Mercurial > libervia-web

annotate libervia/pages/blog/view/page_meta.py @ 1140:e1a953512f72

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pages (blog/view): pagination improvments: - getBlogData renamed to getBlogItems and only returns BlogItems objects, blog_data are not returned anymore as they are already included in the metadata attribute - desired page size can be specified using "page_max" key in request data - better use of RSM data to know if we should set previous or next page URLs - don't display anymore the first page is no items are found, this was confusing and not really making sense
author Goffi <goffi@goffi.org>
date Fri, 11 Jan 2019 16:45:01 +0100
parents dfd6545a205a
children 02fc28aac2b6
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rev   line source
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1 #!/usr/bin/env python2.7
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2 # -*- coding: utf-8 -*-
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3 from libervia.server.constants import Const as C
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4 from twisted.words.protocols.jabber import jid
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5 from twisted.internet import defer
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6 from sat.tools.common import data_objects
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7 from libervia.server import session_iface
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8 from sat.core.i18n import _
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9 from sat.tools.common.template import safe
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10 from sat.tools.common import uri
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11 from libervia.server import utils
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12 import unicodedata
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13 import re
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14 import cgi
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15 from sat.core.log import getLogger
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16 log = getLogger('pages/blog/view')
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17
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18 """generic blog (with service/node provided)"""
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19 name = u'blog_view'
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20 template = u"blog/articles.html"
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21 uri_handlers = {(u'pubsub', u'microblog'): 'microblog_uri'}
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22
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23 RE_TEXT_URL = re.compile(ur'[^a-zA-Z,_]+')
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24 TEXT_MAX_LEN = 60
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25 TEXT_WORD_MIN_LENGHT = 4
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26 URL_LIMIT_MARK = 90 # if canonical URL is longer than that, text will not be appended
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27
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28
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29 def microblog_uri(self, uri_data):
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30 args = [uri_data[u'path'], uri_data[u'node']]
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31 if u'item' in uri_data:
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32 args.extend([u'id', uri_data[u'item']])
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33 return self.getURL(*args)
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34
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35 def parse_url(self, request):
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36 """URL is /[service]/[node]/[filter_keyword]/[item]|[other]
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37
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38 if [node] is '@', default namespace is used
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39 if a value is unset, default one will be used
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40 keyword can be one of:
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41 id: next value is a item id
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42 tag: next value is a blog tag
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43 """
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44 data = self.getRData(request)
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45
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46 try:
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47 service = self.nextPath(request)
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48 except IndexError:
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49 data['service'] = u''
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50 else:
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51 try:
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52 data[u"service"] = jid.JID(service)
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53 except Exception:
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54 log.warning(_(u"bad service entered: {}").format(service))
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55 self.pageError(request, C.HTTP_BAD_REQUEST)
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56
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57 try:
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58 data['node'] = self.nextPath(request)
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59 except IndexError:
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60 data['node'] = u''
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61 else:
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62 if data['node'] == u'@':
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63 data['node'] = u''
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64
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65 try:
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66 filter_kw = data['filter_keyword'] = self.nextPath(request)
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67 except IndexError:
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68 pass
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69 else:
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70 if filter_kw == u'id':
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71 try:
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72 data[u'item'] = self.nextPath(request)
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73 except IndexError:
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74 self.pageError(request, C.HTTP_BAD_REQUEST)
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75 # we get one more argument in case text has been added to have a nice URL
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76 try:
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77 self.nextPath(request)
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78 except IndexError:
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79 pass
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80 elif filter_kw == u'tag':
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81 try:
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82 data[u'tag'] = self.nextPath(request)
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83 except IndexError:
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84 self.pageError(request, C.HTTP_BAD_REQUEST)
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85 else:
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86 # invalid filter keyword
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87 log.warning(_(u"invalid filter keyword: {filter_kw}").format(filter_kw=filter_kw))
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88 self.pageError(request, C.HTTP_BAD_REQUEST)
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89
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90
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91 @defer.inlineCallbacks
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92 def appendComments(self, blog_items, identities, profile):
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93 for blog_item in blog_items:
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94 if identities is not None:
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95 author = blog_item.author_jid
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96 if not author:
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97 log.warning(_(u"no author found for item {item_id}").format(item_id=blog_item.id))
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98 else:
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99 if author not in identities:
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100 identities[author] = yield self.host.bridgeCall(u'identityGet', author, profile)
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101 for comment_data in blog_item.comments:
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102 service = comment_data[u'service']
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103 node = comment_data[u'node']
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104 try:
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105 comments_data = yield self.host.bridgeCall(u'mbGet',
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106 service,
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107 node,
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108 C.NO_LIMIT,
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109 [],
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110 {C.KEY_ORDER_BY: C.ORDER_BY_CREATION},
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111 profile)
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112 except Exception as e:
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113 log.warning(_(u"Can't get comments at {node} (service: {service}): {msg}").format(
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114 service=service,
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115 node=node,
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116 msg=e))
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117 continue
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118
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119 comments = data_objects.BlogItems(comments_data)
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120 blog_item.appendCommentsItems(comments)
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121 yield appendComments(self, comments, identities, profile)
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122
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123 @defer.inlineCallbacks
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124 def getBlogItems(self, request, service, node, item_id, extra, profile):
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125 try:
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126 if item_id:
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127 items_id = [item_id]
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128 else:
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129 items_id = []
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130 blog_data = yield self.host.bridgeCall(u'mbGet',
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131 service.userhost(),
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132 node,
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133 C.NO_LIMIT,
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134 items_id,
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135 extra,
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136 profile)
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137 except Exception as e:
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138 # FIXME: need a better way to test errors in bridge errback
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139 if u"forbidden" in unicode(e):
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140 self.pageError(request, 401)
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141 else:
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142 log.warning(_(u"can't retrieve blog for [{service}]: {msg}".format(
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143 service = service.userhost(), msg=e)))
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144 blog_data = ([], {})
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145
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146 defer.returnValue(data_objects.BlogItems(blog_data))
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147
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148 @defer.inlineCallbacks
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149 def prepare_render(self, request):
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150 data = self.getRData(request)
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151 page_max = data.get(u"page_max", 10)
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152 # if the comments are not explicitly hidden, we show them
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153 service, node, item_id, show_comments = data.get(u'service', u''), data.get(u'node', u''), data.get(u'item'), data.get(u'show_comments', True)
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154 profile = self.getProfile(request)
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155 if profile is None:
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156 profile = C.SERVICE_PROFILE
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157 profile_connected = False
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158 else:
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159 profile_connected = True
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160
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161 ## pagination/filtering parameters
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162 params = self.getAllPostedData(request, multiple=False)
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163 if item_id:
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164 extra = {}
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165 else:
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166 extra = {
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167 C.KEY_ORDER_BY: C.ORDER_BY_CREATION,
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168 u'rsm_max': unicode(page_max),
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169 }
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170 if u'after' in params:
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171 extra[u'rsm_after'] = params[u'after']
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172 elif u'before' in params:
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173 extra[u'rsm_before'] = params[u'before']
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174 tag = data.get('tag')
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175 if tag:
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176 extra[u'mam_filter_{}'.format(C.MAM_FILTER_CATEGORY)] = tag
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177
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178 ## main data ##
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179 # we get data from backend/XMPP here
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180 items = yield getBlogItems(self, request, service, node, item_id, extra, profile)
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181
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182 ## navigation ##
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183 # no let's fill service, node and pagination URLs
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184 template_data = request.template_data
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185 if u'service' not in template_data:
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186 template_data[u'service'] = service
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187 if u'node' not in template_data:
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188 template_data[u'node'] = node
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189 target_profile = template_data.get(u'target_profile')
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190
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191 if items:
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192 if items.with_rsm and not item_id:
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193 last_id = items.rsm_last
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194
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195 if not items.complete:
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196 # we also show the page next button if complete is None because we
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197 # can't know where we are in the feed in this case.
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198 template_data['older_url'] = self.getParamURL(request, after=last_id)
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199 if items.metadata.get("rsm_index", 1) > 0:
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200 # We only show previous button if it's not the first page already.
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201 # If we have no index, we default to display the button anyway
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202 # as we can't know if we are on the first page or not.
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203 first_id = items.rsm_first
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204 template_data['newer_url'] = self.getParamURL(request, before=first_id)
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205 else:
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diff changeset
206 if item_id:
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diff changeset
207 # if item id has been specified in URL and it's not found,
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diff changeset
208 # we must return an error
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209 self.pageError(request, C.HTTP_NOT_FOUND)
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210
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211
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diff changeset
212 ## identities ##
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213 # identities are used to show nice nickname or avatars
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214 identities = template_data[u'identities'] = self.host.getSessionData(request, session_iface.ISATSession).identities
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215
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216 ## Comments ##
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217 # if comments are requested, we need to take them
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218 if show_comments:
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219 yield appendComments(self, items, identities, profile)
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220
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221 ## URLs ##
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222 # We will fill items_http_uri and tags_http_uri in template_data with suitable urls
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223 # if we know the profile, we use it instead of service + blog (nicer url)
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224 if target_profile is None:
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225 blog_base_url_item = self.getPageByName(u'blog_view').getURL(service.full(), node or u'@', u'id')
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226 blog_base_url_tag = self.getPageByName(u'blog_view').getURL(service.full(), node or u'@', u'tag')
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diff changeset
227 else:
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228 blog_base_url_item = self.getURLByNames([(u'user', [target_profile]), (u'user_blog', [u'id'])])
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229 blog_base_url_tag = self.getURLByNames([(u'user', [target_profile]), (u'user_blog', [u'tag'])])
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230 # we also set the background image if specified by user
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diff changeset
231 bg_img = yield self.host.bridgeCall(u'asyncGetParamA', u'Background', u'Blog page', u'value', -1, template_data[u'target_profile'])
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diff changeset
232 if bg_img:
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233 template_data['dynamic_style'] = safe(u"""
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diff changeset
234 :root {
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diff changeset
235 --bg-img: url("%s");
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diff changeset
236 }
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diff changeset
237 """ % cgi.escape(bg_img, True))
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diff changeset
238
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diff changeset
239 template_data[u'items'] = data[u'items'] = items
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diff changeset
240 if request.args.get('reverse') == ['1']:
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diff changeset
241 template_data[u'items'].items.reverse()
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diff changeset
242 template_data[u'items_http_uri'] = items_http_uri = {}
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243 template_data[u'tags_http_uri'] = tags_http_uri = {}
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244
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diff changeset
245
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diff changeset
246 for item in items:
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247 blog_canonical_url = u'/'.join([blog_base_url_item, utils.quote(item.id)])
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diff changeset
248 if len(blog_canonical_url) > URL_LIMIT_MARK:
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249 blog_url = blog_canonical_url
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diff changeset
250 else:
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diff changeset
251 # we add text from title or body at the end of URL
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diff changeset
252 # to make it more human readable
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253 text = item.title or item.content
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diff changeset
254 # we change special chars to ascii one, trick found at https://stackoverflow.com/a/3194567
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255 text = unicodedata.normalize('NFD', text).encode('ascii', 'ignore')
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256 text = RE_TEXT_URL.sub(u' ', text).lower()
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diff changeset
257 text = u'-'.join([t for t in text.split() if t and len(t)>=TEXT_WORD_MIN_LENGHT])
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diff changeset
258 while len(text) > TEXT_MAX_LEN:
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Goffi <goffi@goffi.org>
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diff changeset
259 if u'-' in text:
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Goffi <goffi@goffi.org>
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diff changeset
260 text = text.rsplit(u'-', 1)[0]
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diff changeset
261 else:
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diff changeset
262 text = text[:TEXT_MAX_LEN]
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Goffi <goffi@goffi.org>
parents:
diff changeset
263 if text:
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diff changeset
264 blog_url = blog_canonical_url + u'/' + text
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Goffi <goffi@goffi.org>
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diff changeset
265 else:
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diff changeset
266 blog_url = blog_canonical_url
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diff changeset
267
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268 items_http_uri[item.id] = self.host.getExtBaseURL(request, blog_url)
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diff changeset
269 for tag in item.tags:
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diff changeset
270 if tag not in tags_http_uri:
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diff changeset
271 tag_url = u'/'.join([blog_base_url_tag, utils.quote(tag)])
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diff changeset
272 tags_http_uri[tag] = self.host.getExtBaseURL(request, tag_url)
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diff changeset
273
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diff changeset
274 # if True, page should display a comment box
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275 template_data[u'allow_commenting'] = data.get(u'allow_commenting', profile_connected)
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276
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parents:
diff changeset
277 # last but not least, we add a xmpp: link to the node
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diff changeset
278 uri_args = {u'path': service.full()}
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279 if node:
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280 uri_args[u'node'] = node
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Goffi <goffi@goffi.org>
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281 if item_id:
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Goffi <goffi@goffi.org>
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282 uri_args[u'item'] = item_id
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283 template_data[u'xmpp_uri'] = uri.buildXMPPUri(u'pubsub', subtype='microblog', **uri_args)
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284
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285
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286 @defer.inlineCallbacks
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287 def on_data_post(self, request):
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288 profile = self.getProfile(request)
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289 if profile is None:
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290 self.pageError(request, C.HTTP_UNAUTHORIZED)
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291 type_ = self.getPostedData(request, u'type')
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292 if type_ == u'comment':
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293 service, node, body = self.getPostedData(request, (u'service', u'node', u'body'))
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294
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295 if not body:
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296 self.pageError(request, C.HTTP_BAD_REQUEST)
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297 comment_data = {u"content": body}
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298 try:
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299 yield self.host.bridgeCall(u'mbSend', service, node, comment_data, profile)
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300 except Exception as e:
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301 if u"forbidden" in unicode(e):
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302 self.pageError(request, 401)
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303 else:
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304 raise e
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Goffi <goffi@goffi.org>
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305 else:
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306 log.warning(_(u"Unhandled data type: {}").format(type_))