abstracted the next prev links into utils so now they work for every

model that implements a get_%S_admin_link method and loads the JS

2 files changed, 15 insertions, 0 deletions

diff --git a/app/books/admin.py b/app/books/admin.py
index 1896067..29a885f 100644
--- a/app/books/admin.py
+++ b/app/books/admin.py
@@ -7,6 +7,8 @@ class BookAdmin(admin.ModelAdmin):
     search_fields = ['title', 'body_markdown']
     list_filter = ('rating', 'read_date')
 
+    class Media:
+        js = ('next-prev-links.js',)
 
 class BookHighlightAdmin(admin.ModelAdmin):
     list_display = ('book', 'page', 'date_added')
diff --git a/app/books/models.py b/app/books/models.py
index f888480..ebd3a2a 100644
--- a/app/books/models.py
+++ b/app/books/models.py
@@ -56,6 +56,19 @@ class Book(models.Model):
     def ratings_range(cls):
         return range(1, 6)
 
+    @property
+    def get_previous_admin_url(self):
+        n = self.get_previous_by_pub_date()
+        return reverse('admin:%s_%s_change' %(self._meta.app_label,  self._meta.model_name),  args=[n.id] )
+
+    @property
+    def get_next_admin_url(self):
+        model = apps.get_model(app_label=self._meta.app_label, model_name=self._meta.model_name)
+        try:
+            return reverse('admin:%s_%s_change' %(self._meta.app_label,  self._meta.model_name),  args=[self.get_next_by_pub_date().pk] )
+        except model.DoesNotExist:
+            return ''
+
     def admin_thumbnail(self):
         return force_text('<a href=""><img src="%s" width="100" style="width:100px"></a>' % (self.get_image_url()))
     admin_thumbnail.allow_tags = True