Show staging version on todolist view page

If one exists, it is easy enough to show it here so in-progress
todolists can easily be cross-checked with the current state of the
repository.

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

1 files changed, 19 insertions, 0 deletions

diff --git a/todolists/utils.py b/todolists/utils.py
index e86d905..51a75a3 100644
--- a/todolists/utils.py
+++ b/todolists/utils.py
@@ -2,6 +2,7 @@ from django.db import connections, router
 from django.db.models import Count
 
 from .models import Todolist, TodolistPackage
+from packages.models import Package
 
 
 def todo_counts():
@@ -36,4 +37,22 @@ def get_annotated_todolists(incomplete_only=False):
 
     return lists
 
+
+def attach_staging(packages, list_id):
+    '''Look for any staging version of the packages provided and attach them
+    to the 'staging' attribute on each package if found.'''
+    pkgnames = TodolistPackage.objects.filter(
+            todolist_id=list_id).values('pkgname')
+    staging_pkgs = Package.objects.normal().filter(repo__staging=True,
+            pkgname__in=pkgnames)
+    # now build a lookup dict to attach to the correct package
+    lookup = {(p.pkgname, p.arch): p for p in staging_pkgs}
+
+    annotated = []
+    for package in packages:
+        in_staging = lookup.get((package.pkgname, package.arch), None)
+        package.staging = in_staging
+
+    return annotated
+
 # vim: set ts=4 sw=4 et: