Move slug creation helper to main/utils

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

2 files changed, 17 insertions, 16 deletions

diff --git a/main/utils.py b/main/utils.py
index 17ca386..cdd4ff7 100644
--- a/main/utils.py
+++ b/main/utils.py
@@ -9,6 +9,7 @@ import hashlib
 from django.core.cache import cache
 from django.db import connections, router
 from django.utils.timezone import now
+from django.template.defaultfilters import slugify
 
 
 CACHE_TIMEOUT = 1800
@@ -118,6 +119,20 @@ def set_created_field(sender, **kwargs):
         obj.last_modified = time
 
 
+def find_unique_slug(model, title):
+    '''Attempt to find a unique slug for this model with given title.'''
+    existing = set(model.objects.values_list(
+        'slug', flat=True).order_by().distinct())
+
+    suffixed = slug = slugify(title)
+    suffix = 0
+    while suffixed in existing:
+        suffix += 1
+        suffixed = "%s-%d" % (slug, suffix)
+
+    return suffixed
+
+
 def database_vendor(model, mode='read'):
     if mode == 'read':
         database = router.db_for_read(model)
diff --git a/news/views.py b/news/views.py
index 0e22ac3..62d30fd 100644
--- a/news/views.py
+++ b/news/views.py
@@ -3,26 +3,12 @@ import markdown
 from django import forms
 from django.http import HttpResponse
 from django.shortcuts import get_object_or_404, redirect
-from django.template.defaultfilters import slugify
 from django.views.decorators.http import require_POST
 from django.views.generic import (DetailView, ListView,
         CreateView, UpdateView, DeleteView)
 
 from .models import News
-
-
-def find_unique_slug(newsitem):
-    '''Attempt to find a unique slug for this news item.'''
-    existing = list(News.objects.values_list(
-        'slug', flat=True).order_by().distinct())
-
-    suffixed = slug = slugify(newsitem.title)
-    suffix = 0
-    while suffixed in existing:
-        suffix += 1
-        suffixed = "%s-%d" % (slug, suffix)
-
-    return suffixed
+from main.utils import find_unique_slug
 
 
 class NewsForm(forms.ModelForm):
@@ -51,7 +37,7 @@ class NewsCreateView(CreateView):
         # special logic, we auto-fill the author and slug fields
         newsitem = form.save(commit=False)
         newsitem.author = self.request.user
-        newsitem.slug = find_unique_slug(newsitem)
+        newsitem.slug = find_unique_slug(News, newsitem.title)
         newsitem.save()
         return super(NewsCreateView, self).form_valid(form)