我在rails应用程序上创建了一个ruby，我正在使用paperclip来处理我的文件上传。 Paperclip在我的本地机器上工作得很好。但是当我部署到Heroku时，我的视频上传停止了。有谁知道什么是错的。当我尝试上传视频文件名不存在时，我也会收到错误消息。照片上传有效，但不是视频，我使用了回形针嵌套属性和ffmpeg。
上传错误日志：
Paperclip::Error (Asset model missing required attr_accessor for 'video_file_name')
2013-12-02T14:38:16.867747+00:00 app[web.1]: Paperclip::Error (Asset model missing required attr_accessor for 'video_file_name'):
2013-12-02T14:38:16.867747+00:00 app[web.1]: app/controllers/projects_controller.rb:60:in `block in update'
2013-12-02T14:38:16.867747+00:00 app[web.1]: app/controllers/projects_controller.rb:59:in `update'
以下是我的迁移错误：
Migrating to AddAttachmentPhotoToAssets (20131021134721)
== AddAttachmentPhotoToAssets: migrating =====================================
-- change_table(:assets)
-> 0.0273s
== AddAttachmentPhotoToAssets: migrated (0.0276s) ============================
Migrating to AddProjectIdToAssets (20131022082744)
-- add_column(:assets, :project_id, :integer)
PG::DuplicateColumn: ERROR: column "project_id" of relation "assets" already exists
: ALTER TABLE "assets" ADD COLUMN "project_id" integer
-- add_column(:assets, :project_id, :integer)
PG::DuplicateColumn: ERROR: column "project_id" of relation "assets" already exists
: ALTER TABLE "assets" ADD COLUMN "project_id" integer
rake aborted!
PG::DuplicateColumn: ERROR: column "project_id" of relation "assets" already exists
: ALTER TABLE "assets" ADD COLUMN "project_id" integer
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `exec'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `block in execute'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/abstract_adapter.rb:425:in `block in log'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/abstract_adapter.rb:420:in `log'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/database_statements.rb:127:in `execute'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/abstract/schema_statements.rb:360:in `add_column'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/connection_adapters/postgresql/schema_statements.rb:379:in `add_column'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:625:in `block in method_missing'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:597:in `block in say_with_time'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:597:in `say_with_time'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:617:in `method_missing'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:383:in `method_missing'
/app/db/migrate/20131022082744_add_project_id_to_assets.rb:2:in `<class:AddProjectIdToAssets>'
/app/db/migrate/20131022082744_add_project_id_to_assets.rb:1:in `<top (required)>'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:718:in `load_migration'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:714:in `migration'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:708:in `disable_ddl_transaction'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:1012:in `use_transaction?'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:922:in `rescue in block in migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:919:in `block in migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:916:in `each'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:916:in `migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:764:in `up'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/migration.rb:742:in `migrate'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.0/lib/active_record/railties/databases.rake:42:in `block (2 levels) in <top (required)>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)
这是我的表格：
create_table "assets", force: true do |t|
t.datetime "created_at"
t.datetime "updated_at"
t.string "photo_file_name"
t.string "photo_content_type"
t.integer "photo_file_size"
t.datetime "photo_updated_at"
t.integer "project_id"
t.string "video_file_name"
t.string "video_content_type"
t.integer "video_file_size"
t.datetime "video_updated_at"
end
add_index "projects", ["permalink"], name: "index_projects_on_permalink", using: :btree
create_table "settings", force: true do |t|
t.string "title"
t.text "description"
t.text "paragraph"
t.datetime "created_at"
t.datetime "updated_at"
t.string "photo_file_name"
t.string "photo_content_type"
t.integer "photo_file_size"
t.datetime "photo_updated_at"
t.string "video_file_name"
t.string "video_content_type"
t.integer "video_file_size"
t.datetime "video_updated_at"
end
很乐意需要一些帮助！ ：）