我使用的是Rails 4.0,我已经尝试过以下所有的…
我已经按照the rack-cors example for rails 4配置了Gemfile和application.rb：
的Gemfile
gem 'rack-cors','~> 0.2.9',require: 'rack/cors'
配置/ application.rb中
config.middleware.insert_before 'Actiondispatch::Static','Rack::Cors' do allow do origins '*' resource '*',:headers => :any,:methods => [:get,:options,:head] end end
导轨控制台
2.0.0-p481 :001 > Rails.env => "development" 2.0.0-p481 :002 > Hello::Application.config.serve_static_assets => true
庆典
curl -i http://localhost:5000/assets/OpenSans-Regular-webfont.woff Content-Type: application/font-woff Content-Length: 22660 Connection: keep-alive Status: 200 OK Cache-Control: public,must-revalidate Last-Modified: Wed,30 Apr 2014 23:51:57 GMT ETag: "467b34801137bd4031e139839ad86370" X-Request-Id: c4b07b4d-1c43-44ea-9565-dfda66378f98 X-Runtime: 0.046007 X-Powered-By: Phusion Passenger 4.0.50 Date: Sat,20 Sep 2014 04:39:38 UTC Server: Nginx/1.6.1 + Phusion Passenger 4.0.50 curl -i -H "Origin: http://localhost:5000" http://localhost:5000/assets/OpenSans-Regular-webfont.woff Content-Type: application/font-woff Content-Length: 22660 Connection: keep-alive Status: 200 OK Cache-Control: public,30 Apr 2014 23:51:57 GMT ETag: "467b34801137bd4031e139839ad86370" Access-Control-Allow-Origin: http://localhost:5000 # adding Access-Control-Allow-Methods: GET,OPTIONS,HEAD # -H Access-Control-Max-Age: 1728000 # produced Access-Control-Allow-Credentials: true # these vary: Origin # headers X-Request-Id: b9666f30-416d-4b5b-946a-bdd432bc191c X-Runtime: 0.050420 X-Powered-By: Phusion Passenger 4.0.50 Date: Sat,20 Sep 2014 03:45:30 UTC Server: Nginx/1.6.1 + Phusion Passenger 4.0.50
Chrome(v37)开发工具>网络> OpenSans-Regular-webfont.woff>标题>回应标题
HTTP/1.1 304 Not Modified Connection: keep-alive Status: 304 Not Modified Cache-Control: no-cache X-Request-Id: ac153b8c-e0cb-489d-94dd-90aacc10d715 X-Runtime: 0.116511 X-Powered-By: Phusion Passenger 4.0.50 Date: Sat,20 Sep 2014 03:41:53 UTC Server: Nginx/1.6.1 + Phusion Passenger 4.0.50
我也尝试了以下替代方案：根据various sources：
config.middleware.insert_before 'Actiondispatch::Static','Rack::Cors' do config.middleware.insert_after Rails::Rack::Logger,Rack::Cors do config.middleware.insert_before Warden::Manager,Rack::Cors do config.middleware.insert 0,Rack::Cors do config.middleware.use Rack::Cors do
我也尝试过以下的application.rb,根据How to Display FontAwesome in Firefox Using Rails and CloudFront：
config.assets.header_rules = { :global => {'Cache-Control' => 'public,max-age=31536000'},:fonts => {'Access-Control-Allow-Origin' => '*'} }
我还在config.ru中尝试了以下内容,按照CloudFront CDN with Rails on Heroku
require 'rack/cors'
use Rack::Cors do
allow do
origins '*'
resource '*',:methods => :get
end
end
捆绑exec rake中间件
use Rack::Cors use Rack::Sendfile use Actiondispatch::Static use Rack::Lock use #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x007f9ec21590b0> use Rack::Runtime use Rack::Methodoverride use Actiondispatch::RequestId use Rails::Rack::Logger use Actiondispatch::ShowExceptions use Actiondispatch::DebugExceptions use Actiondispatch::RemoteIp use Actiondispatch::Reloader use Actiondispatch::Callbacks use ActiveRecord::Migration::CheckPending use ActiveRecord::ConnectionAdapters::ConnectionManagement use ActiveRecord::QueryCache use Actiondispatch::Cookies use Actiondispatch::Session::CookieStore use Actiondispatch::Flash use Actiondispatch::ParamsParser use Rack::Head use Rack::ConditionalGet use Rack::ETag use Warden::Manager use OmniAuth::Strategies::Facebook run Hello::Application.routes
我也试过font_assets无效.
解决方法
这意味着标题必须由Nginx添加,而不是Rails,因此我们需要配置Nginx.事实证明,the ability to configure nginx is possible as of Passenger 4.0.39 – (here is the corresponding Git diff).相应的文档可在Passenger Standalone,under Advanced configuration中找到.
文档中的一个重要注意事项：原始配置模板文件可能会不时更改,例如因为新功能被引入Phusion乘客.如果您的配置模板文件不包含所需的更改,则这些新功能可能无法正常工作.在最坏的情况下,Standalone甚至可能会发生故障.因此,每次升级Phusion Passenger时,应检查原始配置模板文件是否已更改,并将任何更改合并到自己的文件中.
关于该注意事项,除了可自定义的配置文件副本之外,还可以创建一个“原始”副本,您可以在升级Passenger时进行差异化.
庆典
cp $(passenger-config about resourcesdir)/templates/standalone/config.erb config/Nginx.conf.erb cp config/Nginx.conf.erb config/Nginx.conf.erb.original
接下来,将–Nginx-config-template config / Nginx.conf.erb添加到procfile中的Web行.
web: bundle exec passenger start -p $PORT --max-pool-size 3 --Nginx-config-template config/Nginx.conf.erb
配置/ Nginx.conf.erb
接下来,通过查找如下所示的块来编辑配置文件config / Nginx.conf.erb：
location @static_asset {
gzip_static on;
expires max;
add_header Cache-Control public;
add_header ETag "";
}
…并添加两个访问控制行：
location @static_asset {
gzip_static on;
expires max;
add_header Cache-Control public;
add_header ETag "";
add_header Access-Control-Allow-Origin *;
add_header Access-Control-Request-Method *;
}
而已.这将在生产中工作,但不在开发中,由于两者之间的config.assets差异.
配置差异
差异现在不应该返回任何东西,但是如果将来对乘客的更新包含对此文件的更改,您将会知道.
diff $(passenger-config about resourcesdir)/templates/standalone/config.erb config/Nginx.conf.erb.original
Nginx文档
> http://nginx.org/en/docs/beginners_guide.html
> http://nginx.org/en/docs/http/ngx_http_core_module.html#location
未来的改进
