Display sub-areas in the areas list

[climbing.kerkeslager.com] / src / climbing / models.py

diff --git a/src/climbing/models.py b/src/climbing/models.py
index 62507ad..8be6ee9 100644 (file)
--- a/src/climbing/models.py
+++ b/src/climbing/models.py
@@ -8,6 +8,49 @@ class Area(models.Model):
     def __str__(self):
         return self.name
 
+    @property
+    def sub_areas(self):
+        crags = iter(self.crags.order_by('name'))
+        clusters = iter(self.clusters.order_by('name'))
+
+        try:
+            crag = next(crags)
+        except StopIteration:
+            crag = None
+
+        try:
+            cluster = next(clusters)
+        except StopIteration:
+            cluster = None
+
+        while crag and cluster:
+            if crag.name < cluster.name:
+                yield crag
+                try:
+                    crag = next(crags)
+                except:
+                    crag = None
+            else:
+                yield cluster
+                try:
+                    cluster = next(clusters)
+                except:
+                    cluster = None
+
+        while crag:
+            yield crag
+            try:
+                crag = next(crags)
+            except:
+                crag = None
+
+        while cluster:
+            yield cluster
+            try:
+                cluster = next(clusters)
+            except:
+                cluster = None
+
 class Crag(models.Model):
     area = models.ForeignKey(
         Area,