Mercurial > libervia-web

annotate libervia/pages/blog/view/page_meta.py @ 1466:cff720e26089

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pages (blog/view): activate pagination when a single item is shown: `previous_page_url` and `next_page_url` are set when `item_id` is used. For now, they are both activated even if there is no item before or after, as it would request to make extra request to check it. This may be improved in 0.9 by using internal cache. fix 399
author Goffi <goffi@goffi.org>
date Thu, 30 Sep 2021 17:04:22 +0200
parents 6fc41f000d24
children 10ccad665d57
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 html
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4 from libervia.server.constants import Const as C
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5 from twisted.words.protocols.jabber import jid
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6 from twisted.web import server
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7 from sat.core.i18n import _, D_
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8 from sat.tools.common.template import safe
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9 from sat.tools.common import uri
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10 from sat.tools.common import data_format
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11 from sat.tools.common import regex
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12 from sat.core.log import getLogger
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13 from libervia.server import utils
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14 from libervia.server.utils import SubPage
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15
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16 log = getLogger(__name__)
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17
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18 """generic blog (with service/node provided)"""
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19 name = 'blog_view'
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20 template = "blog/articles.html"
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21 uri_handlers = {('pubsub', 'microblog'): 'microblog_uri'}
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22
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23 URL_LIMIT_MARK = 90 # if canonical URL is longer than that, text will not be appended
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24
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25
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26 def microblog_uri(self, uri_data):
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27 args = [uri_data['path'], uri_data['node']]
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28 if 'item' in uri_data:
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29 args.extend(['id', uri_data['item']])
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30 return self.getURL(*args)
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31
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32 def parse_url(self, request):
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33 """URL is /[service]/[node]/[filter_keyword]/[item]|[other]
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34
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35 if [node] is '@', default namespace is used
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36 if a value is unset, default one will be used
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37 keyword can be one of:
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38 id: next value is a item id
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39 tag: next value is a blog tag
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40 """
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41 data = self.getRData(request)
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42
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43 try:
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44 service = self.nextPath(request)
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45 except IndexError:
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46 data['service'] = ''
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47 else:
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48 try:
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49 data["service"] = jid.JID(service)
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50 except Exception:
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51 log.warning(_("bad service entered: {}").format(service))
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52 self.pageError(request, C.HTTP_BAD_REQUEST)
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53
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54 try:
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55 node = self.nextPath(request)
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56 except IndexError:
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57 node = '@'
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58 data['node'] = '' if node == '@' else node
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59
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60 try:
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61 filter_kw = data['filter_keyword'] = self.nextPath(request)
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62 except IndexError:
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63 filter_kw = '@'
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64 else:
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65 if filter_kw == '@':
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66 # No filter, this is used when a subpage is needed, notably Atom feed
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67 pass
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68 elif filter_kw == 'id':
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69 try:
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70 data['item'] = self.nextPath(request)
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71 except IndexError:
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72 self.pageError(request, C.HTTP_BAD_REQUEST)
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73 # we get one more argument in case text has been added to have a nice URL
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74 try:
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75 self.nextPath(request)
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76 except IndexError:
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77 pass
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78 elif filter_kw == 'tag':
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79 try:
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80 data['tag'] = self.nextPath(request)
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81 except IndexError:
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82 self.pageError(request, C.HTTP_BAD_REQUEST)
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83 else:
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84 # invalid filter keyword
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85 log.warning(_("invalid filter keyword: {filter_kw}").format(
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86 filter_kw=filter_kw))
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87 self.pageError(request, C.HTTP_BAD_REQUEST)
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88
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89 # if URL is parsed here, we'll have atom.xml available and we need to
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90 # add the link to the page
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91 atom_url = self.getURLByPath(
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92 SubPage('blog_view'),
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93 service,
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94 node,
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95 filter_kw,
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96 SubPage('blog_feed_atom'),
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97 )
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98 request.template_data['atom_url'] = atom_url
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99 request.template_data.setdefault('links', []).append({
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100 "href": atom_url,
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101 "type": "application/atom+xml",
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102 "rel": "alternate",
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103 "title": "{service}'s blog".format(service=service)})
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104
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105
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106 def add_breadcrumb(self, request, breadcrumbs):
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107 data = self.getRData(request)
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108 breadcrumbs.append({
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109 "label": D_("Feed"),
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110 "url": self.getURL(data["service"].full(), data.get("node", "@"))
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111 })
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112 if "item" in data:
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113 breadcrumbs.append({
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114 "label": D_("Post"),
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115 })
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116
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117
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118 async def appendComments(self, request, blog_items, profile):
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119 await self.fillMissingIdentities(
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120 request, [i['author_jid'] for i in blog_items['items']])
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121 for blog_item in blog_items['items']:
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122 for comment_data in blog_item['comments']:
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123 service = comment_data['service']
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124 node = comment_data['node']
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125 try:
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126 comments_data = await self.host.bridgeCall('mbGet',
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127 service,
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128 node,
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129 C.NO_LIMIT,
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130 [],
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131 {C.KEY_ORDER_BY: C.ORDER_BY_CREATION},
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132 profile)
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133 except Exception as e:
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134 log.warning(
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135 _("Can't get comments at {node} (service: {service}): {msg}").format(
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136 service=service,
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137 node=node,
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138 msg=e))
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139 comment_data['items'] = []
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140 continue
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141
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142 comments = data_format.deserialise(comments_data)
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143 comment_data['items'] = comments['items']
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144 await appendComments(self, request, comments, profile)
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145
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146 async def getBlogItems(
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147 self,
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148 request: server.Request,
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149 service: jid.JID,
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150 node: str,
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151 item_id,
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152 extra: dict,
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153 profile: str
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154 ) -> dict:
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155 try:
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156 if item_id:
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157 items_id = [item_id]
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158 else:
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159 items_id = []
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160 blog_data = await self.host.bridgeCall('mbGet',
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161 service.userhost(),
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162 node,
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163 C.NO_LIMIT,
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164 items_id,
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165 extra,
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166 profile)
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167 except Exception as e:
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168 # FIXME: need a better way to test errors in bridge errback
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169 if "forbidden" in str(e):
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170 self.pageError(request, 401)
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171 else:
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172 log.warning(_("can't retrieve blog for [{service}]: {msg}".format(
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173 service = service.userhost(), msg=e)))
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174 blog_data = {"items": []}
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175 else:
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176 blog_data = data_format.deserialise(blog_data)
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177
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178 return blog_data
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179
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180 async def prepare_render(self, request):
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181 data = self.getRData(request)
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182 template_data = request.template_data
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183 page_max = data.get("page_max", 10)
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184 # if the comments are not explicitly hidden, we show them
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185 service, node, item_id, show_comments = (
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186 data.get('service', ''),
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187 data.get('node', ''),
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188 data.get('item'),
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189 data.get('show_comments', True)
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190 )
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191 profile = self.getProfile(request)
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192 if profile is None:
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193 profile = C.SERVICE_PROFILE
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194 profile_connected = False
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195 else:
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196 profile_connected = True
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197
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198 ## pagination/filtering parameters
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199 if item_id:
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200 extra = {}
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201 else:
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202 extra = self.getPubsubExtra(request, page_max=page_max)
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203 tag = data.get('tag')
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204 if tag:
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205 extra[f'mam_filter_{C.MAM_FILTER_CATEGORY}'] = tag
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206 self.handleSearch(request, extra)
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207
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208 ## main data ##
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209 # we get data from backend/XMPP here
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210 blog_items = await getBlogItems(self, request, service, node, item_id, extra, profile)
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211
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212 ## navigation ##
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213 # no let's fill service, node and pagination URLs
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214 if 'service' not in template_data:
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215 template_data['service'] = service
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216 if 'node' not in template_data:
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217 template_data['node'] = node
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218 target_profile = template_data.get('target_profile')
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219
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220 if blog_items:
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221 if item_id:
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222 template_data["previous_page_url"] = self.getURL(
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223 service.full(),
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224 node,
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225 before=item_id,
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226 page_max=1
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227 )
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228 template_data["next_page_url"] = self.getURL(
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229 service.full(),
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230 node,
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231 after=item_id,
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232 page_max=1
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233 )
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234 blog_items["rsm"] = {
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235 "last": item_id,
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236 "first": item_id,
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237 }
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238 blog_items["complete"] = False
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239 else:
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240 self.setPagination(request, blog_items)
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241 else:
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242 if item_id:
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243 # if item id has been specified in URL and it's not found,
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244 # we must return an error
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245 self.pageError(request, C.HTTP_NOT_FOUND)
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246
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247 ## identities ##
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248 # identities are used to show nice nickname or avatars
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249 await self.fillMissingIdentities(request, [i['author_jid'] for i in blog_items['items']])
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250
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251 ## Comments ##
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252 # if comments are requested, we need to take them
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253 if show_comments:
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254 await appendComments(self, request, blog_items, profile)
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255
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256 ## URLs ##
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257 # We will fill items_http_uri and tags_http_uri in template_data with suitable urls
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258 # if we know the profile, we use it instead of service + blog (nicer url)
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259 if target_profile is None:
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260 blog_base_url_item = self.getPageByName('blog_view').getURL(service.full(), node or '@', 'id')
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261 blog_base_url_tag = self.getPageByName('blog_view').getURL(service.full(), node or '@', 'tag')
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262 else:
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263 blog_base_url_item = self.getURLByNames([('user', [target_profile]), ('user_blog', ['id'])])
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264 blog_base_url_tag = self.getURLByNames([('user', [target_profile]), ('user_blog', ['tag'])])
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265 # we also set the background image if specified by user
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266 bg_img = await self.host.bridgeCall('asyncGetParamA', 'Background', 'Blog page', 'value', -1, template_data['target_profile'])
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267 if bg_img:
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268 template_data['dynamic_style'] = safe("""
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269 :root {
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270 --bg-img: url("%s");
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271 }
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272 """ % html.escape(bg_img, True))
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273
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274 template_data['blog_items'] = data['blog_items'] = blog_items
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275 if request.args.get(b'reverse') == ['1']:
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276 template_data['blog_items'].items.reverse()
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277 template_data['items_http_uri'] = items_http_uri = {}
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278 template_data['tags_http_uri'] = tags_http_uri = {}
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279
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280
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281 for item in blog_items['items']:
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282 blog_canonical_url = '/'.join([blog_base_url_item, utils.quote(item['id'])])
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283 if len(blog_canonical_url) > URL_LIMIT_MARK:
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284 blog_url = blog_canonical_url
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285 elif '-' not in item['id']:
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286 # we add text from title or body at the end of URL
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287 # to make it more human readable
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288 # we do it only if there is no "-", as a "-" probably means that
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289 # item's id is already user friendly.
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290 # TODO: to be removed, this is only kept for a transition period until
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291 # user friendly item IDs are more common.
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292 text = regex.urlFriendlyText(item.get('title', item['content']))
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293 if text:
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294 blog_url = blog_canonical_url + '/' + text
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295 else:
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296 blog_url = blog_canonical_url
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297 else:
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298 blog_url = blog_canonical_url
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299
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300 items_http_uri[item['id']] = self.host.getExtBaseURL(request, blog_url)
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301 for tag in item['tags']:
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302 if tag not in tags_http_uri:
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303 tag_url = '/'.join([blog_base_url_tag, utils.quote(tag)])
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304 tags_http_uri[tag] = self.host.getExtBaseURL(request, tag_url)
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305
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306 # if True, page should display a comment box
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307 template_data['allow_commenting'] = data.get('allow_commenting', profile_connected)
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308
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309 # last but not least, we add a xmpp: link to the node
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310 uri_args = {'path': service.full()}
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311 if node:
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312 uri_args['node'] = node
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313 if item_id:
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314 uri_args['item'] = item_id
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315 template_data['xmpp_uri'] = uri.buildXMPPUri('pubsub', subtype='microblog', **uri_args)
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316
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317
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318 async def on_data_post(self, request):
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319 profile = self.getProfile(request)
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320 if profile is None:
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321 self.pageError(request, C.HTTP_FORBIDDEN)
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322 type_ = self.getPostedData(request, 'type')
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323 if type_ == 'comment':
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324 service, node, body = self.getPostedData(request, ('service', 'node', 'body'))
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325
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326 if not body:
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327 self.pageError(request, C.HTTP_BAD_REQUEST)
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328 comment_data = {"content": body}
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329 try:
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330 await self.host.bridgeCall('mbSend',
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331 service,
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332 node,
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333 data_format.serialise(comment_data),
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334 profile)
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335 except Exception as e:
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336 if "forbidden" in str(e):
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337 self.pageError(request, 401)
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338 else:
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339 raise e
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340 else:
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341 log.warning(_("Unhandled data type: {}").format(type_))