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from django.core.xheaders import populate_xheaders
from django.template import loader
from django import forms
from django.db.models import FileField
from django.contrib.auth.views import redirect_to_login
from django.template import RequestContext
from django.http import Http404, HttpResponse, HttpResponseRedirect
from django.core.exceptions import ObjectDoesNotExist, ImproperlyConfigured
def create_object(request, model, template_name=None,
template_loader=loader, extra_context=None, post_save_redirect=None,
login_required=False, follow=None, context_processors=None):
"""
Generic object-creation function.
Templates: ``<app_label>/<model_name>_form.html``
Context:
form
the form wrapper for the object
"""
if extra_context is None: extra_context = {}
if login_required and not request.user.is_authenticated():
return redirect_to_login(request.path)
manipulator = model.AddManipulator(follow=follow)
if request.POST:
# If data was POSTed, we're trying to create a new object
new_data = request.POST.copy()
if model._meta.has_field_type(FileField):
new_data.update(request.FILES)
# Check for errors
errors = manipulator.get_validation_errors(new_data)
manipulator.do_html2python(new_data)
if not errors:
# No errors -- this means we can save the data!
new_object = manipulator.save(new_data)
if request.user.is_authenticated():
request.user.message_set.create(message="The %s was created successfully." % model._meta.verbose_name)
# Redirect to the new object: first by trying post_save_redirect,
# then by obj.get_absolute_url; fail if neither works.
if post_save_redirect:
return HttpResponseRedirect(post_save_redirect % new_object.__dict__)
elif hasattr(new_object, 'get_absolute_url'):
return HttpResponseRedirect(new_object.get_absolute_url())
else:
raise ImproperlyConfigured("No URL to redirect to from generic create view.")
else:
# No POST, so we want a brand new form without any data or errors
errors = {}
new_data = manipulator.flatten_data()
# Create the FormWrapper, template, context, response
form = forms.FormWrapper(manipulator, new_data, errors)
if not template_name:
template_name = "%s/%s_form.html" % (model._meta.app_label, model._meta.object_name.lower())
t = template_loader.get_template(template_name)
c = RequestContext(request, {
'form': form,
}, context_processors)
for key, value in extra_context.items():
if callable(value):
c[key] = value()
else:
c[key] = value
return HttpResponse(t.render(c))
def update_object(request, model, object_id=None, slug=None,
slug_field=None, template_name=None, template_loader=loader,
extra_context=None, post_save_redirect=None,
login_required=False, follow=None, context_processors=None,
template_object_name='object'):
"""
Generic object-update function.
Templates: ``<app_label>/<model_name>_form.html``
Context:
form
the form wrapper for the object
object
the original object being edited
"""
if extra_context is None: extra_context = {}
if login_required and not request.user.is_authenticated():
return redirect_to_login(request.path)
# Look up the object to be edited
lookup_kwargs = {}
if object_id:
lookup_kwargs['%s__exact' % model._meta.pk.name] = object_id
elif slug and slug_field:
lookup_kwargs['%s__exact' % slug_field] = slug
else:
raise AttributeError("Generic edit view must be called with either an object_id or a slug/slug_field")
try:
object = model.objects.get(**lookup_kwargs)
except ObjectDoesNotExist:
raise Http404, "No %s found for %s" % (model._meta.verbose_name, lookup_kwargs)
manipulator = model.ChangeManipulator(getattr(object, object._meta.pk.name), follow=follow)
if request.POST:
new_data = request.POST.copy()
if model._meta.has_field_type(FileField):
new_data.update(request.FILES)
errors = manipulator.get_validation_errors(new_data)
manipulator.do_html2python(new_data)
if not errors:
object = manipulator.save(new_data)
if request.user.is_authenticated():
request.user.message_set.create(message="The %s was updated successfully." % model._meta.verbose_name)
# Do a post-after-redirect so that reload works, etc.
if post_save_redirect:
return HttpResponseRedirect(post_save_redirect % object.__dict__)
elif hasattr(object, 'get_absolute_url'):
return HttpResponseRedirect(object.get_absolute_url())
else:
raise ImproperlyConfigured("No URL to redirect to from generic create view.")
else:
errors = {}
# This makes sure the form acurate represents the fields of the place.
new_data = manipulator.flatten_data()
form = forms.FormWrapper(manipulator, new_data, errors)
if not template_name:
template_name = "%s/%s_form.html" % (model._meta.app_label, model._meta.object_name.lower())
t = template_loader.get_template(template_name)
c = RequestContext(request, {
'form': form,
template_object_name: object,
}, context_processors)
for key, value in extra_context.items():
if callable(value):
c[key] = value()
else:
c[key] = value
response = HttpResponse(t.render(c))
populate_xheaders(request, response, model, getattr(object, object._meta.pk.name))
return response
def delete_object(request, model, post_delete_redirect,
object_id=None, slug=None, slug_field=None, template_name=None,
template_loader=loader, extra_context=None,
login_required=False, context_processors=None, template_object_name='object'):
"""
Generic object-delete function.
The given template will be used to confirm deletetion if this view is
fetched using GET; for safty, deletion will only be performed if this
view is POSTed.
Templates: ``<app_label>/<model_name>_confirm_delete.html``
Context:
object
the original object being deleted
"""
if extra_context is None: extra_context = {}
if login_required and not request.user.is_authenticated():
return redirect_to_login(request.path)
# Look up the object to be edited
lookup_kwargs = {}
if object_id:
lookup_kwargs['%s__exact' % model._meta.pk.name] = object_id
elif slug and slug_field:
lookup_kwargs['%s__exact' % slug_field] = slug
else:
raise AttributeError("Generic delete view must be called with either an object_id or a slug/slug_field")
try:
object = model._default_manager.get(**lookup_kwargs)
except ObjectDoesNotExist:
raise Http404, "No %s found for %s" % (model._meta.app_label, lookup_kwargs)
if request.method == 'POST':
object.delete()
if request.user.is_authenticated():
request.user.message_set.create(message="The %s was deleted." % model._meta.verbose_name)
return HttpResponseRedirect(post_delete_redirect)
else:
if not template_name:
template_name = "%s/%s_confirm_delete.html" % (model._meta.app_label, model._meta.object_name.lower())
t = template_loader.get_template(template_name)
c = RequestContext(request, {
template_object_name: object,
}, context_processors)
for key, value in extra_context.items():
if callable(value):
c[key] = value()
else:
c[key] = value
response = HttpResponse(t.render(c))
populate_xheaders(request, response, model, getattr(object, object._meta.pk.name))
return response
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