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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 datetime
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6 import random
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7 from django.shortcuts import render_to_response
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8 from django.template import RequestContext
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9 from django.contrib import auth
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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.db.models import Q
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15 from django.http import Http404
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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 weblinks.models import Category
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20 from weblinks.models import Link
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21 from weblinks.models import FlaggedLink
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22 from weblinks.forms import SearchForm
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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_to_response('weblinks/index.html', {
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38 'categories': categories,
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39 'total_links': total_links,
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40 },
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41 context_instance = RequestContext(request))
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42
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43 #######################################################################
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44
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45 def new_links(request):
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46 links = Link.public_objects.order_by('-date_added')[:LINKS_PER_PAGE]
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47 return render_to_response('weblinks/link_summary.html', {
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48 'links': links,
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49 'title': 'Newest Links',
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50 },
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51 context_instance = RequestContext(request))
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52
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53 #######################################################################
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54
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55 def popular_links(request):
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56 links = Link.public_objects.order_by('-hits')[:LINKS_PER_PAGE]
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57 return render_to_response('weblinks/link_summary.html', {
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58 'links': links,
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59 'title': 'Popular Links',
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60 },
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61 context_instance = RequestContext(request))
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62
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63 #######################################################################
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64
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65 @login_required
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66 def add_link(request):
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67 if request.method == 'POST':
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68 add_form = AddLinkForm(request.POST)
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69 if add_form.is_valid():
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70 new_link = add_form.save(commit=False)
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71 new_link.user = request.user
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72 new_link.is_public = False
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73 new_link.save()
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74 email_admins('New link for approval', """Hello,
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75
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76 A user has added a new link for your approval.
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77 """)
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78 return HttpResponseRedirect(reverse('weblinks.views.add_thanks'))
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79 else:
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80 add_form = AddLinkForm()
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81
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82 return render_to_response('weblinks/add_link.html', {
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83 'add_form': add_form,
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84 },
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85 context_instance = RequestContext(request))
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86
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87 #######################################################################
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88
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89 @login_required
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90 def add_thanks(request):
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91 return render_to_response('weblinks/add_link.html', {
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92 },
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93 context_instance = RequestContext(request))
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94
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95 #######################################################################
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96
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97 # Maps URL component to database field name for the links table:
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98
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99 LINK_FIELD_MAP = {
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100 'title': 'title',
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101 'date': '-date_added',
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102 'hits': '-hits'
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103 }
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104
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105 def view_links(request, category, sort='title', page='1'):
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106 try:
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107 cat = Category.objects.get(pk=category)
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108 except Category.DoesNotExist:
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109 raise Http404
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110
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111 if sort in LINK_FIELD_MAP:
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112 order_by = LINK_FIELD_MAP[sort]
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113 else:
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114 sort = 'title'
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115 order_by = LINK_FIELD_MAP['title']
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116
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117 links = Link.public_objects.filter(category = category).order_by(order_by)
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118 paginator = create_paginator(links)
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119 try:
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120 the_page = paginator.page(int(page))
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121 except InvalidPage:
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122 raise Http404
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123
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124 return render_to_response('weblinks/view_links.html', {
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125 's' : sort,
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126 'category' : cat,
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127 'page' : the_page,
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128 },
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129 context_instance = RequestContext(request))
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130
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131 #######################################################################
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132
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133 def _visit_link(request, link):
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134 link.hits += 1
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135 link.save()
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136 return HttpResponseRedirect(link.url)
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137
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138 #######################################################################
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139
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140 def visit(request, link_id):
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141 link = get_object_or_404(Link, pk = link_id)
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142 return _visit_link(request, link)
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143
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144 #######################################################################
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145
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146 def random_link(request):
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147 ids = Link.public_objects.values_list('id', flat=True)
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148 if not ids:
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149 raise Http404
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150 id = random.choice(ids)
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151 random_link = Link.public_objects.get(pk=id)
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152 return _visit_link(request, random_link)
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153
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154 #######################################################################
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155
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156 @login_required
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157 def report_link(request, link_id):
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158 link = get_object_or_404(Link, pk = link_id)
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159 if request.method == "POST":
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160 FlaggedLink.objects.create(link, request.user)
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161 email_admins('A Link Has Been Flagged as Broken', """Hello,
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162
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163 A user has flagged a link as broken.
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164 """)
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165 return HttpResponseRedirect(reverse('weblinks.views.report_thanks', args = (link_id, )))
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166
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167 return render_to_response('weblinks/report_link.html', {
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168 'link': link,
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169 'report_thanks': False,
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170 },
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171 context_instance = RequestContext(request))
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172
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173
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174 #######################################################################
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175
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176 @login_required
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177 def report_thanks(request, link_id):
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178 link = get_object_or_404(Link, pk = link_id)
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179 return render_to_response('weblinks/report_link.html', {
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180 'link': link,
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181 'report_thanks': True,
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182 },
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183 context_instance = RequestContext(request))
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184
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185 #######################################################################
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186
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187 def search_links(request, page=1):
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188 if request.method == 'POST':
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189 form = SearchForm(request.POST)
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190 if form.is_valid():
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191 query_text = form.query()
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192 page = 1
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193 else:
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194 return HttpResponseRedirect(reverse('weblinks.views.link_index'))
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195 else:
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196 if 'query' in request.GET:
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197 query_text = request.GET['query']
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198 else:
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199 return HttpResponseRedirect(reverse('weblinks.views.link_index'))
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200
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201 links = Link.public_objects.filter(
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202 Q(title__icontains = query_text) |
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203 Q(description__icontains = query_text)).order_by('title')
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204 paginator = create_paginator(links)
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205 try:
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206 the_page = paginator.page(int(page))
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207 except EmptyPage:
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208 links = Link.public_objects.none()
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209 except InvalidPage:
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210 raise Http404
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211
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212 return render_to_response('weblinks/search_results.html', {
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213 'query': query_text,
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214 'page': the_page,
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215 },
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216 context_instance = RequestContext(request))
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217
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218 #######################################################################
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219
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220 def link_detail(request, id):
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221 link = get_object_or_404(Link, pk=id)
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222 return render_to_response('weblinks/link_detail.html', {
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223 'link': link,
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224 },
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225 context_instance = RequestContext(request))
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