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richhollis/cors_middleware.rb

Last active August 16, 2017 20:33
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CorsMiddleware which can be useful for testing SwaggerUI resources in development
Raw
cors_middleware.rb
class CorsMiddleware
def initialize(app)
@app = app
end
def call(env)
default_headers = {
'Access-Control-Allow-Origin' => '*',
'Access-Control-Allow-Methods' => 'GET, POST, DELETE, PUT, PATCH, OPTIONS',
'Access-Control-Allow-Headers' => 'Content-Type, api_key, Authorization, origin'
}
if env["REQUEST_METHOD"] == "OPTIONS"
puts "CorsMiddleware: Intercepted OPTIONS request: #{env["REQUEST_URI"]}"
return [200, default_headers, ["<html><body><h1>Intercepted</h1><p>This <b>#{env["REQUEST_METHOD"]}</b> request was intercepted by the CorsMiddleware</p></body></html>"]]
end
status, headers, body = @app.call(env)
[status, headers.merge(default_headers), body]
end
end
Raw
development.rb
Getaroom::Application.configure do
# Settings specified here will take precedence over those in config/application.rb
#
# ...
#
# Middleware for settings CORS headers (for dev testing API with swagger UI
config.middleware.insert_before ActionDispatch::Static, CorsMiddleware
end
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