[Tutor] Possible bug in django models when assigning model attribute

[Glen Zangirolami]

I ran into something weird in Django and i'm completely stumped. I got it to
work but i'm trying to understand the logic behind it.
*I have the following data model:*

from django.db import models

class Setting(models.Model):
    name  = models.CharField(max_length=200)
    value = models.TextField()

    class Meta:
        db_table = "t_settings"

    def __unicode__(self):
        return self.name

*I have the following form model:*

from django import forms

class GlobalSettingsForm(forms.Form):
    # specify all the variables here
    site_name = forms.CharField(required=True,
                                max_length=200,
                                label="Site Name",
                                help_text="What you want your site to be
called company name, personal name, etc."
                                )

    site_tagline = forms.CharField(required=False,
                                   max_length=200,
                                   label="Site Tagline",
                                   help_text="A quick tag line on what your
site is about")

    site_url = forms.URLField(required=True,
                              label="Site URL",
                              max_length=200,
                              help_text="All links that reference your site
will use this url. I would not change this unless you are super sure." )



>From the shell I have the following code to create the form:

form = GlobalSettingsForm(data={'site_name':'test','site_url':'
http://localhost/','site_tagline':'test'})

Running a type on form i get: <class 't_settings.forms.GlobalSettingsForm'>
, perfect so far...

next I call form.is_valid() to get the cleaned_data attribute and all is
good.

form.cleaned_data returns {'site_name': u'test', 'site_tagline': u'test',
'site_url': u'http://localhost/'} as expected

now i want to change the information in the database so I loop through
cleaned_data, grab the object, and save:

for item in form.cleaned_data:
    *setting = Setting.objects.filter(name=item)*
    setting[0].value = form.cleaned_data[item]
    setting[0].save()

but it *does not work*. setting[0].value = form.cleaned_data[item] fails to
assign the data

if i run it like this it works:

for item in form.cleaned_data:
    *setting = Setting.objects.get(name__exact=item)*
    setting.value = form.cleaned_data[item]
    setting.save()

all i did was change the method used from filter to get, why does one work
and not the other??

if i create the objects individually and equate them they are the same:
setting = Setting.objects.get(name__exact=item)
setting2 = Setting.objects.filter(name=item)

setting2[0] == setting it equals True
type(setting2[0]) == setting it equals True

Also I am using, Django 1.1 with MySql Python...

Stumped.
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