Class: Rack::ShowStatus
- Inherits:
-
Object
- Object
- Rack::ShowStatus
- Defined in:
- rack/rack/showstatus.rb
Overview
Rack::ShowStatus catches all empty responses and replaces them with a site explaining the error.
Additional details can be put into rack.showstatus.detail
and
will be shown as HTML. If such details exist, the error page is always
rendered, even if the reply was not empty.
Constant Summary
- TEMPLATE =
adapted from Django <djangoproject.com> Copyright (c) 2005, the Lawrence Journal-World Used under the modified BSD license: www.xfree86.org/3.3.6/COPYRIGHT2.html#5
<<'HTML' <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title><%=h message %> at <%=h req.script_name + req.path_info %></title> <meta name="robots" content="NONE,NOARCHIVE" /> <style type="text/css"> html * { padding:0; margin:0; } body * { padding:10px 20px; } body * * { padding:0; } body { font:small sans-serif; background:#eee; } body>div { border-bottom:1px solid #ddd; } h1 { font-weight:normal; margin-bottom:.4em; } h1 span { font-size:60%; color:#666; font-weight:normal; } table { border:none; border-collapse: collapse; width:100%; } td, th { vertical-align:top; padding:2px 3px; } th { width:12em; text-align:right; color:#666; padding-right:.5em; } #info { background:#f6f6f6; } #info ol { margin: 0.5em 4em; } #info ol li { font-family: monospace; } #summary { background: #ffc; } #explanation { background:#eee; border-bottom: 0px none; } </style> </head> <body> <div id="summary"> <h1><%=h message %> <span>(<%= status.to_i %>)</span></h1> <table class="meta"> <tr> <th>Request Method:</th> <td><%=h req.request_method %></td> </tr> <tr> <th>Request URL:</th> <td><%=h req.url %></td> </tr> </table> </div> <div id="info"> <p><%= detail %></p> </div> <div id="explanation"> <p> You're seeing this error because you use <code>Rack::ShowStatus</code>. </p> </div> </body> </html> HTML
Instance Method Summary (collapse)
- - (void) call(env)
-
- (void) h(obj)
:nodoc:.
-
- (ShowStatus) initialize(app)
constructor
A new instance of ShowStatus.
Constructor Details
- (ShowStatus) initialize(app)
Returns a new instance of ShowStatus
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# File 'rack/rack/showstatus.rb', line 14 def initialize(app) @app = app @template = ERB.new(TEMPLATE) end |
Instance Method Details
- (void) call(env)
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# File 'rack/rack/showstatus.rb', line 19 def call(env) status, headers, body = @app.call(env) headers = Utils::HeaderHash.new(headers) empty = headers['Content-Length'].to_i <= 0 # client or server error, or explicit message if (status.to_i >= 400 && empty) || env["rack.showstatus.detail"] # This double assignment is to prevent an "unused variable" warning on # Ruby 1.9.3. Yes, it is dumb, but I don't like Ruby yelling at me. req = req = Rack::Request.new(env) = Rack::Utils::HTTP_STATUS_CODES[status.to_i] || status.to_s # This double assignment is to prevent an "unused variable" warning on # Ruby 1.9.3. Yes, it is dumb, but I don't like Ruby yelling at me. detail = detail = env["rack.showstatus.detail"] || body = @template.result(binding) size = Rack::Utils.bytesize(body) [status, headers.merge("Content-Type" => "text/html", "Content-Length" => size.to_s), [body]] else [status, headers, body] end end |
- (void) h(obj)
:nodoc:
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# File 'rack/rack/showstatus.rb', line 44 def h(obj) # :nodoc: case obj when String Utils.escape_html(obj) else Utils.escape_html(obj.inspect) end end |