Class: Phrender::RackMiddleware

Inherits:
Object
  • Object
show all
Defined in:
lib/phrender/rack_middleware.rb

Direct Known Subclasses

RackStatic

Instance Method Summary collapse

Constructor Details

#initialize(app, opts = {}) ⇒ RackMiddleware

Returns a new instance of RackMiddleware.



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# File 'lib/phrender/rack_middleware.rb', line 6

def initialize(app, opts = {})
  @app = app
  @index_file = opts[:index_file]
  @javascript_paths = opts[:javascript_files]
  @raw_javascript = opts[:javascript].join(';')
  @phantom = Phrender::PhantomJSEngine.new(opts)
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/phrender/rack_middleware.rb', line 14

def call(env)
  @req = Rack::Request.new(env)

  # Check if the next middleware can handle the request
  status, headers, body = @app.call(@req.env)

  # If it can't, or if it's just the index file delivered via aliasing for
  # pushstate, do phrender stuff.
  if status == 404 || headers['Push-State-Redirect']
    # If it's phantom making the request, then the phrender index file has
    # a request that the upstream server can't resolve, so catch it, instead
    # of recursively invoking the index
    if @req.user_agent && @req.user_agent.match(/PhantomJS/)
      [ 500, { 'Content-Type'  => 'text/html' }, [
      'Server Error: HTML file contains recursive lookup' ] ]
    else
      # Render the page
      body = render(@req.url)
      [ 200, { 'Content-Type'  => 'text/html' }, [ body ] ]
    end
  else
    [ status, headers, body ]
  end
end