Mercurial > genshi > genshi-test

annotate examples/tutorial/geddit/controller.py @ 631:e414dc0bca5c

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GenshiTutorial: implement the XSS section.
author cmlenz
date Tue, 04 Sep 2007 19:20:46 +0000
parents 693a7212b348
children c5e5801c32ac
rev   line source
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1 #!/usr/bin/env python
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2
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3 import operator, os, pickle, sys
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4
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5 import cherrypy
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6 from formencode import Invalid
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7 from genshi.input import HTML
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8 from genshi.filters import HTMLFormFiller, HTMLSanitizer
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9
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10 from geddit.form import LinkForm, CommentForm
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11 from geddit.lib import ajax, template
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12 from geddit.model import Link, Comment
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13
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14
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15 class Root(object):
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16
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17 def __init__(self, data):
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18 self.data = data
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19
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20 @cherrypy.expose
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21 @template.output('index.html')
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22 def index(self):
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23 links = sorted(self.data.values(), key=operator.attrgetter('time'))
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24 return template.render(links=links)
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25
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26 @cherrypy.expose
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27 @template.output('submit.html')
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28 def submit(self, cancel=False, **data):
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29 if cherrypy.request.method == 'POST':
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30 if cancel:
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31 raise cherrypy.HTTPRedirect('/')
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32 form = LinkForm()
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33 try:
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34 data = form.to_python(data)
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35 link = Link(**data)
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36 self.data[link.id] = link
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37 raise cherrypy.HTTPRedirect('/')
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38 except Invalid, e:
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39 errors = e.unpack_errors()
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40 else:
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41 errors = {}
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42
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43 return template.render(errors=errors) | HTMLFormFiller(data=data)
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44
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45 @cherrypy.expose
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46 @template.output('info.html')
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47 def info(self, id):
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48 link = self.data.get(id)
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49 if not link:
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50 raise cherrypy.NotFound()
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51 return template.render(link=link)
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52
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53 @cherrypy.expose
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54 @template.output('comment.html')
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55 def comment(self, id, cancel=False, **data):
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56 link = self.data.get(id)
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57 if not link:
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58 raise cherrypy.NotFound()
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59 if cherrypy.request.method == 'POST':
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60 if cancel:
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61 raise cherrypy.HTTPRedirect('/info/%s' % link.id)
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62 form = CommentForm()
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63 try:
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64 data = form.to_python(data)
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65 markup = HTML(data['content']) | HTMLSanitizer()
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66 data['content'] = markup.render('xhtml')
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67 comment = link.add_comment(**data)
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68 if not ajax.is_xhr():
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69 raise cherrypy.HTTPRedirect('/info/%s' % link.id)
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70 return template.render('_comment.html', comment=comment,
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71 num=len(link.comments))
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72 except Invalid, e:
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73 errors = e.unpack_errors()
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74 else:
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75 errors = {}
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76
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77 if ajax.is_xhr():
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78 stream = template.render('_form.html', link=link, errors=errors)
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79 else:
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80 stream = template.render(link=link, comment=None, errors=errors)
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81 return stream | HTMLFormFiller(data=data)
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82
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83 @cherrypy.expose
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84 @template.output('index.xml', method='xml')
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85 def feed(self, id=None):
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86 if id:
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87 link = self.data.get(id)
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88 if not link:
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89 raise cherrypy.NotFound()
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90 return template.render('info.xml', link=link)
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91 else:
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92 links = sorted(self.data.values(), key=operator.attrgetter('time'))
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93 return template.render(links=links)
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94
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95
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96 def main(filename):
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97 # load data from the pickle file, or initialize it to an empty list
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98 if os.path.exists(filename):
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99 fileobj = open(filename, 'rb')
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100 try:
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101 data = pickle.load(fileobj)
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102 finally:
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103 fileobj.close()
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104 else:
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105 data = {}
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106
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107 def _save_data():
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108 # save data back to the pickle file
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109 fileobj = open(filename, 'wb')
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110 try:
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111 pickle.dump(data, fileobj)
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112 finally:
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113 fileobj.close()
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114 cherrypy.engine.on_stop_engine_list.append(_save_data)
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115
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116 # Some global configuration; note that this could be moved into a
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117 # configuration file
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118 cherrypy.config.update({
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119 'request.throw_errors': True,
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120 'tools.encode.on': True, 'tools.encode.encoding': 'utf-8',
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121 'tools.decode.on': True,
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122 'tools.trailing_slash.on': True,
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123 'tools.staticdir.root': os.path.abspath(os.path.dirname(__file__)),
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124 })
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125
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126 cherrypy.quickstart(Root(data), '/', {
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127 '/media': {
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128 'tools.staticdir.on': True,
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129 'tools.staticdir.dir': 'static'
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130 }
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131 })
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132
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133 if __name__ == '__main__':
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134 import formencode
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135 formencode.api.set_stdtranslation(languages=['en'])
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136 main(sys.argv[1])
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