Hi all,
I'm having trouble restricting the values of the drop-down boxes on an
edit_inline admin section to reflect the value of the parent page that
it's being edited in. For example (this is not my project, but something
simpler I just thought of).
Say, for some bizarre reason, I wanted to record the people I'd seen at
parties, and the conversations I'd had with them. I'd have a Party model
with some info, and a Partygoer model linked by FK to a Party. Then I'd
have a Conversation model.
class Party(models.Model):
<basic info>
class Partygoer(models.Model):
<basic info>
party = models.ForeignKey(Party)
class Conversation(models.Model):
party = models.ForeignKey(Party, edit_inline=models.TABULAR)
partygoer = models.ForeignKey(Partygoer, core=True)
subject = models.CharField(max_length=50)
Now, I really only need a foreign key linking a Conversation with a
Partygoer (because that would, in turn, link it to a party), but I want
to be able to add conversations inline via the Party page instead, so I
add an FK to Party as well, and set it to edit_inline.
Assuming that the database is full of Parties and Partygoers, I can then
go to the Party admin page and add a Conversation by selecting a
Partygoer in the drop down box. This all works OK - but the list of
Partygoers would be unnecessarily long. It should only show Partygoers
from that one Party - the one whose page I'm currently on. However, it
shows a complete list of Partygoers instead.
This seems quite pointless now, but my real application (nothing to do
with parties!) has quite a lot of data, and the drop-downs are filled
with hundreds of unnecessary entries. How can I restrict it to just the
applicable ones? Is there an edit_inline setting I'm missing, or is the
admin system just not built for this kind of relationship?
Many thanks,
Mathew.
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