X-Git-Url: https://git.mdrn.pl/django-pagination.git/blobdiff_plain/8f76903ab93a01d3b636d8977025c14cfa6f6131..1df6507872d73ee387eb375428eafbfc253dfcd8:/pagination/templatetags/pagination_tags.py

diff --git a/pagination/templatetags/pagination_tags.py b/pagination/templatetags/pagination_tags.py
index 01a956e..7505b74 100644
--- a/pagination/templatetags/pagination_tags.py
+++ b/pagination/templatetags/pagination_tags.py
@@ -2,8 +2,9 @@ try:
     set
 except NameError:
     from sets import Set as set
+
 from django import template
-from django.db.models.query import QuerySet
+from django.http import Http404
 from django.core.paginator import Paginator, InvalidPage
 from django.conf import settings
 
@@ -12,24 +13,43 @@ register = template.Library()
 DEFAULT_PAGINATION = getattr(settings, 'PAGINATION_DEFAULT_PAGINATION', 20)
 DEFAULT_WINDOW = getattr(settings, 'PAGINATION_DEFAULT_WINDOW', 4)
 DEFAULT_ORPHANS = getattr(settings, 'PAGINATION_DEFAULT_ORPHANS', 0)
+INVALID_PAGE_RAISES_404 = getattr(settings, 'PAGINATION_INVALID_PAGE_RAISES_404',
+    False)
 
 def do_autopaginate(parser, token):
     """
     Splits the arguments to the autopaginate tag and formats them correctly.
     """
     split = token.split_contents()
+    as_index = None
+    context_var = None
+    for i, bit in enumerate(split):
+        if bit == 'as':
+            as_index = i
+            break
+    if as_index is not None:
+        try:
+            context_var = split[as_index + 1]
+        except IndexError:
+            raise template.TemplateSyntaxError("Context variable assignment " +\
+                "must take the form of {%% %r object.example_set.all ... as " +\
+                "context_var_name %%}" % split[0])
+        del split[as_index:as_index + 2]
     if len(split) == 2:
         return AutoPaginateNode(split[1])
     elif len(split) == 3:
-        return AutoPaginateNode(split[1], paginate_by=split[2])
+        return AutoPaginateNode(split[1], paginate_by=split[2], 
+            context_var=context_var)
     elif len(split) == 4:
         try:
             orphans = int(split[3])
         except ValueError:
-            raise template.TemplateSyntaxError(u'Got %s, but expected integer.' % split[3])           
-        return AutoPaginateNode(split[1], paginate_by=split[2], orphans=orphans)
+            raise template.TemplateSyntaxError(u'Got %s, but expected integer.' % split[3])
+        return AutoPaginateNode(split[1], paginate_by=split[2], orphans=orphans,
+            context_var=context_var)
     else:
-        raise template.TemplateSyntaxError('%r tag takes one required argument and one optional argument' % split[0])
+        raise template.TemplateSyntaxError('%r tag takes one required ' + \
+            'argument and one optional argument' % split[0])
 
 class AutoPaginateNode(template.Node):
     """
@@ -48,13 +68,15 @@ class AutoPaginateNode(template.Node):
         tag.  If you choose not to use *{% paginate %}*, make sure to display the
         list of available pages, or else the application may seem to be buggy.
     """
-    def __init__(self, queryset_var, paginate_by=DEFAULT_PAGINATION, orphans=DEFAULT_ORPHANS):
+    def __init__(self, queryset_var, paginate_by=DEFAULT_PAGINATION,
+        orphans=DEFAULT_ORPHANS, context_var=None):
         self.queryset_var = template.Variable(queryset_var)
         if isinstance(paginate_by, int):
             self.paginate_by = paginate_by
         else:
             self.paginate_by = template.Variable(paginate_by)
         self.orphans = orphans
+        self.context_var = context_var
 
     def render(self, context):
         key = self.queryset_var.var
@@ -67,10 +89,16 @@ class AutoPaginateNode(template.Node):
         try:
             page_obj = paginator.page(context['request'].page)
         except InvalidPage:
+            if INVALID_PAGE_RAISES_404:
+                raise Http404('Invalid page requested.  If DEBUG were set to ' +
+                    'False, an HTTP 404 page would have been shown instead.')
             context[key] = []
             context['invalid_page'] = True
             return u''
-        context[key] = page_obj.object_list
+        if self.context_var is not None:
+            context[self.context_var] = page_obj.object_list
+        else:
+            context[key] = page_obj.object_list
         context['paginator'] = paginator
         context['page_obj'] = page_obj
         return u''
@@ -123,7 +151,7 @@ def paginate(context, window=DEFAULT_WINDOW):
         if len(first.intersection(current)) == 0:
             first_list = list(first)
             first_list.sort()
-            second_list = list(second)
+            second_list = list(current)
             second_list.sort()
             pages.extend(first_list)
             diff = second_list[0] - first_list[-1]