gremmie@1
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1 """
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2 Views for the weblinks application.
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3
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4 """
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5 import random
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6 from django.shortcuts import render
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7 from django.core.paginator import InvalidPage
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8 from django.http import HttpResponse
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9 from django.http import HttpResponseBadRequest
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10 from django.http import HttpResponseRedirect
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11 from django.contrib.auth.decorators import login_required
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12 from django.shortcuts import get_object_or_404
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13 from django.core.urlresolvers import reverse
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14 from django.http import Http404
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15 from django.views.decorators.http import require_POST
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16
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17 from core.paginator import DiggPaginator
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18 from core.functions import email_admins
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19 from core.functions import get_page
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20 from weblinks.models import Category
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21 from weblinks.models import Link
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22 from weblinks.models import FlaggedLink
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23 from weblinks.forms import AddLinkForm
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24
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25 #######################################################################
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26
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27 LINKS_PER_PAGE = 10
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28
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29 def create_paginator(links):
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30 return DiggPaginator(links, LINKS_PER_PAGE, body=5, tail=3, margin=3, padding=2)
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31
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32 #######################################################################
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33
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34 def link_index(request):
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35 categories = Category.objects.all()
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36 total_links = Link.public_objects.all().count()
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37 return render(request, 'weblinks/index.html', {
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38 'categories': categories,
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39 'total_links': total_links,
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40 'top_menu': 'categories',
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41 'V3_DESIGN': True,
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42 })
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43
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44 #######################################################################
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45
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46 def new_links(request):
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47 links = Link.public_objects.order_by('-date_added')
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48 paginator = create_paginator(links)
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49 page = get_page(request.GET)
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50 try:
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51 the_page = paginator.page(page)
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52 except InvalidPage:
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53 raise Http404
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54
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55 return render(request, 'weblinks/link_summary.html', {
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56 'page': the_page,
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57 'title': 'Newest Links',
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58 'top_menu': 'new',
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59 'V3_DESIGN': True,
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60 })
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61
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62 #######################################################################
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63
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64 def popular_links(request):
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65 links = Link.public_objects.order_by('-hits')
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66 paginator = create_paginator(links)
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67 page = get_page(request.GET)
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68 try:
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69 the_page = paginator.page(page)
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70 except InvalidPage:
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71 raise Http404
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72 return render(request, 'weblinks/link_summary.html', {
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73 'page': the_page,
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74 'title': 'Popular Links',
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75 'top_menu': 'popular',
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76 'V3_DESIGN': True,
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77 })
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78
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79 #######################################################################
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80
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81 @login_required
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82 def add_link(request):
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83 if request.method == 'POST':
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84 add_form = AddLinkForm(request.POST)
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85 if add_form.is_valid():
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86 new_link = add_form.save(commit=False)
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87 new_link.user = request.user
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88 new_link.save()
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89 email_admins('New link for approval', """Hello,
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90
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91 A user has added a new link for your approval.
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92 """)
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93 return HttpResponseRedirect(reverse('weblinks-add_thanks'))
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94 else:
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95 add_form = AddLinkForm()
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96
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97 return render(request, 'weblinks/add_link.html', {
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98 'add_form': add_form,
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99 'top_menu': 'add',
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100 'V3_DESIGN': True,
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101 })
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102
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103 #######################################################################
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104
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105 @login_required
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106 def add_thanks(request):
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107 return render(request, 'weblinks/add_link.html', {
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108 'V3_DESIGN': True,
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109 'top_menu': 'add',
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110 })
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111
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112 #######################################################################
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113
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114 # Maps URL component to database field name for the links table:
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115
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116 LINK_FIELD_MAP = {
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117 'title': 'title',
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118 'date': '-date_added',
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119 'hits': '-hits'
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120 }
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121
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122 def view_links(request, slug, sort='title'):
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123 try:
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124 cat = Category.objects.get(slug=slug)
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125 except Category.DoesNotExist:
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126 raise Http404
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127
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128 if sort in LINK_FIELD_MAP:
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129 order_by = LINK_FIELD_MAP[sort]
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130 else:
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131 sort = 'title'
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132 order_by = LINK_FIELD_MAP['title']
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133
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134 links = Link.public_objects.filter(category=cat).order_by(order_by)
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135 paginator = create_paginator(links)
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136 page = get_page(request.GET)
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137 try:
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138 the_page = paginator.page(page)
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139 except InvalidPage:
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140 raise Http404
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141
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142 return render(request, 'weblinks/view_links.html', {
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143 's' : sort,
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144 'category' : cat,
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145 'page' : the_page,
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146 'V3_DESIGN': True,
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147 })
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148
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149 #######################################################################
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150
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151 def _visit_link(request, link):
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152 link.hits += 1
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153 link.save()
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154 return HttpResponseRedirect(link.url)
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155
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156 #######################################################################
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157
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158 @require_POST
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159 def visit(request, link_id):
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160 link = get_object_or_404(Link, pk = link_id)
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161 return _visit_link(request, link)
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162
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163 #######################################################################
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164
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165 def random_link(request):
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166 if request.method == 'POST':
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167 ids = Link.public_objects.values_list('id', flat=True)
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168 if not ids:
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169 raise Http404
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170 the_id = random.choice(ids)
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171 random_link = Link.public_objects.get(pk=the_id)
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172 return _visit_link(request, random_link)
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173
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174 return render(request, 'weblinks/random_link.html', {
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175 'top_menu': 'random',
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176 'V3_DESIGN': True,
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177 })
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178
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179 #######################################################################
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180
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181 @require_POST
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182 def report_link(request, link_id):
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183 """
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184 This function is the target of an AJAX POST to report a link as dead.
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185 """
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186 if not request.user.is_authenticated():
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187 return HttpResponse('Please login or register to report a broken link.')
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188
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189 try:
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190 link = Link.objects.get(pk=link_id)
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191 except Link.DoesNotExist:
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192 return HttpResponseBadRequest("That link doesn't exist.")
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193
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194 FlaggedLink.objects.create(link, request.user)
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195 return HttpResponse("The link was reported. A moderator will review the "
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196 "link shortly. Thanks for helping to improve the content on "
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197 "this site.")
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198
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199 #######################################################################
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200
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201 def link_detail(request, id):
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202 link = get_object_or_404(Link, pk=id)
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203 if not link.is_public:
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204 raise Http404
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205 return render(request, 'weblinks/link_detail.html', {
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206 'link': link,
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207 'V3_DESIGN': True,
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208 })
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