图像未显示在基于 spree 的 rails 应用程序中

【问题标题】：Images are not showing in the spree based rails app图像未显示在基于 spree 的 rails 应用程序中
【发布时间】：2020-09-19 08:48:35
【问题描述】：

我是 Spree 的菜鸟。我已经使用示例数据设置了一个狂欢应用程序，现在从管理员上传产品的图像后，图像仍然没有显示在前端。也得到了很多

TypeError (no implicit conversion to float from string):
  
ruby-vips (2.0.17) lib/vips/gvalue.rb:106:in `g_value_set_double'
ruby-vips (2.0.17) lib/vips/gvalue.rb:106:in `set'
ruby-vips (2.0.17) lib/vips/object.rb:258:in `set'
ruby-vips (2.0.17) lib/vips/operation.rb:249:in `set'
ruby-vips (2.0.17) lib/vips/operation.rb:384:in `block in call'
ruby-vips (2.0.17) lib/vips/operation.rb:377:in `each_index'
ruby-vips (2.0.17) lib/vips/operation.rb:377:in `call'
ruby-vips (2.0.17) lib/vips/image.rb:211:in `method_missing'
image_processing (1.11.0) lib/image_processing/processor.rb:62:in `public_send'
image_processing (1.11.0) lib/image_processing/processor.rb:62:in `apply_operation'
image_processing (1.11.0) lib/image_processing/processor.rb:39:in `apply_operation'
image_processing (1.11.0) lib/image_processing/processor.rb:19:in `block in call'
image_processing (1.11.0) lib/image_processing/processor.rb:18:in `each'
image_processing (1.11.0) lib/image_processing/processor.rb:18:in `call'
image_processing (1.11.0) lib/image_processing/pipeline.rb:50:in `call_processor'
image_processing (1.11.0) lib/image_processing/pipeline.rb:28:in `block in call'
image_processing (1.11.0) lib/image_processing/pipeline.rb:64:in `create_tempfile'
image_processing (1.11.0) lib/image_processing/pipeline.rb:27:in `call'
image_processing (1.11.0) lib/image_processing/builder.rb:13:in `call!'
image_processing (1.11.0) lib/image_processing/chainable.rb:65:in `call'
activestorage (6.0.3.3) lib/active_storage/transformers/image_processing_transformer.rb:15:in `process'
activestorage (6.0.3.3) lib/active_storage/transformers/transformer.rb:25:in `transform'
activestorage (6.0.3.3) app/models/active_storage/variation.rb:52:in `block in transform'
activesupport (6.0.3.3) lib/active_support/notifications.rb:182:in `instrument'
activestorage (6.0.3.3) app/models/active_storage/variation.rb:51:in `transform'
activestorage (6.0.3.3) app/models/active_storage/variant.rb:105:in `transform'
activestorage (6.0.3.3) app/models/active_storage/variant.rb:100:in `block in process'
activestorage (6.0.3.3) lib/active_storage/downloader.rb:15:in `block in open'
activestorage (6.0.3.3) lib/active_storage/downloader.rb:24:in `open_tempfile'
activestorage (6.0.3.3) lib/active_storage/downloader.rb:12:in `open'
activestorage (6.0.3.3) lib/active_storage/service.rb:86:in `open'
activestorage (6.0.3.3) app/models/active_storage/blob.rb:219:in `open'
activestorage (6.0.3.3) app/models/active_storage/variant.rb:99:in `process'
activestorage (6.0.3.3) app/models/active_storage/variant.rb:67:in `processed'
activestorage (6.0.3.3) app/controllers/active_storage/representations_controller.rb:12:in `show'
actionpack (6.0.3.3) lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
actionpack (6.0.3.3) lib/abstract_controller/base.rb:195:in `process_action'
actionpack (6.0.3.3) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (6.0.3.3) lib/abstract_controller/callbacks.rb:42:in `block in process_action'
activesupport (6.0.3.3) lib/active_support/callbacks.rb:135:in `run_callbacks'
actionpack (6.0.3.3) lib/abstract_controller/callbacks.rb:41:in `process_action'
actionpack (6.0.3.3) lib/action_controller/metal/rescue.rb:22:in `process_action'
actionpack (6.0.3.3) lib/action_controller/metal/instrumentation.rb:33:in `block in process_action'
activesupport (6.0.3.3) lib/active_support/notifications.rb:180:in `block in instrument'
activesupport (6.0.3.3) lib/active_support/notifications/instrumenter.rb:24:in `instrument'
activesupport (6.0.3.3) lib/active_support/notifications.rb:180:in `instrument'
actionpack (6.0.3.3) lib/action_controller/metal/instrumentation.rb:32:in `process_action'
actionpack (6.0.3.3) lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
activerecord (6.0.3.3) lib/active_record/railties/controller_runtime.rb:27:in `process_action'
actionpack (6.0.3.3) lib/abstract_controller/base.rb:136:in `process'
actionview (6.0.3.3) lib/action_view/rendering.rb:39:in `process'
actionpack (6.0.3.3) lib/action_controller/metal.rb:190:in `dispatch'
actionpack (6.0.3.3) lib/action_controller/metal.rb:254:in `dispatch'
actionpack (6.0.3.3) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
actionpack (6.0.3.3) lib/action_dispatch/routing/route_set.rb:33:in `serve'
actionpack (6.0.3.3) lib/action_dispatch/journey/router.rb:49:in `block in serve'
actionpack (6.0.3.3) lib/action_dispatch/journey/router.rb:32:in `each'
actionpack (6.0.3.3) lib/action_dispatch/journey/router.rb:32:in `serve'
actionpack (6.0.3.3) lib/action_dispatch/routing/route_set.rb:834:in `call'
warden (1.2.9) lib/warden/manager.rb:36:in `block in call'
warden (1.2.9) lib/warden/manager.rb:34:in `catch'
warden (1.2.9) lib/warden/manager.rb:34:in `call'
rack (2.2.3) lib/rack/tempfile_reaper.rb:15:in `call'
rack (2.2.3) lib/rack/etag.rb:27:in `call'
rack (2.2.3) lib/rack/conditional_get.rb:27:in `call'
rack (2.2.3) lib/rack/head.rb:12:in `call'
actionpack (6.0.3.3) lib/action_dispatch/http/content_security_policy.rb:18:in `call'
rack (2.2.3) lib/rack/session/abstract/id.rb:266:in `context'
rack (2.2.3) lib/rack/session/abstract/id.rb:260:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/cookies.rb:648:in `call'
activerecord (6.0.3.3) lib/active_record/migration.rb:567:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
activesupport (6.0.3.3) lib/active_support/callbacks.rb:101:in `run_callbacks'
actionpack (6.0.3.3) lib/action_dispatch/middleware/callbacks.rb:26:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/executor.rb:14:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/actionable_exceptions.rb:17:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call'
web-console (4.0.4) lib/web_console/middleware.rb:132:in `call_app'
web-console (4.0.4) lib/web_console/middleware.rb:28:in `block in call'
web-console (4.0.4) lib/web_console/middleware.rb:17:in `catch'
web-console (4.0.4) lib/web_console/middleware.rb:17:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/show_exceptions.rb:33:in `call'
railties (6.0.3.3) lib/rails/rack/logger.rb:37:in `call_app'
railties (6.0.3.3) lib/rails/rack/logger.rb:26:in `block in call'
activesupport (6.0.3.3) lib/active_support/tagged_logging.rb:80:in `block in tagged'
activesupport (6.0.3.3) lib/active_support/tagged_logging.rb:28:in `tagged'
activesupport (6.0.3.3) lib/active_support/tagged_logging.rb:80:in `tagged'
railties (6.0.3.3) lib/rails/rack/logger.rb:26:in `call'
sprockets-rails (3.2.2) lib/sprockets/rails/quiet_assets.rb:13:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/remote_ip.rb:81:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/request_id.rb:27:in `call'
rack (2.2.3) lib/rack/method_override.rb:24:in `call'
rack (2.2.3) lib/rack/runtime.rb:22:in `call'
activesupport (6.0.3.3) lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/executor.rb:14:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/static.rb:126:in `call'
rack (2.2.3) lib/rack/sendfile.rb:110:in `call'
actionpack (6.0.3.3) lib/action_dispatch/middleware/host_authorization.rb:82:in `call'
webpacker (4.3.0) lib/webpacker/dev_server_proxy.rb:23:in `perform_request'
rack-proxy (0.6.5) lib/rack/proxy.rb:57:in `call'
railties (6.0.3.3) lib/rails/engine.rb:527:in `call'
puma (4.3.6) lib/puma/configuration.rb:228:in `call'
puma (4.3.6) lib/puma/server.rb:713:in `handle_request'
puma (4.3.6) lib/puma/server.rb:472:in `process_client'
puma (4.3.6) lib/puma/server.rb:328:in `block in run'
puma (4.3.6) lib/puma/thread_pool.rb:134:in `block in spawn_thread'
Completed 200 OK in 285ms (Views: 29.6ms | ActiveRecord: 42.2ms | Allocations: 51981)

上下文

我已根据需要更改了分类法。另外，我删除了许多产品并根据需要添加了产品，其中包含图像，但是在渲染包含这些图像的页面时，前端没有显示图像。需要显示图像的位置如下图所示。

预期行为

图像应该可以正常显示，没有任何错误日志。

可能的修复

我认为这也与 ruby​​-vips 有关，但我知道通过更改这些图像调用的方法将解决此问题。我需要知道调用它的位置或更改功能的方法，以便我可以从任何装饰器中按自己的方式调用。

您的环境

  • 大礼包版本-spree-4.1.9
  • Rails 版本 - 6.0.3.3

【问题讨论】：

  • 你有更长的堆栈跟踪吗？当它需要一个浮点数时，某些东西正在通过 ruby​​-vips 一个字符串，但我看不到是什么。
  • 是的，你是对的。这是同样的事情，但需要知道在哪里以及如何改变它。根据我的整体理解，这是因为 Spree 框架。我需要知道 Spree 控制器和发生这种情况的功能以及如何更改它？
  • 如果您可以在某处捕获异常，您可以使用puts exception.backtrace 打印完整的回溯。

标签： ruby-on-rails ruby spree ruby-on-rails-6 vips


【解决方案1】：

这是由于使用了ruby-vips 图像处理库（现在是 Rails 7+ 默认）。

如果您使用的是 ruby-vips（Rails 7+ 默认）：

class User < ApplicationRecord
  has_one_attached :avatar do |attachable|
    attachable.variant :thumb, resize_to_limit: [100, nil]
  end
end

如果您使用的是 imagemajick：

class User < ApplicationRecord
  has_one_attached :avatar do |attachable|
    attachable.variant :thumb, resize: "100x100"
  end
end

见https://github.com/rails/rails/pull/43940

【讨论】：

    【解决方案2】：

    由于您使用 rails v6.0.3.3 并使用 Active Storage 进行图像上传。您只需从 Gemfile 中取消注释此 gem（用于生成变体图像）并尝试从 spree 后端上传图像。

    gem "image_processing", ">= 1.2"

    见 - https://guides.rubyonrails.org/active_storage_overview.html#amazon-s3-service

    希望这能解决您的问题。

    【讨论】：

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