Mercurial > genshi > genshi-test

annotate examples/tutorial/geddit/controller.py @ 611:16b1be35c265

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Add current code for GenshiTutorial to the `examples` directory.
author cmlenz
date Wed, 29 Aug 2007 17:51:45 +0000
parents
children d8f961381f75
rev   line source
611
16b1be35c265 Add current code for GenshiTutorial to the `examples` directory.
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1 #!/usr/bin/env python
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2
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3 import os
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4 import pickle
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5 import sys
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6
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7 import cherrypy
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8 from formencode import Invalid
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9 from genshi.filters import HTMLFormFiller
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10 from paste.evalexception.middleware import EvalException
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11
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12 from geddit.form import SubmissionForm, CommentForm
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13 from geddit.lib import template
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14 from geddit.model import Submission, Comment
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15
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16
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17 class Root(object):
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18
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19 def __init__(self, data):
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20 self.data = data
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21 self.submission_lookup = {}
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22 self.comment_lookup = {}
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23 for submission in self.data:
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24 self.submission_lookup[submission.code] = submission
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25 for comment in submission.comments:
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26 self.comment_lookup[comment.code] = comment
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27 def _add_replies(comment):
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28 for reply in comment.replies:
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29 self.comment_lookup[reply.code] = reply
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30 _add_replies(comment)
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31
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32 @cherrypy.expose
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33 @template.output('index.html', method='html', doctype='html')
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34 def index(self):
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35 return template.render(submissions=self.data)
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36
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37 @cherrypy.expose
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38 @template.output('info.html', method='html', doctype='html')
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39 def info(self, code):
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40 submission = self.submission_lookup.get(code)
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41 if not submission:
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42 raise cherrypy.NotFound()
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43 return template.render(submission=submission)
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44
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45 @cherrypy.expose
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46 @template.output('submit.html', method='html', doctype='html')
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47 def submit(self, cancel=False, **data):
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48 if cherrypy.request.method == 'POST':
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49 if cancel:
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50 raise cherrypy.HTTPRedirect('/')
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51 form = SubmissionForm()
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52 try:
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53 data = form.to_python(data)
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54 submission = Submission(**data)
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55 self.data.append(submission)
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56 raise cherrypy.HTTPRedirect('/')
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57 except Invalid, e:
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58 errors = e.unpack_errors()
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59 else:
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60 errors = {}
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61
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62 return template.render(errors=errors) | HTMLFormFiller(data=data)
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63
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64 @cherrypy.expose
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65 @template.output('comment.html', method='html', doctype='html')
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66 def comment(self, code, cancel=False, **data):
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67 submission = self.submission_lookup.get(code)
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68 if not submission:
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69 raise cherrypy.NotFound()
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70 if cherrypy.request.method == 'POST':
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71 if cancel:
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72 raise cherrypy.HTTPRedirect('/info/%s' % submission.code)
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73 form = CommentForm()
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74 try:
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75 data = form.to_python(data)
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76 comment = submission.add_comment(**data)
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77 self.comment_lookup[comment.code] = comment
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78 raise cherrypy.HTTPRedirect('/')
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79 except Invalid, e:
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80 errors = e.unpack_errors()
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81 else:
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82 errors = {}
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83
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84 return template.render(submission=submission, comment=None,
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85 errors=errors)
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86
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87 @cherrypy.expose
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88 @template.output('comment.html', method='html', doctype='html')
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89 def reply(self, code, cancel=False, **data):
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90 comment = self.comment_lookup.get(code)
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91 submission = comment.submission
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92 if not comment:
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93 raise cherrypy.NotFound()
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94 if cherrypy.request.method == 'POST':
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95 if cancel:
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96 raise cherrypy.HTTPRedirect('/info/%s' % submission.code)
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97 form = CommentForm()
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98 try:
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99 data = form.to_python(data)
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100 comment = comment.add_reply(**data)
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101 self.comment_lookup[comment.code] = comment
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102 raise cherrypy.HTTPRedirect('/')
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103 except Invalid, e:
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104 errors = e.unpack_errors()
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105 else:
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106 errors = {}
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107
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108 return template.render(submission=submission, comment=comment,
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109 errors=errors)
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110
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111
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112 def main(filename):
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113 # load data from the pickle file, or initialize it to an empty list
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114 if os.path.exists(filename):
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115 fileobj = open(filename, 'rb')
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116 try:
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117 data = pickle.load(fileobj)
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118 finally:
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119 fileobj.close()
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120 else:
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121 data = []
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122
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123 def _save_data():
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124 # save data back to the pickle file
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125 fileobj = open(filename, 'wb')
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126 try:
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127 pickle.dump(data, fileobj)
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128 finally:
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129 fileobj.close()
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130 cherrypy.engine.on_stop_engine_list.append(_save_data)
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131
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132 # Some global configuration; note that this could be moved into a configuration file
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133 cherrypy.config.update({
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134 'request.throw_errors': True,
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135 'tools.encode.on': True, 'tools.encode.encoding': 'utf-8',
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136 'tools.decode.on': True,
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137 'tools.trailing_slash.on': True,
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138 'tools.staticdir.root': os.path.abspath(os.path.dirname(__file__)),
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139 })
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140
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141 # Initialize the application, and add EvalException for more helpful error messages
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142 app = cherrypy.Application(Root(data))
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143 app.wsgiapp.pipeline.append(('paste_exc', EvalException))
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144 cherrypy.quickstart(app, '/', {
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145 '/media': {
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146 'tools.staticdir.on': True,
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147 'tools.staticdir.dir': 'static'
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148 }
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149 })
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150
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151 if __name__ == '__main__':
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152 import formencode
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153 formencode.api.set_stdtranslation(languages=['en'])
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154 main(sys.argv[1])
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