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authorDan McGee <dan@archlinux.org>2012-07-31 19:01:45 -0500
committerDan McGee <dan@archlinux.org>2012-07-31 19:01:45 -0500
commit0b7939ae1a1e3ce55ee458d24fd5946542d9c14a (patch)
treea5b5a5c24c695aef52289ad015f566c523e815cc /packages/views/display.py
parent3f0c024754047d92e8ce4aa4ecf93a06865f8448 (diff)
Rework package details dispatch code
We had a variety of fallback paths that we took if a details page didn't exist for the combination of URL parts passed in. Before I go adding a few more possibilities, rework this so it is more flexible. It is now as simple as adding a method to the dispatch options list in order to have further fallback options. Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'packages/views/display.py')
-rw-r--r--packages/views/display.py82
1 files changed, 45 insertions, 37 deletions
diff --git a/packages/views/display.py b/packages/views/display.py
index 585e0e4e..1ea9ea48 100644
--- a/packages/views/display.py
+++ b/packages/views/display.py
@@ -14,10 +14,10 @@ from ..utils import get_group_info, PackageJSONEncoder
def split_package_details(request, name, repo, arch):
- arch = get_object_or_404(Arch, name=arch)
+ '''Check if we have a split package (e.g. pkgbase) value matching this
+ name. If so, we can show a listing page for the entire set of packages.'''
arches = [ arch ]
arches.extend(Arch.objects.filter(agnostic=True))
- repo = get_object_or_404(Repo, name__iexact=repo)
pkgs = Package.objects.normal().filter(pkgbase=name,
repo__testing=repo.testing, repo__staging=repo.staging,
arch__in=arches).order_by('pkgname')
@@ -39,15 +39,13 @@ CUTOFF = datetime.timedelta(days=60)
def recently_removed_package(request, name, repo, arch, cutoff=CUTOFF):
- '''We're just steps away from raising a 404, but check our packages update
- table first to see if this package has existed in this repo before. If so,
- we can show a 410 Gone page and point the requester in the right
- direction.'''
- arch = get_object_or_404(Arch, name=arch)
+ '''Check our packages update table to see if this package has existed in
+ this repo before. If so, we can show a 410 Gone page and point the
+ requester in the right direction.'''
arches = [ arch ]
arches.extend(Arch.objects.filter(agnostic=True))
match = Update.objects.select_related('arch', 'repo').filter(
- pkgname=name, repo__name__iexact=repo, arch__in=arches)
+ pkgname=name, repo=repo, arch__in=arches)
if cutoff is not None:
when = now() - cutoff
match = match.filter(created__gte=when)
@@ -59,43 +57,53 @@ def recently_removed_package(request, name, repo, arch, cutoff=CUTOFF):
return None
+def redirect_agnostic(request, name, repo, arch):
+ '''For arch='any' packages, we can issue a redirect to them if we have a
+ single non-ambiguous option by changing the arch to match any arch-agnostic
+ package.'''
+ if not arch.agnostic:
+ # limit to 2 results, we only need to know whether there is anything
+ # except only one matching result
+ pkgs = Package.objects.select_related(
+ 'arch', 'repo', 'packager').filter(pkgname=name,
+ repo=repo, arch__agnostic=True)[:2]
+ if len(pkgs) == 1:
+ return redirect(pkgs[0], permanent=True)
+ return None
+
+
+def redirect_to_search(request, name, repo, arch):
+ pkg_data = [
+ ('arch', arch.lower()),
+ ('repo', repo.lower()),
+ ('q', name),
+ ]
+ # only include non-blank values in the query we generate
+ pkg_data = [(x, y.encode('utf-8')) for x, y in pkg_data if y]
+ return redirect("/packages/?%s" % urlencode(pkg_data))
+
+
def details(request, name='', repo='', arch=''):
if all([name, repo, arch]):
+ arch_obj = get_object_or_404(Arch, name=arch)
+ repo_obj = get_object_or_404(Repo, name__iexact=repo)
try:
pkg = Package.objects.select_related(
'arch', 'repo', 'packager').get(pkgname=name,
- repo__name__iexact=repo, arch__name=arch)
+ repo=repo_obj, arch=arch_obj)
return render(request, 'packages/details.html', {'pkg': pkg})
except Package.DoesNotExist:
- arch_obj = get_object_or_404(Arch, name=arch)
- # for arch='any' packages, we can issue a redirect to them if we
- # have a single non-ambiguous option by changing the arch to match
- # any arch-agnostic package
- if not arch_obj.agnostic:
- pkgs = Package.objects.select_related(
- 'arch', 'repo', 'packager').filter(pkgname=name,
- repo__name__iexact=repo, arch__agnostic=True)
- if len(pkgs) == 1:
- return redirect(pkgs[0], permanent=True)
- # do we have a split package matching this criteria?
- ret = split_package_details(request, name, repo, arch)
- if ret is None:
- # maybe we have a recently-removed package?
- ret = recently_removed_package(request, name, repo, arch)
- if ret is not None:
- return ret
- else:
- # we've tried everything at this point, nothing to see
- raise Http404
+ # attempt a variety of fallback options before 404ing
+ options = (redirect_agnostic, split_package_details,
+ recently_removed_package)
+ for method in options:
+ ret = method(request, name, repo_obj, arch_obj)
+ if ret:
+ return ret
+ # we've tried everything at this point, nothing to see
+ raise Http404
else:
- pkg_data = [
- ('arch', arch.lower()),
- ('repo', repo.lower()),
- ('q', name),
- ]
- # only include non-blank values in the query we generate
- pkg_data = [(x, y.encode('utf-8')) for x, y in pkg_data if y]
- return redirect("/packages/?%s" % urlencode(pkg_data))
+ return redirect_to_search(request, name, repo, arch)
def groups(request, arch=None):