From 408288719e7515ac01c6eb81a5a2d9a1c63a62bc Mon Sep 17 00:00:00 2001
From: Dan McGee <dan@archlinux.org>
Date: Wed, 9 Jun 2010 16:16:45 -0500
Subject: Enhance base package listing in package details

Add two methods to the package class, base_package() and split_packages(),
that allow us to grab other related packages to one we are interested in.
This allows us to list the Base Package on the package details page as a
link.

With the split_packages() method, we can also now list and link all
sub-packages on the package details page; e.g. for 'kernel26' we can now
link through to 'kernel26-firmware' and 'kernel26-headers'.

Signed-off-by: Dan McGee <dan@archlinux.org>
---
 main/models.py | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'main')

diff --git a/main/models.py b/main/models.py
index e106313c..7eeec854 100644
--- a/main/models.py
+++ b/main/models.py
@@ -264,6 +264,36 @@ def get_depends(self):
         self.deps_cache = deps
         return deps
 
+    def base_package(self):
+        """
+        Locate the base package for this package. It may be this very package,
+        or if it was built in a way that the base package isn't real, will
+        return None.
+        """
+        try:
+            # start by looking for something in this repo
+            return Package.objects.get(arch=self.arch,
+                    repo=self.repo, pkgname=self.pkgbase)
+        except Package.DoesNotExist:
+            # this package might be split across repos? just find one
+            # that matches the correct [testing] repo flag
+            pkglist = Package.objects.filter(arch=self.arch,
+                    repo__testing=self.repo.testing, pkgname=self.pkgbase)
+            if len(pkglist) > 0:
+                return pkglist[0]
+            return None
+
+    def split_packages(self):
+        """
+        Return all packages that were built with this one (e.g. share a pkgbase
+        value). The package this method is called on will never be in the list,
+        and we will never return a package that does not have the same
+        repo.testing flag. For any non-split packages, the return value will be
+        an empty list.
+        """
+        return Package.objects.filter(arch=self.arch,
+                repo__testing=self.repo.testing, pkgbase=self.pkgbase).exclude(id=self.id)
+
     def get_svn_link(self, svnpath):
         linkbase = "http://repos.archlinux.org/wsvn/%s/%s/%s/"
         repo = self.repo.name.lower()
-- 
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