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""" |
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Tutorial: HTTP errors |
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HTTPError is used to return an error response to the client. |
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CherryPy has lots of options regarding how such errors are |
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logged, displayed, and formatted. |
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""" |
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import os |
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localDir = os.path.dirname(__file__) |
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curpath = os.path.normpath(os.path.join(os.getcwd(), localDir)) |
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import cherrypy |
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class HTTPErrorDemo(object): |
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_cp_config = {'error_page.403' : os.path.join(curpath, "custom_error.html")} |
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def index(self): |
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tracebacks = cherrypy.config.get('show_tracebacks') |
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if tracebacks: |
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trace = 'off' |
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else: |
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trace = 'on' |
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return """ |
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<html><body> |
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<h2><a href="toggleTracebacks">Toggle tracebacks %s</a></h2> |
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<p><a href="/doesNotExist">Click me; I'm a broken link!</a></p> |
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<p><a href="/error?code=403">Use a custom an error page from a file.</a></p> |
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<p>These errors are explicitly raised by the application:</p> |
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<ul> |
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<li><a href="/error?code=400">400</a></li> |
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<li><a href="/error?code=401">401</a></li> |
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<li><a href="/error?code=402">402</a></li> |
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<li><a href="/error?code=500">500</a></li> |
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</ul> |
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<p><a href="/messageArg">You can also set the response body |
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when you raise an error.</a></p> |
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</body></html> |
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""" % trace |
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index.exposed = True |
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def toggleTracebacks(self): |
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tracebacks = cherrypy.config.get('show_tracebacks') |
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cherrypy.config.update({'show_tracebacks': not tracebacks}) |
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raise cherrypy.HTTPRedirect('/') |
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toggleTracebacks.exposed = True |
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def error(self, code): |
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raise cherrypy.HTTPError(status = code) |
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error.exposed = True |
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def messageArg(self): |
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message = ("If you construct an HTTPError with a 'message' " |
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"argument, it wil be placed on the error page " |
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"(underneath the status line by default).") |
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raise cherrypy.HTTPError(500, message=message) |
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messageArg.exposed = True |
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cherrypy.tree.mount(HTTPErrorDemo()) |
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if __name__ == '__main__': |
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cherrypy.config.update(os.path.join(os.path.dirname(__file__), 'tutorial.conf')) |
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cherrypy.server.quickstart() |
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cherrypy.engine.start() |
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