Class: Rack::MethodOverride

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/method_override.rb

Constant Summary collapse

HTTP_METHODS = 
%w[GET HEAD PUT POST DELETE OPTIONS PATCH LINK UNLINK]
METHOD_OVERRIDE_PARAM_KEY = 
"_method"
HTTP_METHOD_OVERRIDE_HEADER = 
"HTTP_X_HTTP_METHOD_OVERRIDE"
ALLOWED_METHODS = 
%w[POST]

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ MethodOverride

Returns a new instance of MethodOverride.



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# File 'lib/rack/method_override.rb', line 15

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/method_override.rb', line 19

def call(env)
  if allowed_methods.include?(env[REQUEST_METHOD])
    method = method_override(env)
    if HTTP_METHODS.include?(method)
      env[RACK_METHODOVERRIDE_ORIGINAL_METHOD] = env[REQUEST_METHOD]
      env[REQUEST_METHOD] = method
    end
  end

  @app.call(env)
end

#method_override(env) ⇒ Object 



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# File 'lib/rack/method_override.rb', line 31

def method_override(env)
  req = Request.new(env)
  method = method_override_param(req) ||
    env[HTTP_METHOD_OVERRIDE_HEADER]
  begin
    method.to_s.upcase
  rescue ArgumentError
    env[RACK_ERRORS].puts "Invalid string for method"
  end
end