from django.http import HttpResponse, HttpResponseNotAllowed, HttpResponseForbidden, HttpResponseBadRequest
from django.utils.safestring import mark_safe
from django.utils.decorators import available_attrs
from django.utils import simplejson
from functools import wraps
_ERROR_MSG = '<!DOCTYPE html><html lang="en"><body><h1>%s</h1><p>%%s</p></body></html>'
_400_ERROR = _ERROR_MSG % '400 Bad Request'
_403_ERROR = _ERROR_MSG % '403 Forbidden'
_405_ERROR = _ERROR_MSG % '405 Not Allowed'
"""
usage:
@ajax_view
def foo():
or
@ajax_view(option)
def foo():
"""
def ajax_view(function=None, FormClass=None, method="GET", login_required=True, ajax_required=True, json_form_errors=False):
def decorator(view_func):
@wraps(view_func, assigned=available_attrs(view_func))
def _ajax_view(request, *args, **kwargs):
if request.method != method and method != 'REQUEST':
return HttpResponseNotAllowed(mark_safe(_405_ERROR % ("Request must be a %s." % method)))
if ajax_required and not request.is_ajax():
return HttpResponseForbidden(mark_safe(_403_ERROR % "Request must be set via AJAX."))
if login_required and not request.user.is_authenticated():
return HttpResponseForbidden(mark_safe(_403_ERROR % "Login required"))
if FormClass:
f = FormClass(getattr(request, method))
if not f.is_valid():
if json_form_errors:
errors = dict((k, [unicode(x) for x in v]) for k,v in f.errors.items())
return HttpResponse(simplejson.dumps({'error': 'form', 'errors': errors}), 'application/json')
else:
return HttpResponseBadRequest(mark_safe(_400_ERROR % ('Invalid form<br />' + f.errors.as_ul())))
request.form = f
return view_func(request, *args, **kwargs)
return _ajax_view
if function:
return decorator(function)
return decorator
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