Mercurial > genshi > mirror
view examples/tutorial/geddit/controller.py @ 829:6e46513e1c5c trunk
Add caching in the serialization stage, which speeds up the serialization of markup that has a lot of repetitive elements.
author | cmlenz |
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date | Fri, 13 Mar 2009 18:46:01 +0000 |
parents | fdebe71666ce |
children |
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#!/usr/bin/env python import operator, os, pickle, sys import cherrypy from formencode import Invalid from genshi.input import HTML from genshi.filters import HTMLFormFiller, HTMLSanitizer from geddit.form import LinkForm, CommentForm from geddit.lib import ajax, template from geddit.model import Link, Comment class Root(object): def __init__(self, data): self.data = data @cherrypy.expose @template.output('index.html') def index(self): links = sorted(self.data.values(), key=operator.attrgetter('time')) return template.render(links=links) @cherrypy.expose @template.output('submit.html') def submit(self, cancel=False, **data): if cherrypy.request.method == 'POST': if cancel: raise cherrypy.HTTPRedirect('/') form = LinkForm() try: data = form.to_python(data) link = Link(**data) self.data[link.id] = link raise cherrypy.HTTPRedirect('/') except Invalid, e: errors = e.unpack_errors() else: errors = {} return template.render(errors=errors) | HTMLFormFiller(data=data) @cherrypy.expose @template.output('info.html') def info(self, id): link = self.data.get(id) if not link: raise cherrypy.NotFound() return template.render(link=link) @cherrypy.expose @template.output('comment.html') def comment(self, id, cancel=False, **data): link = self.data.get(id) if not link: raise cherrypy.NotFound() if cherrypy.request.method == 'POST': if cancel: raise cherrypy.HTTPRedirect('/info/%s' % link.id) form = CommentForm() try: data = form.to_python(data) markup = HTML(data['content']) | HTMLSanitizer() data['content'] = markup.render('xhtml') comment = link.add_comment(**data) if not ajax.is_xhr(): raise cherrypy.HTTPRedirect('/info/%s' % link.id) return template.render('_comment.html', comment=comment, num=len(link.comments)) except Invalid, e: errors = e.unpack_errors() else: errors = {} if ajax.is_xhr(): stream = template.render('_form.html', link=link, errors=errors) else: stream = template.render(link=link, comment=None, errors=errors) return stream | HTMLFormFiller(data=data) @cherrypy.expose @template.output('index.xml', method='xml') def feed(self, id=None): if id: link = self.data.get(id) if not link: raise cherrypy.NotFound() return template.render('info.xml', link=link) else: links = sorted(self.data.values(), key=operator.attrgetter('time')) return template.render(links=links) def main(filename): # load data from the pickle file, or initialize it to an empty list if os.path.exists(filename): fileobj = open(filename, 'rb') try: data = pickle.load(fileobj) finally: fileobj.close() else: data = {} def _save_data(): # save data back to the pickle file fileobj = open(filename, 'wb') try: pickle.dump(data, fileobj) finally: fileobj.close() if hasattr(cherrypy.engine, 'subscribe'): # CherryPy >= 3.1 cherrypy.engine.subscribe('stop', _save_data) else: cherrypy.engine.on_stop_engine_list.append(_save_data) # Some global configuration; note that this could be moved into a # configuration file cherrypy.config.update({ 'tools.encode.on': True, 'tools.encode.encoding': 'utf-8', 'tools.decode.on': True, 'tools.trailing_slash.on': True, 'tools.staticdir.root': os.path.abspath(os.path.dirname(__file__)), }) cherrypy.quickstart(Root(data), '/', { '/media': { 'tools.staticdir.on': True, 'tools.staticdir.dir': 'static' } }) if __name__ == '__main__': import formencode formencode.api.set_stdtranslation(languages=['en']) main(sys.argv[1])