def build_page(self):
"""For some reason occasionally the default pagination contains Nones
(probably a bug in django-haystack. We don't want that."""
# Copied from super()
try:
page_no = int(self.request.GET.get('page', 1))
except (TypeError, ValueError):
raise Http404("Not a valid number for page.")
if page_no < 1:
raise Http404("Pages should be 1 or greater.")
start_offset = (page_no - 1) * self.results_per_page
self.results = self.results.load_all() # Force haystack to pull all 'Product' objects at the same time
self.results[start_offset:start_offset + self.results_per_page]
paginator = Paginator(self.results, self.results_per_page)
# My stuff
try:
page = paginator.page(page_no)
except EmptyPage:
page = Page([], page_no, paginator)
page.object_list = [o for o in page.object_list if o is not None]
return paginator, page
def page(self, number):
"""
Returns a page object.
This class overrides the default behavior and ignores "orphans" and
assigns the count from the ES result to the Paginator.
"""
number = self.validate_number(number)
bottom = (number - 1) * self.per_page
top = bottom + self.per_page
page = Page(self.object_list[bottom:top], number, self)
# Force the search to evaluate and then attach the count. We want to
# avoid an extra useless query even if there are no results, so we
# directly fetch the count from hits.
# Overwrite `object_list` with the list of ES results.
page.object_list = page.object_list.execute().hits
# Update the `_count`.
self._count = page.object_list.total
# Now that we have the count validate that the page number isn't higher
# than the possible number of pages and adjust accordingly.
if number > self.num_pages:
if number == 1 and self.allow_empty_first_page:
pass
else:
raise EmptyPage('That page contains no results')
return page
def _get_page(self, *args, **kwargs):
page = Page(*args, **kwargs)
if page.has_next():
page.next_page_first_item = page[-1]
page.object_list = page.object_list[:-1]
else:
page.next_page_first_item = None
return page
def _get_page(self, *args, **kwargs):
page = Page(*args, **kwargs)
if page.has_next():
page.next_page_first_item = page[-1]
page.object_list = page.object_list[:-1]
else:
page.next_page_first_item = None
return page
def page(self, number):
"""
Returns a page object.
This class overrides the default behavior and ignores "orphans" and
assigns the count from the ES result to the Paginator.
"""
number = self.validate_number(number)
bottom = (number - 1) * self.per_page
top = bottom + self.per_page
page = Page(self.object_list[bottom:top], number, self)
# Force the search to evaluate and then attach the count. We want to
# avoid an extra useless query even if there are no results, so we
# directly fetch the count from hits.
# Overwrite `object_list` with the list of ES results.
page.object_list = page.object_list.execute().hits
# Update the `_count`.
self._count = page.object_list.total
return page
def page(self, number):
"""
Returns a page object.
This class overrides the default behavior and ignores "orphans" and
assigns the count from the ES result to the Paginator.
"""
number = self.validate_number(number)
bottom = (number - 1) * self.per_page
top = bottom + self.per_page
page = Page(self.object_list[bottom:top], number, self)
# Force the search to evaluate and then attach the count. We want to
# avoid an extra useless query even if there are no results, so we
# directly fetch the count from hits.
# Overwrite `object_list` with the list of ES results.
page.object_list = page.object_list.execute().hits
# Update the `_count`.
self._count = page.object_list.total
return page
def check_if_liked_page(user: User, page: Page):
page.object_list = [
check_if_liked_post(user, post) for post in page.object_list
]
return page
