Mercurial > genshi > genshi-test

annotate examples/tutorial/geddit/controller.py @ 618:5a2059ce1f0b

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Simplify the tutorial project: comments are now flat, not hierarchical.
author cmlenz
date Thu, 30 Aug 2007 09:08:06 +0000
parents 80a9c247ca80
children 71d3edd302ae
rev   line source
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1 #!/usr/bin/env python
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2
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3 import operator
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4 import os
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5 import pickle
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6 import sys
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7
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8 import cherrypy
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9 from formencode import Invalid
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10 from genshi.filters import HTMLFormFiller
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11 from paste.evalexception.middleware import EvalException
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12
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13 from geddit.form import SubmissionForm, CommentForm
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14 from geddit.lib import template
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15 from geddit.model import Submission, Comment
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16
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17
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18 class Root(object):
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19
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20 def __init__(self, data):
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21 self.data = data
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22
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23 @cherrypy.expose
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24 @template.output('index.html')
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25 def index(self):
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26 return template.render(
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27 submissions=sorted(self.data.values(),
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28 key=operator.attrgetter('time'),
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29 reverse=True)
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30 )
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31
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32 @cherrypy.expose
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33 @template.output('info.html')
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34 def info(self, code):
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35 submission = self.data.get(code)
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36 if not submission:
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37 raise cherrypy.NotFound()
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38 return template.render(submission=submission)
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39
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40 @cherrypy.expose
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41 @template.output('submit.html')
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42 def submit(self, cancel=False, **data):
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43 if cherrypy.request.method == 'POST':
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44 if cancel:
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45 raise cherrypy.HTTPRedirect('/')
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46 form = SubmissionForm()
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47 try:
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48 data = form.to_python(data)
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49 submission = Submission(**data)
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50 self.data[submission.code] = submission
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51 raise cherrypy.HTTPRedirect('/')
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52 except Invalid, e:
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53 errors = e.unpack_errors()
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54 else:
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55 errors = {}
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56
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57 return template.render(errors=errors) | HTMLFormFiller(data=data)
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58
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59 @cherrypy.expose
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60 @template.output('comment.html')
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61 def comment(self, code, cancel=False, **data):
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62 submission = self.data.get(code)
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63 if not submission:
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64 raise cherrypy.NotFound()
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65 if cherrypy.request.method == 'POST':
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66 if cancel:
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67 raise cherrypy.HTTPRedirect('/info/%s' % submission.code)
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68 form = CommentForm()
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69 try:
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70 data = form.to_python(data)
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71 comment = submission.add_comment(**data)
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72 raise cherrypy.HTTPRedirect('/info/%s' % submission.code)
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73 except Invalid, e:
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74 errors = e.unpack_errors()
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75 else:
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76 errors = {}
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77
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78 return template.render(submission=submission, comment=None,
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79 errors=errors) | HTMLFormFiller(data=data)
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80
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81
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82 def main(filename):
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83 # load data from the pickle file, or initialize it to an empty list
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84 if os.path.exists(filename):
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85 fileobj = open(filename, 'rb')
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86 try:
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87 data = pickle.load(fileobj)
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88 finally:
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89 fileobj.close()
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90 else:
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91 data = {}
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92
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93 def _save_data():
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94 # save data back to the pickle file
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95 fileobj = open(filename, 'wb')
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96 try:
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97 pickle.dump(data, fileobj)
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98 finally:
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99 fileobj.close()
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100 cherrypy.engine.on_stop_engine_list.append(_save_data)
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101
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102 # Some global configuration; note that this could be moved into a configuration file
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103 cherrypy.config.update({
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104 'request.throw_errors': True,
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105 'tools.encode.on': True, 'tools.encode.encoding': 'utf-8',
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106 'tools.decode.on': True,
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107 'tools.trailing_slash.on': True,
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108 'tools.staticdir.root': os.path.abspath(os.path.dirname(__file__)),
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109 })
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110
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111 # Initialize the application, and add EvalException for more helpful error messages
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112 app = cherrypy.Application(Root(data))
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113 app.wsgiapp.pipeline.append(('paste_exc', EvalException))
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114 cherrypy.quickstart(app, '/', {
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115 '/media': {
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116 'tools.staticdir.on': True,
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117 'tools.staticdir.dir': 'static'
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118 }
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119 })
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120
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121 if __name__ == '__main__':
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122 import formencode
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123 formencode.api.set_stdtranslation(languages=['en'])
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124 main(sys.argv[1])
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