Source code for oscar.apps.catalogue.views

from urllib.parse import quote

from django.contrib import messages
from django.core.paginator import InvalidPage
from django.http import Http404, HttpResponsePermanentRedirect
from django.shortcuts import get_object_or_404, redirect
from django.utils.translation import gettext_lazy as _
from django.views.generic import DetailView, TemplateView

from oscar.apps.catalogue.signals import product_viewed
from oscar.core.loading import get_class, get_model

Product = get_model('catalogue', 'product')
Category = get_model('catalogue', 'category')
ProductAlert = get_model('customer', 'ProductAlert')
ProductAlertForm = get_class('customer.forms', 'ProductAlertForm')
get_product_search_handler_class = get_class(
    'catalogue.search_handlers', 'get_product_search_handler_class')

[docs]class ProductDetailView(DetailView): context_object_name = 'product' model = Product view_signal = product_viewed template_folder = "catalogue" # Whether to redirect to the URL with the right path enforce_paths = True # Whether to redirect child products to their parent's URL. If it's disabled, # we display variant product details on the separate page. Otherwise, details # displayed on parent product page. enforce_parent = False
[docs] def get(self, request, **kwargs): """ Ensures that the correct URL is used before rendering a response """ self.object = product = self.get_object() redirect = self.redirect_if_necessary(request.path, product) if redirect is not None: return redirect # Do allow staff members so they can test layout etc. if not self.is_viewable(product, request): raise Http404() response = super().get(request, **kwargs) self.send_signal(request, response, product) return response
def is_viewable(self, product, request): return product.is_public or request.user.is_staff
[docs] def get_object(self, queryset=None): # Check if self.object is already set to prevent unnecessary DB calls if hasattr(self, 'object'): return self.object else: return super().get_object(queryset)
def redirect_if_necessary(self, current_path, product): if self.enforce_parent and product.is_child: return HttpResponsePermanentRedirect( product.parent.get_absolute_url()) if self.enforce_paths: expected_path = product.get_absolute_url() if expected_path != quote(current_path): return HttpResponsePermanentRedirect(expected_path)
[docs] def get_context_data(self, **kwargs): ctx = super().get_context_data(**kwargs) ctx['alert_form'] = self.get_alert_form() ctx['has_active_alert'] = self.get_alert_status() return ctx
def get_alert_status(self): # Check if this user already have an alert for this product has_alert = False if self.request.user.is_authenticated: alerts = ProductAlert.objects.filter( product=self.object, user=self.request.user, status=ProductAlert.ACTIVE) has_alert = alerts.exists() return has_alert def get_alert_form(self): return ProductAlertForm( user=self.request.user, product=self.object) def send_signal(self, request, response, product): self.view_signal.send( sender=self, product=product, user=request.user, request=request, response=response)
[docs] def get_template_names(self): """ Return a list of possible templates. If an overriding class sets a template name, we use that. Otherwise, we try 2 options before defaulting to :file:`catalogue/detail.html`: 1. :file:`detail-for-upc-{upc}.html` 2. :file:`detail-for-class-{classname}.html` This allows alternative templates to be provided for a per-product and a per-item-class basis. """ if self.template_name: return [self.template_name] return [ 'oscar/%s/detail-for-upc-%s.html' % ( self.template_folder, self.object.upc), 'oscar/%s/detail-for-class-%s.html' % ( self.template_folder, self.object.get_product_class().slug), 'oscar/%s/detail.html' % self.template_folder]
[docs]class CatalogueView(TemplateView): """ Browse all products in the catalogue """ context_object_name = "products" template_name = 'oscar/catalogue/browse.html' def get(self, request, *args, **kwargs): try: self.search_handler = self.get_search_handler( self.request.GET, request.get_full_path(), []) except InvalidPage: # Redirect to page one. messages.error(request, _('The given page number was invalid.')) return redirect('catalogue:index') return super().get(request, *args, **kwargs) def get_search_handler(self, *args, **kwargs): return get_product_search_handler_class()(*args, **kwargs) def get_context_data(self, **kwargs): ctx = {} ctx['summary'] = _("All products") search_context = self.search_handler.get_search_context_data( self.context_object_name) ctx.update(search_context) return ctx
[docs]class ProductCategoryView(TemplateView): """ Browse products in a given category """ context_object_name = "products" template_name = 'oscar/catalogue/category.html' enforce_paths = True def get(self, request, *args, **kwargs): # Fetch the category; return 404 or redirect as needed self.category = self.get_category() # Allow staff members so they can test layout etc. if not self.is_viewable(self.category, request): raise Http404() potential_redirect = self.redirect_if_necessary( request.path, self.category) if potential_redirect is not None: return potential_redirect try: self.search_handler = self.get_search_handler( request.GET, request.get_full_path(), self.get_categories()) except InvalidPage: messages.error(request, _('The given page number was invalid.')) return redirect(self.category.get_absolute_url()) return super().get(request, *args, **kwargs) def is_viewable(self, category, request): return category.is_public or request.user.is_staff def get_category(self): return get_object_or_404(Category, pk=self.kwargs['pk']) def redirect_if_necessary(self, current_path, category): if self.enforce_paths: # Categories are fetched by primary key to allow slug changes. # If the slug has changed, issue a redirect. expected_path = category.get_absolute_url() if expected_path != quote(current_path): return HttpResponsePermanentRedirect(expected_path) def get_search_handler(self, *args, **kwargs): return get_product_search_handler_class()(*args, **kwargs)
[docs] def get_categories(self): """ Return a list of the current category and its ancestors """ return self.category.get_descendants_and_self()
def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context['category'] = self.category search_context = self.search_handler.get_search_context_data( self.context_object_name) context.update(search_context) return context