Rails 7.0.4应用程序，其中有一个简单的TranscriptionController，当提交包含标题、描述和音频文件的表单后，会启动一个Action Job来使用openai gem处理音频转录。尽管生成的URL指向我想转码的音频文件，我仍然不断收到此错误：Errno::ENOENT (No such file or directory @ rb_sysopen
这是Transcription模型：
class Transcription < ApplicationRecord has_one_attached :audio_file def audio_file_url Rails.application.routes.url_helpers.url_for(audio_file) if audio_file.attached? end end这是TranscriptionController中的create操作：
def create @transcription = Transcription.new(transcription_params) respond_to do |format| if @transcription.save # 使用OpenAI的Whisper API处理音频文件 TranscriptionJob.perform_later(@transcription) format.html { redirect_to transcription_url(@transcription), notice: "转录已成功创建。稍后查看转录文本。" } format.json { render :show, status: :created, location: @transcription } else format.html { render :new, status: :unprocessable_entity } format.json { render json: @transcription.errors, status: :unprocessable_entity } end end end这是最重要的部分，即名为transcription_job.rb的Active Job：
class TranscriptionJob < ApplicationJob queue_as :default require 'openai' def perform(transcription) # 稍后执行某些操作 client = OpenAI::Client.new(access_token: Rails.application.credentials.dig(:openai, :api_key)) logger.info "SMC DEBUG: OpenAI Key set" file_path = transcription.audio_file_url logger.info "SMC DEBUG: Audio file path is: #{file_path}" response = client.transcribe( parameters: { model: "whisper-1", file: File.open(file_path, "rb") }) logger.info "SMC DEBUG: transcription sent" # 使用返回的文本更新转录对象 transcription.transcriptionresult = response['text'] logger.info "SMC DEBUG: TranscriptionResult is: #{transcription.transcriptionresult}" # 保存更新后的转录对象 transcription.save endend这是Action Job相关的Rails日志反馈：
15:21:58 web.1 | [ActiveJob] Enqueued ActiveStorage::AnalyzeJob (Job ID: 7b3600ec-ee85-4be6-8faa-18f467fc719a) to Async(default) with arguments: #<GlobalID:0x00000001073c6880 @uri=#<URI::GID gid://transcriptionservice/ActiveStorage::Blob/59>>15:21:58 web.1 | [ActiveJob] Enqueued TranscriptionJob (Job ID: 974566f7-7d83-48ee-b3ae-d6f02a006efb) to Async(default) with arguments: #<GlobalID:0x00000001073d7ba8 @uri=#<URI::GID gid://transcriptionservice/Transcription/61>>15:21:58 web.1 | Redirected to http://localhost:3000/transcriptions/6115:21:58 web.1 | Completed 302 Found in 60ms (ActiveRecord: 13.1ms | Allocations: 24625)15:21:58 web.1 | 15:21:58 web.1 | 15:21:58 web.1 | Started GET "/transcriptions/61" for ::1 at 2023-05-14 15:21:58 -040015:21:58 web.1 | [ActiveJob] [ActiveStorage::AnalyzeJob] [7b3600ec-ee85-4be6-8faa-18f467fc719a] ActiveStorage::Blob Load (2.2ms) SELECT "active_storage_blobs".* FROM "active_storage_blobs" WHERE "active_storage_blobs"."id" = $1 LIMIT $2 [["id", 59], ["LIMIT", 1]]15:21:58 web.1 | [ActiveJob] [ActiveStorage::AnalyzeJob] [7b3600ec-ee85-4be6-8faa-18f467fc719a] Performing ActiveStorage::AnalyzeJob (Job ID: 7b3600ec-ee85-4be6-8faa-18f467fc719a) from Async(default) enqueued at 2023-05-14T19:21:58Z with arguments: #<GlobalID:0x0000000107426ac8 @uri=#<URI::GID gid://transcriptionservice/ActiveStorage::Blob/59>>15:21:58 web.1 | [ActiveJob] [ActiveStorage::AnalyzeJob] [7b3600ec-ee85-4be6-8faa-18f467fc719a] Disk Storage (0.6ms) Downloaded file from key: 49zqmrx6g54pk1pzuc3y2uyvtiyx15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] Transcription Load (0.3ms) SELECT "transcriptions".* FROM "transcriptions" WHERE "transcriptions"."id" = $1 LIMIT $2 [["id", 61], ["LIMIT", 1]]15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] Performing TranscriptionJob (Job ID: 974566f7-7d83-48ee-b3ae-d6f02a006efb) from Async(default) enqueued at 2023-05-14T19:21:58Z with arguments: #<GlobalID:0x000000010743ca80 @uri=#<URI::GID gid://transcriptionservice/Transcription/61>>15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] SMC DEBUG: OpenAI Key set15:21:58 web.1 | Processing by TranscriptionsController#show as TURBO_STREAM15:21:58 web.1 | Parameters: {"id"=>"61"}15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] ActiveStorage::Attachment Load (7.0ms) SELECT "active_storage_attachments".* FROM "active_storage_attachments" WHERE "active_storage_attachments"."record_id" = $1 AND "active_storage_attachments"."record_type" = $2 AND "active_storage_attachments"."name" = $3 LIMIT $4 [["record_id", 61], ["record_type", "Transcription"], ["name", "audio_file"], ["LIMIT", 1]]15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] ↳ app/models/transcription.rb:5:in `audio_file_url'15:21:58 web.1 | Transcription Load (1.7ms) SELECT "transcriptions".* FROM "transcriptions" WHERE "transcriptions"."id" = $1 LIMIT $2 [["id", 61], ["LIMIT", 1]]15:21:58 web.1 | ↳ app/controllers/transcriptions_controller.rb:83:in `set_transcription'15:21:58 web.1 | Rendering layout layouts/application.html.erb15:21:58 web.1 | Rendering transcriptions/show.html.erb within layouts/application15:21:58 web.1 | Rendered transcriptions/_transcription.html.erb (Duration: 0.0ms | Allocations: 25)15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] ActiveStorage::Blob Load (1.4ms) SELECT "active_storage_blobs".* FROM "active_storage_blobs" WHERE "active_storage_blobs"."id" = $1 LIMIT $2 [["id", 59], ["LIMIT", 1]]15:21:58 web.1 | Rendered transcriptions/show.html.erb within layouts/application (Duration: 1.1ms | Allocations: 843)15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] ↳ app/models/transcription.rb:5:in `audio_file_url'15:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] SMC DEBUG: Audio file path is: http://localhost:3000/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBRQT09IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--495ff1b4e7c2001a5ca50886bfd85e2ad6847c7b/test_audio.mp315:21:58 web.1 | [ActiveJob] [TranscriptionJob] [974566f7-7d83-48ee-b3ae-d6f02a006efb] Error performing TranscriptionJob (Job ID: 974566f7-7d83-48ee-b3ae-d6f02a006efb) from Async(default) in 25.03ms: Errno::ENOENT (No such file or directory @ rb_sysopen - http://localhost:3000/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBRQT09IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--495ff1b4e7c2001a5ca50886bfd85e2ad6847c7b/test_audio.mp3):当我在浏览器中输入该URL时，它会下载正确的文件。
我尝试使用以下代码来引用路径而不是URL：
file_path = Rails.application.routes.url_helpers.rails_blob_path(transcription.audio_file, only_path: true)但这会导致类似的错误，指向路径而不是URL：
15:38:35 web.1 | [ActiveJob] [TranscriptionJob] [854d3393-ed0b-41b7-8f5f-7d6469feb8a1] Error performing TranscriptionJob (Job ID: 854d3393-ed0b-41b7-8f5f-7d6469feb8a1) from Async(default) in 134.93ms: Errno::ENOENT (No such file or directory @ rb_sysopen - /rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBRUT09IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--f6270379699bf876802dd28de4cb4414cc7f96ba/test_audio.mp3):我不知道如何解决这个问题。我希望能从智囊团中找到答案。
回答：
感谢@Chiperific 指引我查阅这篇边缘指南：https://edgeguides.rubyonrails.org/active_storage_overview.html#downloading-files 这帮助我重写了代码如下。关键是要先将文件下载到系统的临时文件位置，然后在openai API中指向该本地路径。
class TranscriptionJob < ApplicationJob queue_as :default require 'openai' def perform(transcription) # 提供openai API密钥并初始化openai客户端实例 client = OpenAI::Client.new(access_token: Rails.application.credentials.dig(:openai, :api_key)) # 初始化transcriptionresult变量 transcription.transcriptionresult = '' # 必须先将文件下载到临时存储位置，然后再使用openai API提交。 transcription.audio_file.open do |file| # 我在应用程序根目录下创建了一个名为“transcribe”的文件夹/tmp system '/tmp/transcribe', file.path response = client.transcribe( parameters: { model: "whisper-1", file: File.open(file.path, "rb") }) # 将transcriptionresult设置为openai转录生成的response['text']。 transcription.transcriptionresult = response['text'] # 保存更新后的转录对象 transcription.save end endend