Class: ErrorPages

Inherits:
Object
  • Object
show all
Defined in:
lib/yodel/middleware/error_pages.rb

Constant Summary collapse

TEMPLATE = 
<<HTML
  <!DOCTYPE html>
  <html>
    <head>
      <title><%= error_code %> - <%= error %></title>
      <link rel="stylesheet" href="/core/css/core.css" type="text/css">
    </head>
    <body>
      <article id="modal">
        <header>
          <h1>yodel</h1>
          <div id="lip"></div>
        </header>
        <h1><%= error %></h1>
        <p><%= description %></p>
      </article>
    </body>
  </html>
HTML

Instance Method Summary collapse

Constructor Details

#initialize(app) ⇒ ErrorPages

Returns a new instance of ErrorPages.



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# File 'lib/yodel/middleware/error_pages.rb', line 2

def initialize(app)
  @app = app
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/yodel/middleware/error_pages.rb', line 6

def call(env)
  status, headers, response = @app.call(env)
  if status.to_i >= 400 && status.to_i != 401
    return render_error_page(status, response)
  else
    return [status, headers, response]
  end
rescue
  Yodel.config.logger.warn $!.to_s
  if Yodel.env.production?
    if $!.is_a?(DomainNotFound)
      return render_error_page(404, ['No site has been set up at this address'])
    else
      return render_error_page(500, [])
    end
  else
    if $!.respond_to?(:error) && $!.respond_to?(:description)
      return render_error_page(404, $!.error, $!.description)
    else
      raise $!
    end
  end
end

#render_error_page(error_code, response, description = nil) ⇒ Object 



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# File 'lib/yodel/middleware/error_pages.rb', line 30

def render_error_page(error_code, response, description=nil)
  template = Ember::Template.new(TEMPLATE)
  if response.present? && response.respond_to?(:length) && response.length > 0
    components = []
    response.each {|component| components << component}
    error = components.join
  elsif error_code == 403
    error = "Unauthorised"
  else
    error = "We're sorry, something went wrong."
  end
  if description.nil?
    if error_code == 404
      description = "You may have mistyped the address or the page may have moved."
    elsif error_code == 403
      description = "You must log in before performing this action."
    else
      description = "We've been notified about this issue and we'll take a look at it shortly."
    end
  end
  [error_code, {'Content-Type' => 'text/html'}, [template.render(binding)]]
end