Help about tutorial1 (about Poll object)
Nicolas Steinmetz
I'm new in Django (so hello world :) ) but I have one question about
tutorial1.
Cf : http://www.djangoproject.com/documentation/tutorial1/
In polls/models.py, we have already two classes :
from django.db import models
# Create your models here.
class Poll(models.Model):
question = models.CharField(maxlength=200)
pub_date = models.DateTimeField('date published')
class Choice(models.Model):
poll = models.ForeignKey(Poll)
choice = models.CharField(maxlength=200)
votes = models.IntegerField()
Do we have to add __str__() methodes after pub_date and votes lines or
to remove them ?
If I do :
from django.db import models
import datetime
# Create your models here.
class Poll(models.Model):
question = models.CharField(maxlength=200)
pub_date = models.DateTimeField('date published')
def __str__(self):
return self.question
def was_published_today(self):
return self.pub_date.date() == datetime.date.today()
class Choice(models.Model):
poll = models.ForeignKey(Poll)
choice = models.CharField(maxlength=200)
votes = models.IntegerField()
def __str__(self):
return self.choice
it seems it does not work... and I do not have :
# Make sure our __str__() addition worked.
>>> Poll.objects.all()
[<Poll: What's up?>]
instead of it I have :
# objects.all() displays all the polls in the database.
>>> Poll.objects.all()
[<Poll: Poll object>]
Thanks for your support :)
Nicolas
Waylan Limberg
>
[snip]
>
> it seems it does not work... and I do not have :
>
> # Make sure our __str__() addition worked.
> >>> Poll.objects.all()
> [<Poll: What's up?>]
>
> instead of it I have :
>
> # objects.all() displays all the polls in the database.
> >>> Poll.objects.all()
> [<Poll: Poll object>]
>
I just checked the tutorial and you aren't expressly told that you
have to do so, although it is implied. I suppose this is because a
basic understanding of python is expected.
--
----
Waylan Limberg
way...@gmail.com
Nicolas Steinmetz
> Did you close your shell and restart it so that the changes can be imported?
No I did not.
As my (python) shell was open, I only did :
from mysite.polls.models import Poll, Choice
> I just checked the tutorial and you aren't expressly told that you
> have to do so, although it is implied. I suppose this is because a
> basic understanding of python is expected.
Unless you have just modified it, it is indeed :
"Let's jump back into the Python interactive shell by running python
manage.py shell again:"
Anyway, thanks for your support, I'll see all of this tomorrow ;-)
Have a nice week end,
Nicolas
Waylan Limberg
>
> > Did you close your shell and restart it so that the changes can be imported?
>
> No I did not.
>
> As my (python) shell was open, I only did :
>
> from mysite.polls.models import Poll, Choice
Once an object is imported, python will not import it again even if it
has been edited/changed. Therefore, you have to close the shell,
reopen it and only then can you import your changes.
<aside>
There is the reload() function, but that only works on modules and
were importing classes here. See
http://docs.python.org/lib/built-in-funcs.html and scroll down for
more info.
</aside>
>
> > I just checked the tutorial and you aren't expressly told that you
> > have to do so, although it is implied. I suppose this is because a
> > basic understanding of python is expected.
>
> Unless you have just modified it, it is indeed :
>
> "Let's jump back into the Python interactive shell by running python
> manage.py shell again:"
>
Maybe that should be tuned a little. How about:
"Let's restart the Python interactive shell by running python
manage.py shell again:"
--
----
Waylan Limberg
way...@gmail.com