Using Shipherd in the Admin
===========================
The navigation mechanism is fairly complex; unfortunately, there's no real way around that - without a lot of equally complex code that you are quite welcome to write and contribute! ;-)
For this guide, we'll assume that you have the setup described in :doc:`getting-started`. We'll be adding a main :class:`.Navigation` to the root :class:`.Node` and making it display as part of the :class:`.Template`.
Before getting started, make sure that you've added :mod:`philo.contrib.shipherd` to your :setting:`INSTALLED_APPS`. :mod:`~philo.contrib.shipherd` template tags also require the request context processor, so make sure to set :setting:`TEMPLATE_CONTEXT_PROCESSORS` appropriately::
TEMPLATE_CONTEXT_PROCESSORS = (
# Defaults
"django.contrib.auth.context_processors.auth",
"django.core.context_processors.debug",
"django.core.context_processors.i18n",
"django.core.context_processors.media",
"django.core.context_processors.static",
"django.contrib.messages.context_processors.messages"
...
"django.core.context_processors.request"
)
Creating the Navigation
+++++++++++++++++++++++
Start off by adding a new :class:`.Navigation` instance with :attr:`~.Navigation.node` set to the good ole' ``root`` node and :attr:`~.Navigation.key` set to ``main``. The default :attr:`~.Navigation.depth` of 3 is fine.
Now open up that first inline :class:`.NavigationItem`. Make the text ``Hello World`` and set the target :class:`.Node` to, again, ``root``. (Of course, this is a special case. If we had another node that we wanted to point to, we would choose that.)
Press save and you've created your first navigation.
Displaying the Navigation
+++++++++++++++++++++++++
All you need to do now is show the navigation in the template! This is quite easy, using the :ttag:`~philo.contrib.shipherd.templatetags.shipherd.recursenavigation` templatetag. For now we'll keep it simple. Adjust the "Hello World Template" to look like this::
{% load shipherd %}
{% container page_title %}
{% recursenavigation node "main" %}
{{ item.text }}
{% endrecursenavigation %}
{% container page_body as content %}
{% if content %}
{{ content }}
{% endif %}
The time is {% now %}.
Now have a look at the page - your navigation is there!
Linking to google
+++++++++++++++++
Edit the ``main`` :class:`.Navigation` again to add another :class:`.NavigationItem`. This time give it the :attr:`~.NavigationItem.text` ``Google`` and set the :attr:`~.TargetURLModel.url_or_subpath` field to ``http://google.com``. A navigation item will show up on the Hello World page that points to ``google.com``! Granted, your navigation probably shouldn't do that, because confusing navigation is confusing; the point is that it is possible to provide navigation to arbitrary URLs.
:attr:`~.TargetURLModel.url_or_subpath` can also be used in conjuction with a :class:`.Node` to link to a subpath beyond that :class:`.Node`'s url.