from django import models from django.core.xheaders import populate_xheaders from django.core import template_loader, formfields from django.views.auth.login import redirect_to_login from django.core.extensions import DjangoContext as Context from django.core.paginator import ObjectPaginator, InvalidPage from django.utils.httpwrappers import HttpResponse, HttpResponseRedirect from django.core.exceptions import Http404, ObjectDoesNotExist, ImproperlyConfigured def create_object(request, app_label, module_name, template_name=None, extra_context={}, post_save_redirect=None, login_required=False): """ Generic object-creation function. Templates: ``/_form`` Context: form the form wrapper for the object """ if login_required and request.user.is_anonymous(): return redirect_to_login(request) mod = models.get_module(app_label, module_name) manipulator = mod.AddManipulator() if request.POST: # If data was POSTed, we're trying to create a new object new_data = request.POST.copy() # Check for errors errors = manipulator.get_validation_errors(new_data) if not errors: # No errors -- this means we can save the data! manipulator.do_html2python(new_data) new_object = manipulator.save(new_data) if not request.user.is_anonymous(): request.user.add_message("The %s was created sucessfully." % mod.Klass._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 = {} # Create the FormWrapper, template, context, response form = formfields.FormWrapper(manipulator, new_data, errors) if not template_name: template_name = "%s/%s_form" % (app_label, module_name) t = template_loader.get_template(template_name) c = Context(request, { 'form' : form, }) 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, app_label, module_name, object_id=None, slug=None, slug_field=None, template_name=None, extra_lookup_kwargs={}, extra_context={}, post_save_redirect=None, login_required=False): """ Generic object-update function. Templates: ``/_form`` Context: form the form wrapper for the object object the original object being edited """ if login_required and request.user.is_anonymous(): return redirect_to_login(request) mod = models.get_module(app_label, module_name) # Look up the object to be edited lookup_kwargs = {} if object_id: lookup_kwargs['%s__exact' % mod.Klass._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") lookup_kwargs.update(extra_lookup_kwargs) try: object = mod.get_object(**lookup_kwargs) except ObjectDoesNotExist: raise Http404("%s.%s does not exist for %s" % (app_label, module_name, lookup_kwargs)) manipulator = mod.ChangeManipulator(object.id) if request.POST: new_data = request.POST.copy() errors = manipulator.get_validation_errors(new_data) if not errors: manipulator.do_html2python(new_data) manipulator.save(new_data) if not request.user.is_anonymous(): request.user.add_message("The %s was updated sucessfully." % mod.Klass._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 = object.__dict__ form = formfields.FormWrapper(manipulator, new_data, errors) if not template_name: template_name = "%s/%s_form" % (app_label, module_name) t = template_loader.get_template(template_name) c = Context(request, { 'form' : form, 'object' : object, }) 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, app_label, module_name, getattr(object, object._meta.pk.name)) return response def delete_object(request, app_label, module_name, post_delete_redirect, object_id=None, slug=None, slug_field=None, template_name=None, extra_lookup_kwargs={}, extra_context={}, login_required=False): """ 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: ``/_confirm_delete`` Context: object the original object being deleted """ if login_required and request.user.is_anonymous(): return redirect_to_login(request) mod = models.get_module(app_label, module_name) # Look up the object to be edited lookup_kwargs = {} if object_id: lookup_kwargs['%s__exact' % mod.Klass._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") lookup_kwargs.update(extra_lookup_kwargs) try: object = mod.get_object(**lookup_kwargs) except ObjectDoesNotExist: raise Http404("%s.%s does not exist for %s" % (app_label, module_name, lookup_kwargs)) if request.META['REQUEST_METHOD'] == 'POST': object.delete() if not request.user.is_anonymous(): request.user.add_message("The %s was deleted." % mod.Klass._meta.verbose_name) return HttpResponseRedirect(post_delete_redirect) else: if not template_name: template_name = "%s/%s_confirm_delete" % (app_label, module_name) t = template_loader.get_template(template_name) c = Context(request, { 'object' : object, }) 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, app_label, module_name, getattr(object, object._meta.pk.name)) return response