undefined method `has_one_attached' for #<Class:> (NoMethodError) using Ubuntu + Apache + Passenger

jude
March 18, 2019
162 views
2 votes
5 Answers

I’m getting this error using Ubuntu + Apache + Passenger.
The problem is that I’m not using any database or model.

undefined method `has_one_attached' for #<Class:0x0000555c6ad94fd8> (NoMethodError)
  /usr/local/rvm/gems/ruby-2.5.1/gems/activerecord-5.2.1/lib/active_record/dynamic_matchers.rb:22:in `method_missing'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob/representable.rb:7:in `block in <module:Representable>'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/concern.rb:122:in `class_eval'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/concern.rb:122:in `append_features'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob.rb:23:in `include'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob.rb:23:in `<class:Blob>'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activestorage-5.2.1/app/models/active_storage/blob.rb:16:in `<main>'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `block in require'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:253:in `load_dependency'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:374:in `block in require_or_load'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:37:in `block in load_interlock'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies/interlock.rb:14:in `block in loading'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/concurrency/share_lock.rb:151:in `exclusive'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies/interlock.rb:13:in `loading'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:37:in `load_interlock'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:352:in `require_or_load'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:48:in `block in require_or_load'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:16:in `allow_bootsnap_retry'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:47:in `require_or_load'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:330:in `depend_on'
  /usr/local/rvm/gems/ruby-2.5.1/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/active_support.rb:82:in `depend_on'
  /usr/local/rvm/gems/ruby-2.5.1/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:244:in `require_dependency'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/engine.rb:478:in `block (2 levels) in eager_load!'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/engine.rb:477:in `each'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/engine.rb:477:in `block in eager_load!'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/engine.rb:475:in `each'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/engine.rb:475:in `eager_load!'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/engine.rb:356:in `eager_load!'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/application/finisher.rb:69:in `each'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/application/finisher.rb:69:in `block in <module:Finisher>'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/initializable.rb:32:in `instance_exec'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/initializable.rb:32:in `run'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/initializable.rb:61:in `block in run_initializers'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:228:in `block in tsort_each'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:431:in `each_strongly_connected_component_from'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:349:in `block in each_strongly_connected_component'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:347:in `each'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:347:in `call'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:347:in `each_strongly_connected_component'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:226:in `tsort_each'
  /usr/local/rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:205:in `tsort_each'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/initializable.rb:60:in `run_initializers'
  /usr/local/rvm/gems/ruby-2.5.1/gems/railties-5.2.1/lib/rails/application.rb:361:in `initialize!'
  /var/www/app/config/environment.rb:5:in `<top (required)>'
  config.ru:3:in `require_relative'
  config.ru:3:in `block in <main>'
  /usr/local/rvm/gems/ruby-2.5.1/gems/rack-2.0.6/lib/rack/builder.rb:55:in `instance_eval'
  /usr/local/rvm/gems/ruby-2.5.1/gems/rack-2.0.6/lib/rack/builder.rb:55:in `initialize'
  config.ru:1:in `new'
  config.ru:1:in `<main>'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:101:in `eval'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:101:in `preload_app'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:189:in `block in <module:App>'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/loader_shared_helpers.rb:380:in `run_block_and_record_step_progress'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:188:in `<module:App>'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>'
  /usr/share/passenger/helper-scripts/rack-preloader.rb:29:in `<main>'

Answers

- LCastilloBarranco
- March 18, 2019 at 2:25 pm
- 0 votes
0
Did you install ActiveStorage?:
```
rails active_storage:install:migrations
rails db:migrate
```
If you are not using any DB, you can’t use it.
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- ArgenisGomez
- August 25, 2020 at 4:01 pm
- 0 votes
0
At least up to 5.2.4.3, ActiveStorage seems to initialize and inject its methods into ActiveRecord after Rails config/initializers are loaded.
If any initializer uses any model calling ActiveStorage macros, as has_one_attached or has_many_attached, those methods are missing by then.

For example, if you have a User model using has_one_attached :image , and you use User as your Devise model, Device initializer will refer User, and when User is loaded the method has_one_attached will be missing.

I added this code, taken from active_storage/engine, at the end of config/application.rb, and it worked for me.
```
# config/application.rb
require "active_storage/attached"
ActiveSupport.on_load(:active_record) do
  extend ActiveStorage::Attached::Macros
end
```
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- sparkle
- January 5, 2022 at 6:25 pm
- 0 votes
0
For me it has been solved removing this line

config/initializers/active_admin.rb
```
config.before_action :set_admin_locale
```
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- GianpaoloScrigna
- October 10, 2022 at 5:19 pm
- 0 votes
0
On Rails 6.1 this seems to work:
```
# config/application.rb
ActiveSupport.on_load(:active_record) do
  include ActiveStorage::Reflection::ActiveRecordExtensions
  ActiveRecord::Reflection.singleton_class.prepend(ActiveStorage::Reflection::ReflectionExtension)
  include ActiveStorage::Attached::Model
end
```
I found this solution starting from Argenis’s answer and mixing it with the one in this other SO
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- ediathome
- February 23, 2023 at 4:12 pm
- 0 votes
0
This error will also occur if you have the following line commented out in your application.rb:
```
# require "active_storage/engine"
```
Make sure that this is active:
```
require "active_storage/engine"
```
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