Source code for oscar.apps.search.views
from haystack import views
from oscar.apps.search.signals import user_search
from oscar.core.loading import get_class, get_model
Product = get_model("catalogue", "Product")
FacetMunger = get_class("search.facets", "FacetMunger")
[docs]class FacetedSearchView(views.FacetedSearchView):
"""
A modified version of Haystack's FacetedSearchView
Note that facets are configured when the ``SearchQuerySet`` is initialised.
This takes place in the search application class.
See https://django-haystack.readthedocs.io/en/v2.1.0/views_and_forms.html#facetedsearchform
"""
# Haystack uses a different class attribute to CBVs
template = "oscar/search/results.html"
search_signal = user_search
def __call__(self, request):
response = super().__call__(request)
# Raise a signal for other apps to hook into for analytics
self.search_signal.send(
sender=self,
session=self.request.session,
user=self.request.user,
query=self.query,
)
return response
# Override this method to add the spelling suggestion to the context and to
# convert Haystack's default facet data into a more useful structure so we
# have to do less work in the template.
[docs] def extra_context(self):
extra = super().extra_context()
# Show suggestion no matter what. Haystack 2.1 only shows a suggestion
# if there are some results, which seems a bit weird to me.
if self.results.query.backend.include_spelling:
# Note, this triggers an extra call to the search backend
suggestion = self.form.get_suggestion()
if suggestion != self.query:
extra["suggestion"] = suggestion
# Convert facet data into a more useful data structure
if "fields" in extra["facets"]:
munger = FacetMunger(
self.request.get_full_path(),
self.form.selected_multi_facets,
self.results.facet_counts(),
)
extra["facet_data"] = munger.facet_data()
has_facets = any(
[len(data["results"]) for data in extra["facet_data"].values()]
)
extra["has_facets"] = has_facets
# Pass list of selected facets so they can be included in the sorting
# form.
extra["selected_facets"] = self.request.GET.getlist("selected_facets")
return extra
[docs] def get_results(self):
# We're only interested in products (there might be other content types
# in the Solr index).
return super().get_results().models(Product)