I want to override delete()
===
from django.db import models
class Person(models.Model):
first_name = models.CharField(maxlength=20)
last_name = models.CharField(maxlength=20)
def delete(self):
if ( A ):
super(Person, self).dele
First I should thank Ivan for your help. But I think Malcolm figured
out what I really want.
Maybe django should catch Exception when calling a model's save /
delete method.
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When use something like this in a template
{{ message }} X
and render it in this way:
c = Context({'message':s}) # s is an string encoded in utf-8
Response(template.render(c))
What I got is:
'\x??\x??..\x??\x??'
What's the problem??
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Actually, it's not the problem of encoding, I think.
For example, if s is a string, the render() method should treate {{ s
}} in the way print() does. But now what I see on the page is
something like you see in a interactive python console.
>>> print s
XXX #Some text
>>> s
'\x0f\xde' #thi
Hi all,
I met a problem.
When I added a Foreign Key field to list_display, django falls into a
dead loop and used up memories.
When I removed the field, it's all OK.
I don't think it's my code's problem because I've tested the __str__
function of both models related by the Foreign Key.
Could
Eh, I've figured it out.
The message I sent to the template is not a string "XXX" but a list
["XXX"].
That's why I see "\x??\x??" on the rendered page
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"Django users"
^C dose not help me.
I think it's because django is multithreaded.
But after I have inserted a lot of print in the codes, I found where
the program stopped.
django.db.models.QuerySet.__repr__
called
repr(self._get_data())
And it stopped there. I will trace down to see what happenned tomorrow
Hah!
I've just found what happened!
django.db.models.fill_cache_table is a function that calls itself until
it processed all table connected by FK.
But if there is a loop in FK relations, it will never stopped!
I will see if I could make a simple patch for it.
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1Name, Col1Name, table2Name, ColName], ]
And before any FK to be processed, it must be check that if it's
already in this para.
Perhaps it's not so efficient, but I think it will work.
I will fill a ticket as soon as possible.
Malcolm Tredinnick wrote:
> On Tue, 2006-08-15 at 23:2
I have a table like this
id | name | parentid
And parentid is a Foreign Key to ID.
So I have a tree in my database. My question is that, how can I
represent it on the web as a tree. Something like this :
http://community.csdn.net/
or simply this :
http://www.smth.org/frames.html
Is there
Here is my fix for fill_table_cache
===
def fill_table_cache(opts, select, tables,
where,old_prefix,cache_tables_seen,processed = {}):
"""
Helper function that recursively populates the select, tables and
where (in
place) for select
Hehe, but again, there would be a infinite loop in
django\db\models\query.py in get_cached_row
That's because this record in
Here's my patch
=
def get_cached_row(klass, row, index_start, processed={}):
"Helper function that recursively returns an object
Hi all!
Django provides a Ip Address Field. But actually it's a CharField with
some IP formate check.
But in my database, ip addresss are stored in 4 bytes int form. So I
was considering if it's prossible to SubClass Field to create my own
Field Type.
I will post my code here if I found it's
Hi all
In most cases, web application has a database for it's own use. It
allow users to change data and present data to user. It dose not have
to know any other programs but the database. I think Django is perfect
for this kind of use.
I hope my problem would be the same. I have to write a
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