How to force an application on rails to use assets?

Question

Ruby on Rails

Application in env=staging. Has the same settings as production. Starts. Styles and scripts does not display / does not execute. Assets are precompiled in public/stag-assets. I look at the links where they look. And they look in the right directions, if, for example, I poke in the chrome debugger on the link with the right button > open in a new tab - my css opens. Those. refer correctly, are given by the server, but are not displayed. On the Sources tab of the chrome debugger, I see the stag-assets folder there are two collected files - styles and scripts. The style file is empty. The script file is complete. But neither chrome nor other browsers use them, but display everything without styles. There was already such a situation, from a month ago - I won. I sit and remember how. It seems like it was the config.sass.cache = false option, set to true. Then everything rustled, but now sadness has broken back.
config/environment/staging.rb

Rails.application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  #Код приложения не перезагружается от запроса к запросу
  config.cache_classes = true

  # Eager load code on boot. This eager loads most of Rails and
  # your application in memory, allowing both threaded web servers
  # and those relying on copy on write to perform better.
  # Rake tasks automatically ignore this option for performance.
  config.eager_load = true

  # Полные отчеты об ошибках выводиться не будут
  config.consider_all_requests_local       = false
  # Кеширование включено
  config.action_controller.perform_caching = true

  # Enable Rack::Cache to put a simple HTTP cache in front of your application
  # Add `rack-cache` to your Gemfile before enabling this.
  # For large-scale production use, consider using a caching reverse proxy like
  # NGINX, varnish or squid.
  # config.action_dispatch.rack_cache = true

  # Disable serving static files from the `/public` folder by default since
  # Apache or NGINX already handles this.
  # config.serve_static_files = ENV['RAILS_SERVE_STATIC_FILES'].present?
  config.serve_static_files = false

  # Compress JavaScripts and CSS.
  config.assets.js_compressor = :uglifier
  # config.assets.css_compressor = :sass

  # Do not fallback to assets pipeline if a precompiled asset is missed.
  config.assets.compile = false

  # Asset digests allow you to set far-future HTTP expiration dates on all assets,
  # yet still be able to expire them through the digest params.
  config.assets.digest = true
  config.assets.prefix = '/stag-assets'

  # `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb

  # Specifies the header that your server uses for sending files.
  # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX

  # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
  # config.force_ssl = true

  # Use the lowest log level to ensure availability of diagnostic information
  # when problems arise.
  config.log_level = :debug

  # Prepend all log lines with the following tags.
  # config.log_tags = [ :subdomain, :uuid ]

  # Use a different logger for distributed setups.
  # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)

  # Use a different cache store in production.
  # config.cache_store = :mem_cache_store

  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
  # config.action_controller.asset_host = 'http://assets.example.com'

  # Ignore bad email addresses and do not raise email delivery errors.
  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
  # config.action_mailer.raise_delivery_errors = false

  # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
  # the I18n.default_locale when a translation cannot be found).
  config.i18n.fallbacks = true

  # Send deprecation notices to registered listeners.
  config.active_support.deprecation = :notify

  # Use default logging formatter so that PID and timestamp are not suppressed.
  config.log_formatter = ::Logger::Formatter.new

  # Do not dump schema after migrations.
  config.active_record.dump_schema_after_migration = false
end
Rails.application.default_url_options = { :host => ENV['host'] }

config.serve_static_files = false tried opposite value
also Another settings in application.rb:

require 'yaml'
require File.expand_path('../boot', __FILE__)
require 'rails/all'
Bundler.require(*Rails.groups)
ENV.update YAML.load_file('config/application.yml')[Rails.env]
ENV.update YAML.load_file('config/smtp.yml')
module ChePochem
  class Application < Rails::Application
    config.i18n.default_locale = :ru
    config.time_zone = ENV['time_zone']
    config.active_record.raise_in_transactional_callbacks = true
    config.autoload_paths += %W(#{config.root}/app/uploaders)
    config.sass.preferred_syntax = :sass
    config.sass.cache = false

    config.action_mailer.perform_deliveries = true
    config.action_mailer.raise_delivery_errors = true
    email = ENV['default_mail']
    config.action_mailer.default_url_options = { :host => ENV['host'] }
    smtp = {
      enable_starttls_auto: true,
      address: ENV['smtp_server'],
      port: ENV['smtp_port'].to_i,
      domain: ENV['host'],
      authentication: ENV['smtp_authentication'],
      user_name: ENV['smtp_user'],
      password: ENV['smtp_password'],
    }
    # Настройки для exception_notification
    config.middleware.use ExceptionNotification::Rack,
    :email => {
      :email_prefix => "[#{Rails.env} error] ",
      :sender_address => email,
      :exception_recipients => email,
      :delivery_method => :smtp,
      :smtp_settings => smtp
    }
    # Настройки ActionMailer
    config.action_mailer.delivery_method = :smtp
    config.action_mailer.smtp_settings = smtp
  end
  
end

Answer 1

nginx.conf

http {
  include  /etc/nginx/mime.types;
.........
  
  }