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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