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from django import template
from wagtail.core.models import Page
register = template.Library()
# https://docs.djangoproject.com/en/1.9/howto/custom-template-tags/
@register.simple_tag(takes_context=True)
def get_site_root(context):
# This returns a core.Page. The main menu needs to have the site.root_page
# defined else will return an object attribute error ('str' object has no
# attribute 'get_children')
return context['request'].site.root_page
def has_menu_children(page):
# This is used by the top_menu property
# get_children is a Treebeard API thing
# https://tabo.pe/projects/django-treebeard/docs/4.0.1/api.html
return page.get_children().live().in_menu().exists()
def has_children(page):
# Generically allow index pages to list their children
return page.get_children().live().exists()
def is_active(page, current_page):
# To give us active state on main navigation
return (current_page.url_path.startswith(page.url_path) if current_page else False)
# Retrieves the top menu items - the immediate children of the parent page
# The has_menu_children method is necessary because the Foundation menu requires
# a dropdown class to be applied to a parent
@register.inclusion_tag('home/tags/top_menu.html', takes_context=True)
def top_menu(context, parent, calling_page=None):
menuitems = parent.get_children().live().in_menu()
for menuitem in menuitems:
menuitem.show_dropdown = has_menu_children(menuitem)
# We don't directly check if calling_page is None since the template
# engine can pass an empty string to calling_page
# if the variable passed as calling_page does not exist.
menuitem.active = (calling_page.url_path.startswith(menuitem.url_path)
if calling_page else False)
return {
'calling_page': calling_page,
'menuitems': menuitems,
# required by the pageurl tag that we want to use within this template
'request': context['request'],
}
# Retrieves the children of the top menu items for the drop downs
@register.inclusion_tag('home/tags/top_menu_children.html', takes_context=True)
def top_menu_children(context, parent, calling_page=None):
menuitems_children = parent.get_children()
menuitems_children = menuitems_children.live().in_menu()
for menuitem in menuitems_children:
menuitem.has_dropdown = has_menu_children(menuitem)
# We don't directly check if calling_page is None since the template
# engine can pass an empty string to calling_page
# if the variable passed as calling_page does not exist.
menuitem.active = (calling_page.url_path.startswith(menuitem.url_path)
if calling_page else False)
menuitem.children = menuitem.get_children().live().in_menu()
return {
'parent': parent,
'menuitems_children': menuitems_children,
# required by the pageurl tag that we want to use within this template
'request': context['request'],
}
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