How to use one view on two different pages in Django? - django

Question

I'm building a site with Django 1.5.1. I have Album and Category models defined:
###models.py
class Category(models.Model):
title = models.CharField(max_length=200, unique=True)
class Album(models.Model):
category = models.ForeignKey(Category, related_name='albums')
I've generated a menu to list automatically Categories and their related Albums with this view and template:
###views.py
def index(request):
categories = Category.objects.all()[:5]
context = {'categories': categories}
return render(request, 'gallery/index.html', context)
def detail(request, album_id):
album = get_object_or_404(Album, pk=album_id)
return render(request, 'gallery/detail.html', {'album': album})
###index.html
{% for category in categories %}
{% with category.albums.all as albums %}
{{ category.title }}
{% if albums %}
{% for album in albums %}
{{ album.title }}<br>
{% endfor %}
{% endif %}
{% endwith %}
{% endfor %}
Biography
I also have a view to show each album as a gallery indicates to detail.html. I want to show menu list beside each gallery so I used {% include "gallery/index.html" %} tag at the begining of detail.html. But menu list doesn't show up when detail.html loads, I just see Biography fixed link.
Here is my question: How should I import menu list generated in index.html in detail.html too?

Answer 1

index.html expects to receive categories variable in order to create the menu. If you want to include it in some other template you have to pass the categories variable to the other template for the included one. If you have some conflicts with names you can also pass variables to the include tag like this:
{% include 'include_template.html' with foo=bar%}
So the included template can use the variable foo which has the value bar.
For example, you need to pass the categories variable to the context generating for the detail.html like this:
def detail(request, album_id):
categories = Category.objects.all()[:5]
album = get_object_or_404(Album, pk=album_id)
return render(request,
'gallery/detail.html',
{'album': album,
'categories':categories}
)
And the line that includes the index.html template inside the detail.html template should remain like it is in the question:
{% include "gallery/index.html" %}
What I just did was pass the categories variable needed by index.html for rendering the menu to the detail.html template, which in turn, will pass it to all included template (index.html).
That should get the menu working from within detail.html template.
Hope it helps.