Windows: How to check the original install date

This was a bit of a doozey for me, but very simple to find out.

Go to a command prompt window and type "systeminfo"

This will spit out a whole heap of info. The "Original Install Date" line is what you're after, somewhere near the top.

If you've got a lot of patches installed, it'll flood that line off the screen.

To prevent that, save the output to a file instead.

Type "systeminfo > output.txt". When it's done, open up the file.

Almost as easy as bringing dead squids back to life with soy sauce

Sources

• Windows XP Installation date
• How do I enable scrolling in Windows command prompt?

Django: Display a field specific error in your Form/ModelForm

Django forms are incredibly flexible, but they're also a little cumbersome when it comes to errors.

The following example shows you that you can display an error for:

• a specific field
• a specific field from another field
• the form as a whole

class EventForm(forms.ModelForm):
class Meta:
model = Event

title = forms.CharField(required = True)
lawyer = forms.CharField(required = True)
when = forms.CharField(max_length = 10, min_length = 10, widget = DateInput(format="%d-%m-%Y"))

def clean_when(self):
value = self.cleaned_data.get(field_name)

if value:
try:
value = datetime.datetime.strptime(value, '%d-%m-%Y')
except ValueError:
value = None
# Displays an error under the title field, even though it's validating as the "when" field.
self._errors['title'] = ['Invalid date given.']

return value


def clean_lawyer(self):
# Display error for the lawyer field
raise forms.ValidationError("OBJECTION!")


def clean(self):
data = super(EventForm, self).clean()

# In the clean() even, errors raised will display as an error for the form (non field error)
raise forms.ValidationError('Just for the hell of it.')

return data

Raising an error is the preferred way of doing things, but if you need to do multi-line errors then it's possible to use the self._errors method.

How many errors can you see here?