In my attached models.py I have a class that has a model method to
return the time last modified on the latest object that has a foreign
key to it.
So when I made a new document, in the admin interface I see April 11,
2013, 8:24 p.m. for the Created column and 2013-04-11 20:24:36.799167
for the Last Modified column.
Also I can click to sort the results by Created date, but not by last
modified date.
How can I sanitize the Last Modified field so that it appears like
Created does and I can sort by it?
Additionally in the same file in the model method I am using a for-loop
to get the value for Last Modified. I imagine going through each object
just to pull the data from the last one isn't very efficient and pretty
redundant. I tried to just pull the last object directly but am getting
an error:
TemplateSyntaxError at /admin/grace/document/
Caught IndexError while rendering: list index out of range
--
Mike Doroshenko, Junior Sys Admin
TecKnoQuest Inc.
mi...@tecknoquest.com
www.tecknoquest.com
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from django.db import models
import datetime
class Document(models.Model):
name = models.CharField(max_length=22)
created = models.DateTimeField(auto_now_add=True)
def __unicode__(self):
return self.name
def last_modified(self):
for m in self.piece_set.all():
global x
x = m.last_modified
date = x
#obj = self.piece_set.order_by("-id")[0]
#date = obj.last_modified
# Causes IndexError when rendering template in admin interface.
return date
class Piece(models.Model):
sort_int = models.IntegerField()
doc = models.ForeignKey(Document)
text = models.TextField()
last_modified = models.DateTimeField(auto_now=True)
def __unicode__(self):
return "%s: %d" % (self.doc.name, self.sort_int)
