Django: How to check if something is an email without a form

Question

I have HTML form to post in Django View and because of some constraints, it's easier for me to do the validation without the usual Django form classes.

My only reason to use Django Forms is Email Field(s) that are entered.

Is there any function to check if something is an email or I have to use the EmailField to check and validate it?

score 37 · Accepted Answer · answered Dec 21 '12 at 20:28

You can use the following

from django.core.validators import validate_email
from django import forms

...
if request.method == "POST":
    try:
        validate_email(request.POST.get("email", ""))
    except forms.ValidationError:
        ...

assuming you have a <input type="text" name="email" /> in your form

score 6 · Answer 2 · answered Dec 21 '12 at 20:29

You can use the validate_email() method from django.core.validators:

>>> from django.core import validators
>>> validators.validate_email('test@example.com')
>>> validators.validate_email('test@examplecom')
Traceback (most recent call last):
   File "<console>", line 1, in <module>
   File "/Users/jasper/Sites/iaid/env/lib/python2.7/site-    packages/django/core/validators.py", line 155, in __call__
    super(EmailValidator, self).__call__(u'@'.join(parts))
  File "/Users/jasper/Sites/iaid/env/lib/python2.7/site-packages/django/core/validators.py", line 44, in __call__
    raise ValidationError(self.message, code=self.code)
ValidationError: [u'Enter a valid e-mail address.']

If someone wants to customise the error message, it can be done with writing `validators.validate_email.message = 'My custom Error message'` — Jay Modi, Dec 15 '17 at 14:14
EmailValidator(message='My custom Error message')('test@examplecom') — user2858738, Nov 03 '20 at 12:36

score 0 · Answer 3 · answered Nov 28 '22 at 14:30

import re

Using Python

def check_email(email) -> bool:
    # The regular expression
    pat = r'\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b'
    if re.match(pat, email):
        return True
    else:
        return False

Using regular expression to validate the email

Using Django but this raise a validation error

from django.core import validators
validators.validate_email("test@gmail.com")

Django: How to check if something is an email without a form

3 Answers3

Using Python

Using Django but this raise a validation error