Simplify tag urls

mapsapp/api.py

@@ -206,18 +206,11 @@ def maps2json(maps):
     return objects
 
 
-def tags(request, url_fragment):
-    if url_fragment == '':
+def tags(request, tag):
+    if tag == '':
         return JsonResponse({"maps": []})
 
-    items = url_fragment.split('/')
-    taglist = []
-    for item in items:
-        if item.isnumeric():
-            taglist.append(get_object_or_404(Tag, pk=int(item)))
-    resultset = Rms.objects.filter(newer_version=None, archived=False)
-    for tag in taglist:
-        resultset = resultset.filter(tags=tag)
+    resultset = Rms.objects.filter(newer_version=None, archived=False).filter(tags=tag)
     objects = maps2json(resultset)
 
     return JsonResponse({"maps": objects})

mapsapp/api_urls.py

@@ -21,7 +21,7 @@
     path('collection/<uuid:collection_id>', api.collection, name='collection'),
     path('modifycollection/', api.modifycollection, name='modifycollection'),
     path('version/<version_name>', api.versiontag, name='version'),
-    re_path(r'^tags/(?P<url_fragment>(\d+/)*)$', api.tags, name='tags'),
+    path('tags/<tag>', api.tags, name='tags'),
     path('vote/<uuid:rms_id>/add', api.add_vote, name='add_vote'),
     path('vote/<uuid:rms_id>/remove', api.remove_vote, name='remove_vote'),
 ]

mapsapp/templates/mapsapp/map.html

@@ -209,7 +209,7 @@ <h5 class="card-subtitle mb-2 text-muted">by {{ rms.authors }}</h5>
                     <div class="col-12 align-self-end">
                         <div class="tags">Tags:
                             {% for tag in rms.tags.all %}
-                                <a href="{% url 'tags' url_fragment=tag.id|stringformat:"s/" %}"
+                                <a href="{% url 'tags' tag=tag.id %}"
                                    class="badge badge-secondary">{{ tag.name }}</a>
                             {% endfor %}
                         </div>

mapsapp/templates/mapsapp/tags.html

@@ -3,19 +3,14 @@
 {% block pagetitle %}Tags – {% endblock %}
 
 {% block subtitle %}
-    <h4 class="text-center">Maps tagged with ›{% for tag in tagset %}{{ tag }}{% if not forloop.last %},
-    {% endif %}{% endfor %}‹</h4>
+    <h4 class="text-center">Maps tagged with ›{{ tag }}‹</h4>
 {% endblock %}
 
 {% block content %}
     <div class="row alltags">
         <div class="col-md-8 offset-md-2">
-            {% for tag in alltags %}
-                {% if tag in tagset %}
-                    <a href="./remove/{{ tag.id }}/" class="badge badge-primary">{{ tag }}</a>
-                {% else %}
-                    <a href="./{{ tag.id }}/" class="badge badge-secondary">{{ tag }}</a>
-                {% endif %}
+            {% for single_tag in alltags %}
+                <a href="./{{ single_tag.id }}" class="badge badge-secondary">{{ single_tag }}</a>
             {% endfor %}
         </div>
     </div>

mapsapp/urls.py

@@ -44,8 +44,7 @@ def to_url(self, value):
     path('newcollection', views.editcollection, name='newcollection'),
     path('newcollection/<uuid:rms_id>', views.editcollection, name='newcollection'),
     path('version/<version_name>', views.version, name='version'),
-    re_path(r'^tags/(?P<url_fragment>(\d+/)*)$', views.tags, name='tags'),
-    re_path(r'^tags/(?P<url_fragment>(\d+/)+)remove/(?P<id_to_remove>\d+)/$', views.tags_remove, name='tags_remove'),
+    path('tags/<tag>', views.tags, name='tags'),
     path('email_verification_sent', views.email_verification_sent, name='email_verification_sent'),
     path('verify/<uidb64>/<token>', views.verify_email, name='verify_email'),
     path('password_reset', PasswordResetViewWithCustomDomain.as_view(), name='password_reset'),

mapsapp/views.py

@@ -478,16 +478,12 @@ def email_verification_sent(request):
     return render(request, 'mapsapp/email_verification_sent.html', context=context)
 
 
-def tags(request, url_fragment):
-    items = url_fragment.split('/')
-    tagset = set()
-    for item in items:
-        if item.isnumeric():
-            tagset.add(get_object_or_404(Tag, pk=int(item)))
+def tags(request, tag):
+    tag_object = Tag.objects.filter(id=tag).first()
     context = {
-        "tagset": tagset,
+        "tag": tag_object.name if tag_object else '?',
         "alltags": Tag.objects.all(),
-        API_URL: reverse('api:tags', kwargs={'url_fragment': url_fragment})
+        API_URL: reverse('api:tags', kwargs={'tag': tag})
     }
     return render(request, 'mapsapp/tags.html', context)
 
@@ -501,19 +497,6 @@ def version(request, version_name):
     return render(request, 'mapsapp/version.html', context)
 
 
-def tags_remove(request, url_fragment, id_to_remove):
-    items = url_fragment.split('/')
-    tag_id_set = set()
-    for item in items:
-        if item != "":
-            tag_id_set.add(item)
-    tag_id_set.remove(id_to_remove)
-    new_url_fragment = '/'.join(tag_id_set)
-    if new_url_fragment != '':
-        new_url_fragment += '/'
-    return redirect('tags', url_fragment=new_url_fragment)
-
-
 def info(request):
     context = {'contact': SiteSettings.load().contact}
     return render(request, 'mapsapp/info.html', context)