From 6b7749b6be811f8a1ef705139a21bbab98a5b796 Mon Sep 17 00:00:00 2001
From: Raymond Yee <raymond.yee@gmail.com>
Date: Fri, 25 Jul 2014 13:49:12 -0700
Subject: [PATCH] in active_campaigns feed, exclude books w/o ebooks

---
 api/opds.py          |   3 +-
 notebooks/opds.ipynb | 103 +++++++++++++++++++++++++------------------
 2 files changed, 61 insertions(+), 45 deletions(-)

diff --git a/api/opds.py b/api/opds.py
index 32b73796..3a4a8cea 100644
--- a/api/opds.py
+++ b/api/opds.py
@@ -131,7 +131,8 @@ class active_campaigns(Facet):
     """
     title = "Unglue.it Catalog:  Books under Active Campaign"
     feed_path = "active_campaigns"
-    works = models.Work.objects.filter(campaigns__status='ACTIVE').order_by('-created')
+    works = models.Work.objects.filter(campaigns__status='ACTIVE',
+                               editions__ebooks__isnull=False).distinct().order_by('-created')
     description= "With your help we're raising money to make these books free to the world."
 
 def opds_feed_for_works(works, feed_path, title="Unglue.it Catalog"):
diff --git a/notebooks/opds.ipynb b/notebooks/opds.ipynb
index fa52d4f7..94e82a63 100644
--- a/notebooks/opds.ipynb
+++ b/notebooks/opds.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:9c22749755ac63be304b4d1975df24fa2f5ae6afb32dd56374a060df17645c96"
+  "signature": "sha256:79e7f4505df4df7b3f16885d4d975832795dea0dd4b4d0790179dc25b15f8eee"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -637,17 +637,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 18,
-       "text": [
-        "['http://127.0.0.1:8000/download_ebook/1317/']"
-       ]
-      }
-     ],
-     "prompt_number": 18
+     "outputs": []
     },
     {
      "cell_type": "heading",
@@ -675,17 +665,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 30,
-       "text": [
-        "'https://unglue.it/download_ebook/906/?feed=opds'"
-       ]
-      }
-     ],
-     "prompt_number": 30
+     "outputs": []
     },
     {
      "cell_type": "heading",
@@ -704,17 +684,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 32,
-       "text": [
-        "[<Campaign: Campaign for Lagos__2060>, <Campaign: Campaign for Dave on Earth>, <Campaign: Campaign for Green Comet>, <Campaign: Campaign for 23rd Century Romance>, <Campaign: Campaign for Moebius Noodles>, <Campaign: Campaign for The Digital Public Domain: Foundations for an Open Culture>, <Campaign: Campaign for The Classic Short Story, 1870-1925: Theory of a Genre>, <Campaign: Campaign for Acts of the Apostles>, <Campaign: Campaign for The Pains>, <Campaign: Campaign for Cheap Complex Devices>, <Campaign: Campaign for Biodigital>, <Campaign: Campaign for Contact With Shadow>]"
-       ]
-      }
-     ],
-     "prompt_number": 32
+     "outputs": []
     },
     {
      "cell_type": "code",
@@ -724,17 +694,62 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 34,
-       "text": [
-        "[<Work: 23rd Century Romance>, <Work: Acts of the Apostles>, <Work: Biodigital>, <Work: Cheap Complex Devices>, <Work: Contact With Shadow>, <Work: Dave on Earth>, <Work: Green Comet>, <Work: Lagos__2060>, <Work: Moebius Noodles>, <Work: The Classic Short Story, 1870-1925: Theory of a Genre>, <Work: The Digital Public Domain: Foundations for an Open Culture>, <Work: The Pains>]"
-       ]
-      }
+     "outputs": []
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "must exclude campaigns without ebooks"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from regluit.core import models\n",
+      "from django.db.models import Q\n",
+      "\n",
+      "len(models.Work.objects.filter(campaigns__status='ACTIVE').order_by('-created'))"
      ],
-     "prompt_number": 34
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "works = models.Work.objects.filter(campaigns__status='ACTIVE',\n",
+      "                               editions__ebooks__isnull=False).distinct().order_by('-created')\n",
+      "[w.ebooks() for w in works]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "works = Work.objects.all()\n",
+      "work = works[0]\n",
+      "work.ebooks()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "models.Work.objects.filter(work)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
     },
     {
      "cell_type": "heading",