/TypeScript/Check if username exists in database django

Check if username exists in database django

class FormClass:
	username = ...
	def clean(self):
		super(FormClass, self).clean()
    	username = self.cleaned_data['username']
    	if User.objects.exclude(pk=self.instance.pk).filter(username=username).exists():
        	raise forms.ValidationError(f'Username "{username}" is already in use.')
    	return username

Source: stackoverflow.com

Similar codes

0 vote295 views1 answer
Sort function in typescript
TypeScript
0 vote302 views1 answer
"Which of the following is the best description of the interior structure of a highly evolved high-mass star late in its lifetime but before the collapse of its iron core?"
TypeScript
1 vote282 views1 answer
How to make an element be above all the other elements html
TypeScript
1 vote307 views1 answer
Advantages of automation
TypeScript
0 vote280 views1 answer
Peer of typescript@>=2.8.0
TypeScript
1 vote333 views1 answer
Python get elements from list of dictionaries
TypeScript
0 vote345 views1 answer
Publication only contains dependencies and/or constraints without a version. You need to add minimal version information, publish resolved versions
TypeScript
1 vote292 views1 answer
Css selector starts with
TypeScript
0 vote301 views1 answer
Javax.validation.constraints does not exist
TypeScript
0 vote310 views1 answer
React inherit html input props
TypeScript