def ajax_form(request, extra_context=None,
template=bookmarks_tags.BookmarkFormNode.template_name):
"""
Called by *ajax_bookmark_form* templatetag, this view accepts AJAX
requests and returns the bookmark form html fragment.
The template used to render the context is the same as the one
used by *bookmark_form* templatetag.
"""
if request.is_ajax():
# getting handler
model_name = request.GET.get('model', '')
model = get_model(*model_name.split('.'))
if model is None:
# invalid model -> bad request
return http.HttpResponseBadRequest(ERRORS['model'])
handler = handlers.library.get_handler(model)
if handler is None:
# bad or unregistered model -> bad request
return http.HttpResponseBadRequest(ERRORS['handler'])
# getting instance
object_id = request.GET.get('object_id')
try:
instance = model.objects.get(pk=object_id)
except (TypeError, ValueError, model.DoesNotExist):
# invalid instance -> bad request
return http.HttpResponseBadRequest(ERRORS['instance'])
# getting form
form = handler.get_form(request, data=request.GET)
# validating the bookmark key
key = handler.get_key(request, instance, request.GET.get('key'))
if not handler.allow_key(request, instance, key):
return http.HttpResponseBadRequest(ERRORS['key'])
# context and template
context = bookmarks_tags.BookmarkFormNode.get_template_context(
request, form, instance, key)
context['next_url'] = request.META.get('HTTP_REFERER') or '/'
if extra_context is not None:
context.update(extra_context)
template = utils.get_templates(instance, key, template)
# output
return render_to_response(template, context,
context_instance=RequestContext(request))
# only answer AJAX requests
return http.HttpResponseForbidden('Forbidden.')
def render(self, context):
# user validation
request = context['request']
if request.user.is_anonymous() and self.varname is not None:
return ''
# instance and handler
instance = self.instance.resolve(context)
handler = handlers.library.get_handler(instance)
# handler validation
if handler is None:
return ''
# key validation
key = handler.get_key(request, instance, self._get_key(context))
if not handler.allow_key(request, instance, key):
return ''
# creating form
data = {
'model': str(instance._meta),
'object_id': str(instance.pk),
'key': key,
}
form = handler.get_form(request, data=data)
if self.varname is None:
# rendering the form
ctx = template.RequestContext(request,
self.get_template_context(context, form, instance, key))
templates = utils.get_templates(instance, key, self.template_name)
return template.loader.render_to_string(templates, ctx)
else:
# form as template variable
context[self.varname] = form
return ''
