Add arch-specific group overview pages

This is easy enough to refactor and support with our current infrastructure
and group-fetching functions.

Signed-off-by: Dan McGee <dan@archlinux.org>

2 files changed, 17 insertions, 7 deletions

diff --git a/packages/utils.py b/packages/utils.py
index 93d0de79..aaec0ec4 100644
--- a/packages/utils.py
+++ b/packages/utils.py
@@ -8,7 +8,7 @@ from main.utils import cache_function
 from .models import PackageGroup
 
 @cache_function(300)
-def get_group_info():
+def get_group_info(include_arches=None):
     raw_groups = PackageGroup.objects.values_list(
             'name', 'pkg__arch__name').order_by('name').annotate(
              cnt=Count('pkg'), last_update=Max('pkg__last_update'))
@@ -38,10 +38,12 @@ def get_group_info():
                     new_g['arch'] = arch
                     arch_groups[grp['name']] = new_g
 
-    # now transform it back into a sorted list
+    # now transform it back into a sorted list, including only the specified
+    # architectures if we got a list
     groups = []
-    for val in group_mapping.itervalues():
-        groups.extend(val.itervalues())
+    for key, val in group_mapping.iteritems():
+        if not include_arches or key in include_arches:
+            groups.extend(val.itervalues())
     return sorted(groups, key=itemgetter('name', 'arch'))
 
 class Difference(object):
diff --git a/packages/views.py b/packages/views.py
index 4e683144..e00e6f94 100644
--- a/packages/views.py
+++ b/packages/views.py
@@ -88,9 +88,17 @@ def details(request, name='', repo='', arch=''):
         return redirect("/packages/?arch=%s&repo=%s&q=%s" % (
             arch.lower(), repo.title(), name))
 
-def groups(request):
-    grps = get_group_info()
-    return direct_to_template(request, 'packages/groups.html', {'groups': grps})
+def groups(request, arch=None):
+    arches = []
+    if arch:
+        get_object_or_404(Arch, name=arch, agnostic=False)
+        arches.append(arch)
+    grps = get_group_info(arches)
+    context = {
+        'groups': grps,
+        'arch': arch,
+    }
+    return direct_to_template(request, 'packages/groups.html', context)
 
 def group_details(request, arch, name):
     arch = get_object_or_404(Arch, name=arch)