--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gpp/weblinks/views.py	Mon Apr 06 02:43:12 2009 +0000
@@ -0,0 +1,226 @@
+"""
+Views for the weblinks application.
+"""
+
+import datetime
+import random
+from django.shortcuts import render_to_response
+from django.template import RequestContext
+from django.contrib import auth
+from django.http import HttpResponseRedirect
+from django.contrib.auth.decorators import login_required
+from django.shortcuts import get_object_or_404
+from django.core.urlresolvers import reverse
+from django.db.models import Q
+from django.http import Http404
+
+from core.paginator import DiggPaginator
+from core.functions import email_admins
+from weblinks.models import Category
+from weblinks.models import Link
+from weblinks.models import FlaggedLink
+from weblinks.forms import SearchForm
+from weblinks.forms import AddLinkForm
+
+#######################################################################
+
+LINKS_PER_PAGE = 10
+
+def create_paginator(links):
+   return DiggPaginator(links, LINKS_PER_PAGE, body=5, tail=3, margin=3, padding=2)
+
+#######################################################################
+
+def link_index(request):
+   categories = Category.objects.all()
+   total_links = Link.public_objects.all().count()
+   form = SearchForm()
+   return render_to_response('weblinks/index.html', {
+      'categories': categories, 
+      'total_links': total_links,
+      'search_form': form,
+      },
+      context_instance = RequestContext(request))
+
+#######################################################################
+
+def new_links(request):
+   links = Link.public_objects.order_by('-date_added')[:LINKS_PER_PAGE]
+   return render_to_response('weblinks/link_summary.html', {
+      'links': links, 
+      'title': 'Newest Links',
+      'search_form': SearchForm(),
+      },
+      context_instance = RequestContext(request))
+
+#######################################################################
+
+def popular_links(request):
+   links = Link.public_objects.order_by('-hits')[:LINKS_PER_PAGE]
+   return render_to_response('weblinks/link_summary.html', {
+      'links': links, 
+      'title': 'Popular Links',
+      'search_form': SearchForm(),
+      },
+      context_instance = RequestContext(request))
+
+#######################################################################
+
+@login_required
+def add_link(request):
+   if request.method == 'POST':
+      add_form = AddLinkForm(request.POST)
+      if add_form.is_valid():
+         new_link = add_form.save(commit=False)
+         new_link.user = request.user
+         new_link.is_public = False
+         new_link.save()
+         email_admins('New link for approval', """Hello,
+
+A user has added a new link for your approval.
+""")
+         return HttpResponseRedirect(reverse('weblinks.views.add_thanks'))
+   else:
+      add_form = AddLinkForm()
+
+   return render_to_response('weblinks/add_link.html', {
+      'search_form': SearchForm(),
+      'add_form': add_form,
+      },
+      context_instance = RequestContext(request))
+
+#######################################################################
+
+@login_required
+def add_thanks(request):
+   return render_to_response('weblinks/add_link.html', {
+      'search_form': SearchForm(),
+      },
+      context_instance = RequestContext(request))
+
+#######################################################################
+
+# Maps URL component to database field name for the links table:
+
+LINK_FIELD_MAP = {
+   'title': 'title', 
+   'date': '-date_added',
+   'hits': '-hits'
+}
+
+def view_links(request, category, sort='title', page='1'):
+   try:
+      cat = Category.objects.get(pk=category)
+   except Category.DoesNotExist:
+      raise Http404
+
+   if sort in LINK_FIELD_MAP:
+      order_by = LINK_FIELD_MAP[sort]
+   else:
+      sort = 'title'
+      order_by = LINK_FIELD_MAP['title']
+
+   links = Link.public_objects.filter(category = category).order_by(order_by)
+   paginator = create_paginator(links)
+   try:
+      the_page = paginator.page(int(page))
+   except InvalidPage:
+      raise Http404
+
+   return render_to_response('weblinks/view_links.html', {
+      's' : sort,
+      'category' : cat,
+      'page' : the_page, 
+      'search_form': SearchForm(),
+      }, 
+      context_instance = RequestContext(request))
+
+#######################################################################
+
+def _visit_link(request, link):
+   link.hits += 1
+   link.save()
+   return HttpResponseRedirect(link.url)
+
+#######################################################################
+
+def visit(request, link_id):
+   link = get_object_or_404(Link, pk = link_id)
+   return _visit_link(request, link)
+
+#######################################################################
+
+def random_link(request):
+   ids = Link.public_objects.values_list('id', flat=True)
+   if not ids:
+       raise Http404
+   id = random.choice(ids)
+   random_link = Link.public_objects.get(pk=id)
+   return _visit_link(request, random_link)
+
+#######################################################################
+
+@login_required
+def report_link(request, link_id):
+   link = get_object_or_404(Link, pk = link_id)
+   if request.method == "POST":
+      FlaggedLink.objects.create(link, request.user)
+      email_admins('A Link Has Been Flagged as Broken', """Hello,
+
+A user has flagged a link as broken.
+""")
+      return HttpResponseRedirect(reverse('weblinks.views.report_thanks', args = (link_id, )))
+
+   return render_to_response('weblinks/report_link.html', {
+      'link': link, 
+      'search_form': SearchForm(),
+      'report_thanks': False,
+      },
+      context_instance = RequestContext(request))
+
+
+#######################################################################
+
+@login_required
+def report_thanks(request, link_id):
+   link = get_object_or_404(Link, pk = link_id)
+   return render_to_response('weblinks/report_link.html', {
+      'link': link, 
+      'search_form': SearchForm(),
+      'report_thanks': True,
+      },
+      context_instance = RequestContext(request))
+
+#######################################################################
+
+def search_links(request, page=1):
+   if request.method == 'POST':
+      form = SearchForm(request.POST)
+      if form.is_valid():
+         query_text = form.query()
+         page = 1
+      else:
+         return HttpResponseRedirect(reverse('weblinks.views.link_index'))
+   else:
+      if 'query' in request.GET:
+         query_text = request.GET['query']
+      else:
+         return HttpResponseRedirect(reverse('weblinks.views.link_index'))
+
+   links = Link.public_objects.filter(
+         Q(title__icontains = query_text) |
+         Q(description__icontains = query_text)).order_by('title')
+   paginator = create_paginator(links)
+   try:
+      the_page = paginator.page(int(page))
+   except EmptyPage:
+      links = Link.public_objects.none()
+   except InvalidPage:
+      raise Http404
+
+   return render_to_response('weblinks/search_results.html', {
+      'query': query_text,
+      'page': the_page, 
+      'search_form': SearchForm(),
+      }, 
+      context_instance = RequestContext(request))