def build_breadcrumb(self):
# Build breadcrumb for selected category.
breadcrumb = category_util.build_breadcrumb(self.selected_category)[1:-1]
breadcrumb.reverse()
for breadcrumb_category in breadcrumb:
breadcrumb_category.url = reverse(
'browse', kwargs={
'category_slug': breadcrumb_category.url
}
)
self.breadcrumb = breadcrumb
def get_serialized_category(self, category):
# TODO(Varun): Cache this call.
if category.id not in self.categories:
breadcrumb = category_util.build_breadcrumb(category)
self.categories[category.id] = {
'id': category.id,
'title': category.title,
'slug': category.slug,
'url': reverse(
'browse', kwargs={
'category_slug': breadcrumb[0].url
}
)
}
return self.categories[category.id]
def standard(request, tag_title):
# Get the tag.
try:
tag = Tag.objects.get(title=tag_title)
except:
raise Http404
# Get public resources associated with the tag.
from oer.models import Resource
resources = Resource.objects.filter(tags=tag)[:20]
category = Category.objects.filter(tags=tag)[0]
breadcrumb = catU.build_breadcrumb(category)
breadcrumb_urlized = []
for breadcrumb_category in breadcrumb:
if breadcrumb_category.parent.slug == 'standards':
break
try:
breadcrumb_urlized.append(standard_urlize(breadcrumb_category.parent))
# HACK(Varun): For practice standards whose parent has been ripped away.
except:
breadcrumb_category.url = ''
breadcrumb_urlized.append(breadcrumb_category)
breadcrumb_urlized.reverse()
context = {
'tag': tag,
'resources': resources,
'breadcrumb': breadcrumb_urlized,
'title': tag.title + " ‹ OpenCurriculum"
}
return render(request, 'standard.html', context)
def _get_category_url(node):
import meta.CategoryUtilities as catU
breadcrumb = catU.build_breadcrumb(node)
return reverse("browse", kwargs={"category_slug": breadcrumb[0].url})
def process_category_slug(self):
categories_slugs = self.category_slug.split('/')
# Determine the depth to figure out what level of page needs to be displayed.
try:
host_category = Category.objects.filter(slug=categories_slugs[0])
if host_category.count() == 0:
raise Http404
else:
host_category = host_category[0]
if categories_slugs[0] != 'common-core':
self.is_common_core_hosted = False
else:
self.is_common_core_hosted = True
(host_browse_tree, host_flattened_tree) = category_util.build_child_categories(
{'root': [host_category]}, [])
# Assume that there is a unique pair of child/parent relationship in any
# host category. Breaks on the edge case where this pair is found twice.
try:
self.current_category = Category.objects.get(
slug=categories_slugs[-1], parent__slug=categories_slugs[-2])
except IndexError:
try:
self.current_category = Category.objects.get(slug=categories_slugs[-1])
except MultipleObjectsReturned:
self.current_category = Category.objects.filter(slug=categories_slugs[-1])[0]
except MultipleObjectsReturned:
# Find the unique combinator inside the host tree.
self.current_category = next(category for category in host_flattened_tree if(
category.slug == categories_slugs[-1] and category.parent.slug == categories_slugs[-2]))
except Category.DoesNotExist:
raise Http404
# Determine subject if subject.
try:
self.subject_category = Category.objects.get(
slug=categories_slugs[1], parent__slug=categories_slugs[0])
except:
pass
for category in host_flattened_tree:
if category == self.current_category:
self.selected_category = category
if not self.selected_category:
raise Http404
if len(categories_slugs) == 1:
self.return_url = None
else:
return_category_slug = category_util.build_breadcrumb(self.selected_category.parent.parent)[0].url
if return_category_slug != '':
self.return_url = reverse(
'browse', kwargs={
'category_slug': return_category_slug
}
)
else:
self.return_url = reverse('browse_default')
if len(categories_slugs) == 2:
self.is_subject_home = True
# Build the breadcrumb associated with this slug.
self.build_breadcrumb()
except""" Exception, e""":
# from django.core.mail import mail_admins
# mail_admins('Browse failed to render category', str(e) + category_slug)
# Happens either when the slug is not found.
raise Http404
return {
'host_category': host_category,
}
def build_child_tree(root_node):
# Get the list of child of this node.
nodes = list(itertools.chain.from_iterable(root_node.values()))
node_elements = []
# Create <li> nodes for each.
for node in nodes:
node_element = ElementTree.Element('li')
if type(node) is dict:
current_node = get_root_key(node)
else:
current_node = node
# Determine whether the node is a tag or category.
if type(current_node).__name__.lower() == 'category':
node_type = 'category'
else:
node_type = 'tag'
# If this child has other children, build child tree.
# Has to be the case of our tag category.
if type(node) is dict:
# Set a class to indicate that this element has child collections.
node_element.set('class', 'parent-category')
node_toggler = ElementTree.SubElement(node_element, 'span')
node_toggler.set('class', 'toggle-category')
node_toggler.text = ' '
node_href = ElementTree.SubElement(node_element, 'a')
node_href.set('href', reverse('browse', kwargs={
'category_slug': catU.build_breadcrumb(current_node)[0].url }))
node_href.set('id', 'category-' + str(current_node.id))
node_href.text = current_node.title
nodeList = ElementTree.SubElement(node_element, 'ul')
child_nodes = build_child_tree(node)
for child_node in child_nodes:
nodeList.append(child_node)
# Otherwise, append a child <a> element as is.
# Can be a tag category or a tag.
else:
# Set a class to indicate that this element does not have child collections.
node_element.set('class', 'empty-category' if node_type == 'category' else 'empty-tag')
node_toggler = ElementTree.SubElement(node_element, 'span')
node_toggler.set(
'class', 'toggle-category' if node_type == 'category' else 'toggle-tag')
node_toggler.text = ' '
node_href = ElementTree.SubElement(node_element, 'a')
if node_type == 'category':
node_href.set('href', reverse('browse', kwargs={
'category_slug': catU.build_breadcrumb(current_node)[0].url }))
else:
node_href.set('href', reverse('meta:standard', kwargs={
'tag_title': current_node.title }))
node_href.set(
'id', ('category-' if node_type == 'category' else 'tag-') + str(current_node.id))
node_href.text = current_node.title if node_type == 'category' else (
current_node.title + ': ' + (current_node.description if current_node.description else ''))
node_elements.append(node_element)
return node_elements
