I was about to start an online community but every time you allow people to post something as a comment you never know what they come up to, especially regarding profanities.
So I come up with this idea, I put together some code from the old style form validators and the new newform style, plus some code to sanitize HTML from snippet number 169, and the final result is a CharField that only accept values without swear words, profanities, curses and bad html.
Cheers.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | from django import newforms as forms
from django.conf import settings
from django.newforms.fields import EMPTY_VALUES
from django.utils.translation import ugettext as _, ungettext
from utils.BeautifulSoup import BeautifulSoup, Comment
class CleanCharField(forms.CharField):
valid_tags= settings.VALID_TAGS.split()
valid_attrs= settings.VALID_ATTRS.split()
def clean(self, value):
"""
Checks that the given string has no profanities in it. This does a simple
check for whether each profanity exists within the string, so 'fuck' will
catch 'motherfucker' as well. Raises a ValidationError such as:
Watch your mouth! The words "f--k" and "s--t" are not allowed here.
"""
value= value.lower() # normalize
words_seen= [w for w in settings.PROFANITIES_LIST if w in value]
if words_seen:
from django.utils.text import get_text_list
plural= len(words_seen)
raise forms.ValidationError, ungettext("Watch your mouth! The word %s is not allowed here.",
"Watch your mouth! The words %s are not allowed here.", plural) % \
get_text_list(['"%s%s%s"' % (i[0], '-'*(len(i)-2), i[-1]) for i in words_seen], _('and'))
"""
Cleans non-allowed HTML from the input
"""
value= super(CleanCharField, self).clean(value)
soup= BeautifulSoup(value)
for comment in soup.findAll(text=lambda text: isinstance(text, Comment)):
comment.extract()
for tag in soup.findAll(True):
if tag.name not in self.valid_tags:
tag.hidden= True
tag.attrs= [(attr, val) for attr, val in tag.attrs if attr in self.valid_attrs]
return soup.renderContents().decode('utf8')
settings.py:
PROFANITIES_LIST = ('asshat', 'asshead', 'asshole', 'cunt', 'fuck', 'gook', 'nigger', 'shit',)
VALID_TAGS= 'p i strong b u a h1 h2 h3 pre br img'
VALID_ATTRS= 'href src'
|
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