Re: making some generic views more generic
Sorry, here is an example of item_list
urlpatterns = patterns('',
(r'^products/$',
item_list,{
'template_object_name' : 'product',
'queryset' : Product.objects.all()
}),
(r'^products/(?P\d+)/$',
item_list,{
'template_object_name' : 'product',
'queryset' : Product.objects.all()
}),
(r'^products/(?P[\w-]+)/$',
views.item_list,{
'template_object_name' : 'product',
'queryset' : Product.objects.all()
}),
)
On Jan 6, 2:43 pm, cipher <cipherz...@gmail.com> wrote:
> I also would like to request another view.
>
> def item_list(request,queryset,extra_context={},
> item_template=None,template_name=None,
>
> template_object_name='object',template_content_name='items',
> page=None,paginate_by=None,
> mimetype=None,allow_empty=True,
> template_loader=loader,context_processors=None,
> **filters):
> queryset = queryset._clone()
> if filters:
> for k,v in filters.items():
> if k.startswith('_'):
> del filters[k]
> filters[k[1:]]=v
> queryset=queryset.filter(**filters)
>
> if paginate_by:
> paginator = Paginator(queryset, paginate_by,
> allow_empty_first_page=allow_empty)
> if not page:
> page = request.GET.get('page', 1)
> try:
> page_number = int(page)
> except ValueError:
> if page == 'last':
> page_number = paginator.num_pages
> else:
> # Page is not 'last', nor can it be converted
> to an int.
> raise Http404
> try:
> page_obj = paginator.page(page_number)
> except InvalidPage:
> raise Http404
>
> c = RequestContext(request, {
> '{0}_list'.format(template_object_name):
> page_obj.object_list,
> 'paginator': paginator,
> 'page': page_obj,
> 'results_per_page': paginator.per_page,
> 'pages': paginator.num_pages,
> 'hits': paginator.count,
> 'page_range': paginator.page_range,
> }, context_processors)
> queryset=page_obj.object_list
> else:
> c = RequestContext(request, {
> '%s_list' % template_object_name: queryset,
> 'paginator': None,
> 'page_obj': None,
> 'is_paginated': False,
> }, context_processors)
> if not allow_empty and len(queryset) == 0:
> raise Http404
> for key, value in extra_context.items():
> if callable(value):
> c[key] = value()
> else:
> c[key] = value
>
> modelMeta=queryset.model()._meta
> directory,name=modelMeta.app_label,modelMeta.object_name.lower()
>
> if item_template is None:
> item_template='{0}/{1}_list_item.html'.format(directory,name)
> if template_name is None:
> template_name='{0}/{1}_list.html'.format(directory,name)
> item_template = template_loader.get_template(item_template)
> responses=[]
> c.push()
> for item in queryset:
> c[template_object_name]=item
> item_result=item_template.render(c)
> responses.append(item_result)
> c.pop()
> template=template_loader.get_template(template_name)
> c[template_content_name]=mark_safe(''.join(responses))
> return HttpResponse(template.render(c), mimetype=mimetype)
>
> basically that will take keyword args and filter based on them like
> Gabes methods,
> but it also abstracts the item template in to another file.
>
> On Jan 6, 11:01 am, Gabe <gget...@gmail.com> wrote:
>
> > Hello,
>
> > I really like the generic view feature of Django. It's been a handy
> > way to save a lot of work. Lately though, I've been finding myself
> > often wanting to display a list of ob
Re: making some generic views more generic
I also would like to request another view.
def item_list(request,queryset,extra_context={},
item_template=None,template_name=None,
template_object_name='object',template_content_name='items',
page=None,paginate_by=None,
mimetype=None,allow_empty=True,
template_loader=loader,context_processors=None,
**filters):
queryset = queryset._clone()
if filters:
for k,v in filters.items():
if k.startswith('_'):
del filters[k]
filters[k[1:]]=v
queryset=queryset.filter(**filters)
if paginate_by:
paginator = Paginator(queryset, paginate_by,
allow_empty_first_page=allow_empty)
if not page:
page = request.GET.get('page', 1)
try:
page_number = int(page)
except ValueError:
if page == 'last':
page_number = paginator.num_pages
else:
# Page is not 'last', nor can it be converted
to an int.
raise Http404
try:
page_obj = paginator.page(page_number)
except InvalidPage:
raise Http404
c = RequestContext(request, {
'{0}_list'.format(template_object_name):
page_obj.object_list,
'paginator': paginator,
'page': page_obj,
'results_per_page': paginator.per_page,
'pages': paginator.num_pages,
'hits': paginator.count,
'page_range': paginator.page_range,
}, context_processors)
queryset=page_obj.object_list
else:
c = RequestContext(request, {
'%s_list' % template_object_name: queryset,
'paginator': None,
'page_obj': None,
'is_paginated': False,
}, context_processors)
if not allow_empty and len(queryset) == 0:
raise Http404
for key, value in extra_context.items():
if callable(value):
c[key] = value()
else:
c[key] = value
modelMeta=queryset.model()._meta
directory,name=modelMeta.app_label,modelMeta.object_name.lower()
if item_template is None:
item_template='{0}/{1}_list_item.html'.format(directory,name)
if template_name is None:
template_name='{0}/{1}_list.html'.format(directory,name)
item_template = template_loader.get_template(item_template)
responses=[]
c.push()
for item in queryset:
c[template_object_name]=item
item_result=item_template.render(c)
responses.append(item_result)
c.pop()
template=template_loader.get_template(template_name)
c[template_content_name]=mark_safe(''.join(responses))
return HttpResponse(template.render(c), mimetype=mimetype)
basically that will take keyword args and filter based on them like
Gabes methods,
but it also abstracts the item template in to another file.
On Jan 6, 11:01 am, Gabe wrote:
> Hello,
>
> I really like the generic view feature of Django. It's been a handy
> way to save a lot of work. Lately though, I've been finding myself
> often wanting to display a list of objects filtered by some field. The
> documentation suggests handling this by writing a small view that
> filters the objects and then calling the generic view from within
> that. This works fine of course, but it seems that in a lot of cases
> one can end up writing a large number of small views that all simply
> display a filtered list of objects. I figured it might be helpful to
> abstract this behavior into a couple of additional generic
> views. These will automatically filter based on a keyword captured in
> the URL and a field specified in the urls.py file. I've called these
> new views object_list_field and object_list_foreign_field. They are
> included below:
>
> def object_list_field(request, model, field, value, paginate_by=None,
> page=None,
> fv_dict=None, allow_empty=True,
> template_name=None,
> template_loader=loader, extra_context=None,
> context_processors=None,
> template_object_name='object', mimetype=None):
> """Extends generic view object_list to display a list of objects
> filtered
> by an arbitrary field.
> Works only for
