optimize provider views

doab_check/templates/provider.html

@@ -22,7 +22,7 @@ Link Checking for
 {% for code in codes %}
 <tr {% if code.recent_check__return_code != 200 %} style="color:red"{% endif %}>
 <td> {{ code.recent_check__return_code }} </td>
-<td> <a href="#code{{ code.recent_check__return_code }}">{{ code.count }}</a>
+<td> <a href="#code{{ code.recent_check__return_code }}">{{ code.recent_check__return_code__count }}</a>
 <td><a href="{% url 'fixing' %}#{{ code.recent_check__return_code }}">how to fix</a></td>
 </tr>
 {% empty %}
@@ -36,7 +36,7 @@ Link Checking for
 {% with code=codeobj.recent_check__return_code %}
 <h3{% if code != 200 %} style="color:red"{% endif %} id="code{{ code }}"> {{ code }}</h3>
 {% for link in codeobj.links %}
-{% with title=link.items.all.0.title %}
+{% with title=link.title %}
     {% ifchanged title %}<div class='itemtitle'>{{ title }}</div>{% endifchanged %}
     
     <div class='itemlink'><a href="{{ link.url }}">{{ link.url }}</a></div>  

doab_check/templates/providers.html

@@ -11,10 +11,10 @@
 <h2>
 DOAB Link Checking by Server Hostname
 </h2>
-
+<p>(number of links checked in parentheses)
 <ul>
 {% for provider in provider_list %}
-<li><a href="{%  url 'provider' provider.provider %}">{{provider.provider}}</a> ({{provider.link_count}})</li>
+<li><a href="{%  url 'provider' provider.provider %}">{{provider.provider}}</a> ({{provider.provider__count}})</li>
 {% endfor %}
 </ul>
 </div>

doab_check/views.py

@@ -1,7 +1,7 @@
 """doab_check views
 """
 
-from django.db.models import Count, OuterRef, Subquery
+from django.db.models import Count, F
 from django.http import HttpResponseRedirect
 from django.shortcuts import get_object_or_404, render
 from django.urls import reverse
@@ -46,9 +46,8 @@ class ProvidersView(generic.TemplateView):
     template_name = 'providers.html'
 
     def get_context_data(self, **kwargs):
-        providers = Link.objects.order_by('provider').values('provider').distinct()
-        for provider in providers:
-            provider['link_count'] = Link.objects.filter(provider=provider['provider']).count()
+        providers = Link.objects.order_by('provider').filter(live=True, recent_check__isnull=False,
+            ).values('provider').distinct().annotate(Count('provider'))
         return {'provider_list': providers}
 
 
@@ -61,12 +60,11 @@ class ProviderView(generic.TemplateView):
         provider_links = Link.objects.filter(provider=prov, live=True, recent_check__isnull=False)
         provider['link_count'] = provider_links.count()
         codes = provider_links.order_by('-recent_check__return_code').values(
-            'recent_check__return_code').distinct()
+            'recent_check__return_code').distinct().annotate(Count('recent_check__return_code'))
         for code in codes:
             code['links'] = provider_links.filter(live=True,
                 recent_check__return_code=code['recent_check__return_code'],
-            ).order_by('items__title')
-            code['count'] = code['links'].count()
+            ).order_by('items__title').annotate(title=F('items__title'))
             code['links'] = code['links'][:1000]
         
         return {'provider': provider,