diff -r 73f19fa4f997 -r 8f77cf71ab02 src/hdalab/views/pages.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hdalab/views/pages.py	Tue Jun 17 10:25:33 2014 +0200
@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+
+from django.shortcuts import render_to_response, redirect
+from django.template import RequestContext
+from hdabo.models import Datasheet, TaggedSheet
+import re
+import django.utils.simplejson as json
+
+def datasheet(request, hda_id=None):
+    MAX_TAG = 15
+    MAX_RELATED = 50
+    
+    datasheet = Datasheet.objects.select_related("organisation").get(hda_id=hda_id)
+    
+    domain = re.findall(r"^https?://(www\.)?([^/]+)",datasheet.url)
+    ordered_tags = TaggedSheet.objects.filter(datasheet=datasheet,order__lte=MAX_TAG).select_related("tag").order_by('order')
+    tags = [t.tag.id for t in ordered_tags]
+    tagorders = dict([(t.tag.id,t.order) for t in ordered_tags])
+    tsqs = TaggedSheet.objects.exclude(datasheet=datasheet).filter(order__lte=MAX_TAG,tag_id__in=tags)
+    dsscores = {}
+    addtoscore = 2*MAX_TAG
+    
+    for ts in tsqs:
+        a_order = tagorders[ts.tag_id]
+        b_order = ts.order
+        score = addtoscore - a_order - b_order
+        dsscore = dsscores.get(ts.datasheet_id,0)
+        dsscores[ts.datasheet_id] = dsscore + score
+    relatedqs = Datasheet.objects.filter(id__in=dsscores.keys()).select_related("organisation")
+    relatedds = [{
+        'id': ds.id,
+        'hda_id': ds.hda_id,
+        'title': ds.title,
+        'description': ds.description,
+        'organisation_name': ds.organisation.name,
+        'organisation_url': ds.organisation.website,
+        'score': dsscores.get(ds.id,0),
+    } for ds in relatedqs]
+    relatedds = sorted(relatedds, key=lambda ds: -ds['score'])[:MAX_RELATED]
+    
+    for ds in relatedds:
+        otqs = TaggedSheet.objects.filter(datasheet_id=ds['id'],order__lte=MAX_TAG).select_related("tag").order_by('order')
+        ds['ordered_tags'] = [{
+            'id': t.tag.id,
+            'label': t.tag.label,
+            'order': t.order,
+            'common' : (t.tag.id in tags)
+        } for t in otqs]
+    
+    return render_to_response(
+        "notice.html",
+        {
+            'datasheet':datasheet,
+            'domain': domain[0][1] if domain else "",
+            'ordered_tags': ordered_tags,
+            'related': relatedds,
+        },
+        context_instance=RequestContext(request)
+    )