CODEWITHSUNDEEP
pythonregexdjangovalidationdjango-forms
BrianCas
BrianCas

Reputation: 789

Django - RegexValidator using special expressions

How do I implement special expressions in RegexValidator?

forms.py:

class MyRegistrationForm(forms.ModelForm):
    alphanumeric = RegexValidator('^[A-Za-z]+$', 'Only alphabetic')
    first_name = forms.CharField(max_length = 20, validators=[alphanumeric])
    last_name = forms.CharField(max_length = 20, validators=[alphanumeric])

I would like to use: áàäéèëíìïóòöúùüñÁÀÄÉÈËÍÌÏÓÒÖÚÙÜÑ as well but I get a "Non-ASCII character" error. Is there any other way to use it?

Upvotes: 2

Views: 1968

Answers (1)

Selcuk
Selcuk

Reputation: 59219

You can use the \w specifier, but since RegexValidator does not enable the re.UNICODE flag, you might need something like this:

import re
class MyRegistrationForm(forms.ModelForm):
    re_alphanumeric = re.compile('^\w+$', re.UNICODE)
    alphanumeric = RegexValidator(re_alphanumeric, 'Only alphabetic')
    ...

Update: If you want to exclude numeric characters, use

import re
class MyRegistrationForm(forms.ModelForm):
    re_alpha = re.compile('[^\W\d_]+$', re.UNICODE)
    alpha = RegexValidator(re_alpha, 'Only alphabetic')
    ...

Upvotes: 4

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