From 4e08ad3d1bbb0c57862856f293cc5f51ab613400 Mon Sep 17 00:00:00 2001
From: Andrew Williams <andy@tensixtyone.com>
Date: Sat, 24 Dec 2011 01:12:08 +0000
Subject: [PATCH] Moved EVE API views into their own module, added some CSV
 mixins

---
 app/eve_api/views/__init__.py           |  1 +
 app/eve_api/{views.py => views/base.py} |  0
 app/eve_api/views/mixins.py             | 62 +++++++++++++++++++++++++
 3 files changed, 63 insertions(+)
 create mode 100644 app/eve_api/views/__init__.py
 rename app/eve_api/{views.py => views/base.py} (100%)
 create mode 100644 app/eve_api/views/mixins.py

diff --git a/app/eve_api/views/__init__.py b/app/eve_api/views/__init__.py
new file mode 100644
index 0000000..0cb7498
--- /dev/null
+++ b/app/eve_api/views/__init__.py
@@ -0,0 +1 @@
+from eve_api.views.base import *
diff --git a/app/eve_api/views.py b/app/eve_api/views/base.py
similarity index 100%
rename from app/eve_api/views.py
rename to app/eve_api/views/base.py
diff --git a/app/eve_api/views/mixins.py b/app/eve_api/views/mixins.py
new file mode 100644
index 0000000..8d649e1
--- /dev/null
+++ b/app/eve_api/views/mixins.py
@@ -0,0 +1,62 @@
+import csv
+import codecs
+
+from django.core.exceptions import ImproperlyConfigured
+from django.http import HttpResponse
+from django.views.generic.list import MultipleObjectMixin
+
+
+class CSVResponseMixin(object):
+
+    def get_csv_headers(self):
+        self.data = self.get_csv_data()
+        if not len(self.data):
+            raise ImproperlyConfigured("No data returned, so we're unable to create the header row")
+        return [x for x in self.data[0].keys()]
+
+    def get_csv_data(self):
+        return getattr(self, 'csv_data', [])
+
+    def get_dialect(self):
+        return getattr(self, 'dialect', csv.excel)
+
+    def get_charset(self):
+        charset = getattr(self, 'charset', 'windows-1252')
+        try:
+            codecs.lookup(charset)
+        except LookupError:
+            raise ImproperlyConfigured("Invalid output characterset (%s) provided" % charset)
+        return charset
+
+    def get_filename(self):
+        return getattr(self, 'csv_filename', 'output.csv')
+
+    def get(self, request, *args, **kwargs):
+        # Initial setup
+        charset = self.get_charset()
+        response = HttpResponse(mimetype='text/csv; charset=%s' % charset)
+        response['Content-Disposition'] = 'attachment; filename=%s' % self.get_filename()
+
+        w = csv.writer(response, self.get_dialect())
+
+        # Headings
+        headings = [unicode(c).encode(charset, 'replace') for c in self.get_csv_headers()]
+        w.writerow(headings)
+
+        # Rows
+        for row in self.data:
+            row = [unicode(c).encode(charset, 'replace') for c in row.values()]
+            w.writerow(row)
+
+        # Done
+        return response
+
+
+class MultipleObjectCSVResponseMixin(CSVResponseMixin, MultipleObjectMixin):
+
+    def get_filename(self):
+        return '%s.csv' % self.model.__name__
+
+    def get_csv_data(self):
+        return self.queryset.all().values()
+