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POCan't get rack-cors working in rails application
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copied!<p>I wanted to implement CORS in my rails application, so I googled <a href="https://github.com/cyu/rack-cors">rack-cors</a> gem for it. And I did everything as was said in README, that is updated Gemfile accordingly and updated <code>application.rb</code> like this: <br></p> <pre><code>module YourApp class Application < Rails::Application # ... config.middleware.use Rack::Cors do allow do origins '*' resource '*', :headers => :any, :methods => [:get, :post, :options] end end end end </code></pre> <p>But it didn't work. No matter what I did, in the browser console I kept getting message:<br/> <code>XMLHttpRequest cannot load https://somewebsite.com. Origin http://0.0.0.0:3000 is not allowed by Access-Control-Allow-Origin.</code><br></p> <p>After reading this <a href="http://www.dougwaltman.com/blog/getting-cors-working-in-ruby-on-rails">blogpost</a> and <a href="https://github.com/cyu/rack-cors/issues/23">issue</a> on github, I realized that maybe position of rack-cors middleware in the middleware stack matters. So I did as was told in the github issue:</p> <pre><code>module YourApp class Application < Rails::Application # ... config.middleware.insert 0, Rack::Cors do allow do origins '*' resource '*', :headers => :any, :methods => [:get, :post, :options] end end end end </code></pre> <p>After that, when I run <code>rake middleware</code> rack-cors is really at the top of the stack.<br> But It still just simply won't work. I keep getting the same error. Anyone, please help.</p>

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