Django tutorial part 3 - question_id vs question.id

Hello,

In trying to update my templates after I successfully finished part 3 of the tutorial, I found that I could write something like

<p>You're looking at the results of question {{ question.id }}: "{{ question.question_text }}"</p>

and get: You're looking at the results of question 1: "What's up?"

However, if I write

<p>You're looking at the results of question {{ question.question_id }}: "{{ question.question_text }}"</p>

I get: You're looking at the results of question : "What's up?"

I think the answer is that "The template system uses dot-lookup syntax to access variable attributes. In the example of {{ question.question_text }}, first Django does a dictionary lookup on the object question."  And "id" is an attribute of the question object.  But if that's the case, then why is "question_id" used everywhere else (views.py, urls.py)?  Is it because we *define* the question_id parameter by the pattern of the incoming request in views.py?  In other words, if we changed ?P<question_id> to ?P<my_favorite_number>, then we would be writing our views like this:

def detail(request, my_favorite_number):
    question = get_object_or_404(Question, pk=my_favorite_number)

but still referencing the id as {{ question.id }} in our templates?

Hmm, I think I might have answered my own question, but I definitely thought I had exhausted my resources before deciding to write this post. ; )

Thank you,

Kurt

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