2017-05-09 20 views
0

在Ruby on Rails API中遇到問題:我已經設置了Access-Control-Allow-Origin作爲「*」在我的config/application.rb中,如下面的代碼所示。但是,當我的前端向後端API發出GET或POST請求時,我會在請求的資源上出現錯誤「No'Access-Control-Allow-Origin'標題,因此不允許Origin'http://localhost:8888'訪問。訪問控制允許來源已在Rails中設置,仍然抱怨「否」訪問控制允許來源「標題存在於請求的資源中」

require_relative 'boot' 

require "rails" 
# Pick the frameworks you want: 
require "active_model/railtie" 
require "active_job/railtie" 
require "active_record/railtie" 
require "action_controller/railtie" 
require "action_mailer/railtie" 
require "action_view/railtie" 
require "action_cable/engine" 
# require "sprockets/railtie" 
# require "rails/test_unit/railtie" 

# Require the gems listed in Gemfile, including any gems 
# you've limited to :test, :development, or :production. 
Bundler.require(*Rails.groups) 

module MyapplicationApi 
    class Application < Rails::Application 
    # Initialize configuration defaults for originally generated Rails version. 
    # config.load_defaults 5.1 

    # Settings in config/environments/* take precedence over those specified here. 
    # Application configuration should go into files in config/initializers 
    # -- all .rb files in that directory are automatically loaded. 

    # Only loads a smaller set of middleware suitable for API only apps. 
    # Middleware like session, flash, cookies can be added back manually. 
    # Skip views, helpers and assets when generating a new resource. 
    config.api_only = true 
    config.action_dispatch.default_headers = { 
     'Access-Control-Allow-Origin' => '*', 
     'Access-Control-Request-Method' => %w{GET POST PUT OPTIONS}.join(",") 
    } 
    end 
end 

我也嘗試添加以下行不果:

'Access-Control-Request-Method' => '*', 
'Access-Control-Allow-Methods' => 'POST, PUT, DELETE, GET, OPTIONS', 
'Access-Control-Allow-Headers' => 'Origin, X-Requested-With, Content-Type, Accept, Authorization' 

感謝您的幫助!

+0

可能的重複:http://stackoverflow.com/questions/17858178/allow-anything-through-cors-policy –

回答

1

有你的Gemfile

使用

gem 'rack-cors' 

如果沒有嘗試添加此。它會幫助

+1

非常感謝這個建議,它的工作! –

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