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annotate pylons_app/model/forms.py @ 314:0d26d46bd370

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protected againts changing default user.
author Marcin Kuzminski <marcin@python-works.com>
date Tue, 29 Jun 2010 20:36:09 +0200
parents fc4027fe46bc
children 05b212954275
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1 """ this is forms validation classes
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2 http://formencode.org/module-formencode.validators.html
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3 for list off all availible validators
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4
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5 we can create our own validators
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6
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7 The table below outlines the options which can be used in a schema in addition to the validators themselves
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8 pre_validators [] These validators will be applied before the schema
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9 chained_validators [] These validators will be applied after the schema
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10 allow_extra_fields False If True, then it is not an error when keys that aren't associated with a validator are present
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11 filter_extra_fields False If True, then keys that aren't associated with a validator are removed
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12 if_key_missing NoDefault If this is given, then any keys that aren't available but are expected will be replaced with this value (and then validated). This does not override a present .if_missing attribute on validators. NoDefault is a special FormEncode class to mean that no default values has been specified and therefore missing keys shouldn't take a default value.
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13 ignore_key_missing False If True, then missing keys will be missing in the result, if the validator doesn't have .if_missing on it already
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14
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15
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16 <name> = formencode.validators.<name of validator>
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17 <name> must equal form name
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18 list=[1,2,3,4,5]
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19 for SELECT use formencode.All(OneOf(list), Int())
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20
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21 """
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22 from formencode import All
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23 from formencode.validators import UnicodeString, OneOf, Int, Number, Regex, \
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24 Email, Bool, StringBoolean
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25 from pylons import session
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26 from pylons.i18n.translation import _
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27 from pylons_app.lib.auth import get_crypt_password
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28 import pylons_app.lib.helpers as h
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29 from pylons_app.model import meta
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30 from pylons_app.model.db import User, Repository
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31 from sqlalchemy.exc import OperationalError
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32 from sqlalchemy.orm.exc import NoResultFound, MultipleResultsFound
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33 from webhelpers.pylonslib.secure_form import authentication_token
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34 import datetime
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35 import formencode
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36 import logging
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37 log = logging.getLogger(__name__)
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38
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39
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40 #this is needed to translate the messages using _() in validators
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41 class State_obj(object):
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42 _ = staticmethod(_)
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43
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44 #===============================================================================
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45 # VALIDATORS
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46 #===============================================================================
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47 class ValidAuthToken(formencode.validators.FancyValidator):
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48 messages = {'invalid_token':_('Token mismatch')}
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49
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50 def validate_python(self, value, state):
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51
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52 if value != authentication_token():
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53 raise formencode.Invalid(self.message('invalid_token', state,
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54 search_number=value), value, state)
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55 class ValidUsername(formencode.validators.FancyValidator):
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56
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57 def validate_python(self, value, state):
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58 if value in ['default', 'new_user']:
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59 raise formencode.Invalid(_('Invalid username'), value, state)
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60
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61 class ValidPassword(formencode.validators.FancyValidator):
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62
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63 def to_python(self, value, state):
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64 return get_crypt_password(value)
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65
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66 class ValidAuth(formencode.validators.FancyValidator):
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67 messages = {
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68 'invalid_password':_('invalid password'),
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69 'invalid_login':_('invalid user name'),
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70 'disabled_account':_('Your acccount is disabled')
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71
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72 }
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73 #error mapping
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74 e_dict = {'username':messages['invalid_login'],
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75 'password':messages['invalid_password']}
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76 e_dict_disable = {'username':messages['disabled_account']}
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77
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78 def validate_python(self, value, state):
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79 sa = meta.Session
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80 crypted_passwd = get_crypt_password(value['password'])
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81 username = value['username']
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82 try:
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83 user = sa.query(User).filter(User.username == username).one()
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84 except (NoResultFound, MultipleResultsFound, OperationalError) as e:
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85 log.error(e)
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86 user = None
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87 raise formencode.Invalid(self.message('invalid_password',
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88 state=State_obj), value, state,
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89 error_dict=self.e_dict)
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90 if user:
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91 if user.active:
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92 if user.username == username and user.password == crypted_passwd:
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93 from pylons_app.lib.auth import AuthUser
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94 auth_user = AuthUser()
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95 auth_user.username = username
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96 auth_user.is_authenticated = True
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97 auth_user.is_admin = user.admin
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98 auth_user.user_id = user.user_id
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99 session['hg_app_user'] = auth_user
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100 session.save()
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101 log.info('user %s is now authenticated', username)
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102
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103 try:
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104 user.last_login = datetime.datetime.now()
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105 sa.add(user)
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106 sa.commit()
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107 except (OperationalError) as e:
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108 log.error(e)
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109 sa.rollback()
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110
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111 return value
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112 else:
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113 log.warning('user %s not authenticated', username)
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114 raise formencode.Invalid(self.message('invalid_password',
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115 state=State_obj), value, state,
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116 error_dict=self.e_dict)
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117 else:
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118 log.warning('user %s is disabled', username)
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119 raise formencode.Invalid(self.message('disabled_account',
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120 state=State_obj),
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121 value, state,
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122 error_dict=self.e_dict_disable)
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123
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124
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125 class ValidRepoUser(formencode.validators.FancyValidator):
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126
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127 def to_python(self, value, state):
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128 sa = meta.Session
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129 try:
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130 self.user_db = sa.query(User).filter(User.username == value).one()
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131 except Exception:
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132 raise formencode.Invalid(_('This username is not valid'),
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133 value, state)
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134 return self.user_db.user_id
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135
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136 def ValidRepoName(edit=False):
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137 class _ValidRepoName(formencode.validators.FancyValidator):
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138
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139 def to_python(self, value, state):
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140 slug = h.repo_name_slug(value)
310
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141 if slug in ['_admin']:
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142 raise formencode.Invalid(_('This repository name is disallowed'),
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143 value, state)
265
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144 sa = meta.Session
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145 if sa.query(Repository).get(slug) and not edit:
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146 raise formencode.Invalid(_('This repository already exists'),
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147 value, state)
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148
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149 return slug
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150 return _ValidRepoName
296
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151
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152 class ValidPerms(formencode.validators.FancyValidator):
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153 messages = {'perm_new_user_name':_('This username is not valid')}
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154
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155 def to_python(self, value, state):
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156 perms_update = []
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157 perms_new = []
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158 #build a list of permission to update and new permission to create
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159 for k, v in value.items():
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160 if k.startswith('perm_'):
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161 if k.startswith('perm_new_user'):
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162 new_perm = value.get('perm_new_user', False)
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163 new_user = value.get('perm_new_user_name', False)
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164 if new_user and new_perm:
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165 if (new_user, new_perm) not in perms_new:
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166 perms_new.append((new_user, new_perm))
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167 else:
299
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168 usr = k[5:]
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169 if usr == 'default':
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170 if value['private']:
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171 #set none for default when updating to private repo
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172 v = 'repository.none'
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173 perms_update.append((usr, v))
296
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174 value['perms_updates'] = perms_update
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175 value['perms_new'] = perms_new
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176 sa = meta.Session
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177 for k, v in perms_new:
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178 try:
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179 self.user_db = sa.query(User).filter(User.username == k).one()
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180 except Exception:
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181 msg = self.message('perm_new_user_name',
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182 state=State_obj)
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183 raise formencode.Invalid(msg, value, state, error_dict={'perm_new_user_name':msg})
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184 return value
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185
186
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186 #===============================================================================
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187 # FORMS
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188 #===============================================================================
45
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189 class LoginForm(formencode.Schema):
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190 allow_extra_fields = True
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191 filter_extra_fields = True
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192 username = UnicodeString(
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193 strip=True,
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194 min=3,
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195 not_empty=True,
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196 messages={
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197 'empty':_('Please enter a login'),
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198 'tooShort':_('Enter a value %(min)i characters long or more')}
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199 )
0
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200
45
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201 password = UnicodeString(
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202 strip=True,
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203 min=3,
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204 not_empty=True,
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205 messages={
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206 'empty':_('Please enter a password'),
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207 'tooShort':_('Enter a value %(min)i characters long or more')}
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208 )
0
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209
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210
186
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211 #chained validators have access to all data
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212 chained_validators = [ValidAuth]
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213
238
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214 def UserForm(edit=False):
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215 class _UserForm(formencode.Schema):
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216 allow_extra_fields = True
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217 filter_extra_fields = True
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218 username = All(UnicodeString(strip=True, min=3, not_empty=True), ValidUsername)
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219 if edit:
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220 new_password = All(UnicodeString(strip=True, min=3, not_empty=False), ValidPassword)
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221 else:
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222 password = All(UnicodeString(strip=True, min=3, not_empty=False), ValidPassword)
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223 active = StringBoolean(if_missing=False)
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224 name = UnicodeString(strip=True, min=3, not_empty=True)
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225 lastname = UnicodeString(strip=True, min=3, not_empty=True)
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226 email = Email(not_empty=True)
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227
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228 return _UserForm
265
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229
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230 def RepoForm(edit=False):
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231 class _RepoForm(formencode.Schema):
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232 allow_extra_fields = True
296
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233 filter_extra_fields = False
265
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234 repo_name = All(UnicodeString(strip=True, min=1, not_empty=True), ValidRepoName(edit))
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235 description = UnicodeString(strip=True, min=3, not_empty=True)
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236 private = StringBoolean(if_missing=False)
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237
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238 if edit:
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239 user = All(Int(not_empty=True), ValidRepoUser)
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240
296
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241 chained_validators = [ValidPerms]
265
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242 return _RepoForm