Hello!
Here's my problem. I am trying to design a simple wiki-like CMS, with
3 different types of editable pages.
1. Text
2. Images
3. Audio
All of these 3 have their own class, derived from an abstract base
class which contains things shared in common by them all (is this page
locked, last_changed_date, etc...) In my abstract Page class, I set:
class Meta:
abstract = True
This creates 3 different tables for each of the subclasses.
Each page has a foreign key (called 'wrapper') that points to a giant
table with all of the article/page names.
Let's say I want to get the latest page for an image, I can have a
function that does something like this:
def getLatestPage(pageName, namespace):
q = PageNameTable.objects.filter(namespace__exact=namespace)
q = q.filter(name__exact=name)
# get a list of all the objects pointing to this name
# ***ImageTable hardcoded in?***
revisions = ImageTable.objects.filter(wrapper__name__exact=name,
wrapper__namespace__exact=namespace)
revisions = res.order_by('revision__changeDate')
This code works fine when I am using only Images. _But_ the ImageTable
is hardcoded in. I can't grab an object from a TextTable or
AudioTable. I thought of using python's 'eval()' to run the code, but
this seems like a bad idea maybe from a security point.
How can I make this code run on the different tables? Any ideas?
Is my database design completely screwed up, or can django help me
here?
Thank you!
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