Mercurial > libervia-web

annotate libervia/pages/blog/view/page_meta.py @ 1247:a6c7f07f1e4d

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tasks: implicit tasks + Brython task: - implicit tasks are tasks launched for every site. - a first one is made for Brython: it will install Brython and copy suitable files and set template data if Brython code is written in page `_browser` subdirectory.
author Goffi <goffi@goffi.org>
date Sun, 26 Apr 2020 22:07:18 +0200
parents 8aff742d0dd0
children 6b7f9c3558cc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/env python3
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2
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3 import unicodedata
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4 import re
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5 import html
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6 from libervia.server.constants import Const as C
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7 from twisted.words.protocols.jabber import jid
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8 from twisted.internet import defer
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9 from sat.tools.common import data_objects
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10 from libervia.server import session_iface
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11 from sat.core.i18n import _
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12 from sat.tools.common.template import safe
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13 from sat.tools.common import uri
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14 from sat.tools.common import data_format
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15 from libervia.server import utils
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16 from libervia.server.utils import SubPage
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17 from sat.core.log import getLogger
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18
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19 log = getLogger(__name__)
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20
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21 """generic blog (with service/node provided)"""
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22 name = 'blog_view'
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23 template = "blog/articles.html"
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24 uri_handlers = {('pubsub', 'microblog'): 'microblog_uri'}
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25
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26 RE_TEXT_URL = re.compile(r'[^a-zA-Z,_]+')
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27 TEXT_MAX_LEN = 60
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28 TEXT_WORD_MIN_LENGHT = 4
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29 URL_LIMIT_MARK = 90 # if canonical URL is longer than that, text will not be appended
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30
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31
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32 def microblog_uri(self, uri_data):
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33 args = [uri_data['path'], uri_data['node']]
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34 if 'item' in uri_data:
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35 args.extend(['id', uri_data['item']])
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36 return self.getURL(*args)
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37
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38 def parse_url(self, request):
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39 """URL is /[service]/[node]/[filter_keyword]/[item]|[other]
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40
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41 if [node] is '@', default namespace is used
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42 if a value is unset, default one will be used
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43 keyword can be one of:
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44 id: next value is a item id
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45 tag: next value is a blog tag
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46 """
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47 data = self.getRData(request)
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48
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49 try:
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50 service = self.nextPath(request)
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51 except IndexError:
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52 data['service'] = ''
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53 else:
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54 try:
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55 data["service"] = jid.JID(service)
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56 except Exception:
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57 log.warning(_("bad service entered: {}").format(service))
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58 self.pageError(request, C.HTTP_BAD_REQUEST)
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59
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60 try:
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61 node = self.nextPath(request)
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62 except IndexError:
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63 node = '@'
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64 data['node'] = '' if node == '@' else node
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65
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66 try:
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67 filter_kw = data['filter_keyword'] = self.nextPath(request)
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68 except IndexError:
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69 filter_kw = '@'
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70 else:
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71 if filter_kw == '@':
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72 # No filter, this is used when a subpage is needed, notably Atom feed
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73 pass
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74 elif filter_kw == 'id':
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75 try:
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76 data['item'] = self.nextPath(request)
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77 except IndexError:
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78 self.pageError(request, C.HTTP_BAD_REQUEST)
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79 # we get one more argument in case text has been added to have a nice URL
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80 try:
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81 self.nextPath(request)
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82 except IndexError:
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83 pass
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84 elif filter_kw == 'tag':
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85 try:
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86 data['tag'] = self.nextPath(request)
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87 except IndexError:
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88 self.pageError(request, C.HTTP_BAD_REQUEST)
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89 else:
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90 # invalid filter keyword
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91 log.warning(_("invalid filter keyword: {filter_kw}").format(
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92 filter_kw=filter_kw))
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93 self.pageError(request, C.HTTP_BAD_REQUEST)
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94
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95 # if URL is parsed here, we'll have atom.xml available and we need to
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96 # add the link to the page
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97 atom_url = self.getURLByPath(
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98 SubPage('blog_view'),
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99 service,
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100 node,
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101 filter_kw,
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102 SubPage('blog_feed_atom'),
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103 )
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104 request.template_data['atom_url'] = atom_url
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105 request.template_data.setdefault('links', []).append({
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106 "href": atom_url,
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107 "type": "application/atom+xml",
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108 "rel": "alternate",
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109 "title": "{service}'s blog".format(service=service)})
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110
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111
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112 @defer.inlineCallbacks
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113 def appendComments(self, blog_items, identities, profile):
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114 for blog_item in blog_items:
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115 if identities is not None:
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116 author = blog_item.author_jid
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117 if not author:
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118 log.warning(_("no author found for item {item_id}").format(item_id=blog_item.id))
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119 else:
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120 if author not in identities:
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121 id_raw = yield self.host.bridgeCall(
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122 'identityGet', author, [], True, profile)
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123 identities[author] = data_format.deserialise(id_raw)
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124 for comment_data in blog_item.comments:
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125 service = comment_data['service']
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126 node = comment_data['node']
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127 try:
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128 comments_data = yield self.host.bridgeCall('mbGet',
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129 service,
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130 node,
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131 C.NO_LIMIT,
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132 [],
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133 {C.KEY_ORDER_BY: C.ORDER_BY_CREATION},
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134 profile)
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135 except Exception as e:
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136 log.warning(_("Can't get comments at {node} (service: {service}): {msg}").format(
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137 service=service,
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138 node=node,
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139 msg=e))
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140 continue
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141
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142 comments = data_objects.BlogItems(comments_data)
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143 blog_item.appendCommentsItems(comments)
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144 yield appendComments(self, comments, identities, profile)
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145
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146 @defer.inlineCallbacks
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147 def getBlogItems(self, request, service, node, item_id, extra, profile):
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148 try:
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149 if item_id:
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150 items_id = [item_id]
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151 else:
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152 items_id = []
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153 blog_data = yield self.host.bridgeCall('mbGet',
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154 service.userhost(),
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155 node,
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156 C.NO_LIMIT,
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157 items_id,
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158 extra,
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159 profile)
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160 except Exception as e:
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161 # FIXME: need a better way to test errors in bridge errback
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162 if "forbidden" in str(e):
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163 self.pageError(request, 401)
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164 else:
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165 log.warning(_("can't retrieve blog for [{service}]: {msg}".format(
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166 service = service.userhost(), msg=e)))
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167 blog_data = ([], {})
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168
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169 defer.returnValue(data_objects.BlogItems(blog_data))
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170
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171 @defer.inlineCallbacks
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172 def prepare_render(self, request):
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173 data = self.getRData(request)
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174 page_max = data.get("page_max", 10)
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175 # if the comments are not explicitly hidden, we show them
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176 service, node, item_id, show_comments = data.get('service', ''), data.get('node', ''), data.get('item'), data.get('show_comments', True)
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177 profile = self.getProfile(request)
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178 if profile is None:
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179 profile = C.SERVICE_PROFILE
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180 profile_connected = False
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181 else:
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182 profile_connected = True
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183
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184 ## pagination/filtering parameters
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185 if item_id:
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186 extra = {}
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187 else:
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188 extra = self.getPubsubExtra(request, page_max=page_max)
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189 tag = data.get('tag')
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190 if tag:
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191 extra['mam_filter_{}'.format(C.MAM_FILTER_CATEGORY)] = tag
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192
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193 ## main data ##
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194 # we get data from backend/XMPP here
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195 items = yield getBlogItems(self, request, service, node, item_id, extra, profile)
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196
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197 ## navigation ##
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198 # no let's fill service, node and pagination URLs
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199 template_data = request.template_data
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200 if 'service' not in template_data:
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201 template_data['service'] = service
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202 if 'node' not in template_data:
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203 template_data['node'] = node
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204 target_profile = template_data.get('target_profile')
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205
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206 if items:
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207 if not item_id:
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208 self.setPagination(request, items.metadata)
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209 else:
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210 if item_id:
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211 # if item id has been specified in URL and it's not found,
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212 # we must return an error
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213 self.pageError(request, C.HTTP_NOT_FOUND)
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214
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215 ## identities ##
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216 # identities are used to show nice nickname or avatars
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217 identities = template_data['identities'] = self.host.getSessionData(request, session_iface.ISATSession).identities
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218
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219 ## Comments ##
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220 # if comments are requested, we need to take them
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221 if show_comments:
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222 yield appendComments(self, items, identities, profile)
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223
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224 ## URLs ##
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225 # We will fill items_http_uri and tags_http_uri in template_data with suitable urls
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226 # if we know the profile, we use it instead of service + blog (nicer url)
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227 if target_profile is None:
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228 blog_base_url_item = self.getPageByName('blog_view').getURL(service.full(), node or '@', 'id')
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229 blog_base_url_tag = self.getPageByName('blog_view').getURL(service.full(), node or '@', 'tag')
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230 else:
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231 blog_base_url_item = self.getURLByNames([('user', [target_profile]), ('user_blog', ['id'])])
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232 blog_base_url_tag = self.getURLByNames([('user', [target_profile]), ('user_blog', ['tag'])])
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233 # we also set the background image if specified by user
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234 bg_img = yield self.host.bridgeCall('asyncGetParamA', 'Background', 'Blog page', 'value', -1, template_data['target_profile'])
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235 if bg_img:
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236 template_data['dynamic_style'] = safe("""
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237 :root {
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238 --bg-img: url("%s");
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239 }
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240 """ % html.escape(bg_img, True))
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241
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242 template_data['items'] = data['items'] = items
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diff changeset
243 if request.args.get(b'reverse') == ['1']:
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244 template_data['items'].items.reverse()
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245 template_data['items_http_uri'] = items_http_uri = {}
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246 template_data['tags_http_uri'] = tags_http_uri = {}
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247
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248
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249 for item in items:
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250 blog_canonical_url = '/'.join([blog_base_url_item, utils.quote(item.id)])
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251 if len(blog_canonical_url) > URL_LIMIT_MARK:
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252 blog_url = blog_canonical_url
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253 else:
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254 # we add text from title or body at the end of URL
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diff changeset
255 # to make it more human readable
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256 text = item.title or item.content
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257 # we change special chars to ascii one, trick found at https://stackoverflow.com/a/3194567
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258 text = unicodedata.normalize('NFD', text).encode('ascii', 'ignore').decode('utf-8')
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259 text = RE_TEXT_URL.sub(' ', text).lower()
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260 text = '-'.join([t for t in text.split() if t and len(t)>=TEXT_WORD_MIN_LENGHT])
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261 while len(text) > TEXT_MAX_LEN:
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262 if '-' in text:
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263 text = text.rsplit('-', 1)[0]
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264 else:
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265 text = text[:TEXT_MAX_LEN]
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266 if text:
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267 blog_url = blog_canonical_url + '/' + text
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268 else:
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269 blog_url = blog_canonical_url
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270
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271 items_http_uri[item.id] = self.host.getExtBaseURL(request, blog_url)
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272 for tag in item.tags:
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273 if tag not in tags_http_uri:
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274 tag_url = '/'.join([blog_base_url_tag, utils.quote(tag)])
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275 tags_http_uri[tag] = self.host.getExtBaseURL(request, tag_url)
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276
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277 # if True, page should display a comment box
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278 template_data['allow_commenting'] = data.get('allow_commenting', profile_connected)
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279
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280 # last but not least, we add a xmpp: link to the node
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281 uri_args = {'path': service.full()}
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282 if node:
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283 uri_args['node'] = node
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284 if item_id:
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285 uri_args['item'] = item_id
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286 template_data['xmpp_uri'] = uri.buildXMPPUri('pubsub', subtype='microblog', **uri_args)
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287
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288
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289 @defer.inlineCallbacks
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290 def on_data_post(self, request):
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291 profile = self.getProfile(request)
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292 if profile is None:
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293 self.pageError(request, C.HTTP_FORBIDDEN)
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294 type_ = self.getPostedData(request, 'type')
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295 if type_ == 'comment':
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296 service, node, body = self.getPostedData(request, ('service', 'node', 'body'))
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297
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298 if not body:
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299 self.pageError(request, C.HTTP_BAD_REQUEST)
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300 comment_data = {"content": body}
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301 try:
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302 yield self.host.bridgeCall('mbSend',
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303 service,
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304 node,
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305 data_format.serialise(comment_data),
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306 profile)
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307 except Exception as e:
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308 if "forbidden" in str(e):
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309 self.pageError(request, 401)
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310 else:
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311 raise e
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312 else:
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313 log.warning(_("Unhandled data type: {}").format(type_))