问题
I am currently working on a Django/Pinax application (I'm sure my question is not Pinax-specific, that's why Pinax's not mentioned in the theme title), and I'm trying to figure out how the whole framework works. Right now, I have to write a view to pass data to a template. I've only seen it done in the django manual: In the manual, ObjectName.objects.all() is simply passed to render_to_response(). My task is somewhat more complicated, so I've tried to understand how it is done in a pinax application 'profiles', and failed completely.
So, profile.html template file has a line like this:
{% for article in other_user.article_set.all %}
'other_user' is an instance of the 'User' class passed to render_to_response() in views.py. Ok, but article_set is not its class variable. I've failed to find article_set description anywhere in the application code, but found more occurrences of something looking like the same form of call:
{% for bookmark_instance in other_user.saved_bookmarks.all.select_related %}
Searching Django docs only resulted in this page, not telling what 'article_set' exactly is.
What is article_set? Where is it defined and how does it work? Any answers or just documentation links are strongly appreciated. Thank you.
回答1:
See the documentation on following the "backward" relations.
There are also some examples.
回答2:
It's an artificial field created by a ForeignKey or ManyToManyField from the Article model.
来源：https://stackoverflow.com/questions/2303923/where-does-article-set-come-from-in-django