> Hi... I am using python2.5 with django 0.97 pre on windows xp.I am new
> to this and I have to use captcha... I can't find any source. Can
> anybody help? Thanking you all...
I used this:
http://svn.navi.cx/misc/trunk/pycaptcha/
I've defined my own, customized captcha in a k_captcha.py:
# --- k_captcha.py
# this class just slightly changes default captcha image ImageCaptcha,
You
# may use ImageCaptcha directly
from Captcha.Visual import Text, Backgrounds, Distortions,
ImageCaptcha
from Captcha import Words
import random
from django.conf import settings
dp = settings.CAPTCHA_DATA_PATH
# my own file with captcha words naped 'basic-polish' was used:
basic_polish_restricted = Words.WordList(dp+"basic-polish",
minLength=3, maxLength=8)
fontFactory = Text.FontFactory((16, 22), "vera")
class KGimpy(ImageCaptcha):
"""A relatively easy CAPTCHA that's somewhat easy on the eyes"""
defaultSize = (150,45)
def __init__(self, lcode, *args, **kwargs):
self.lcode = lcode
super(KGimpy, self).__init__(*args, **kwargs)
def getLayers(self):
if self.lcode == 'pl':
word = basic_polish_restricted.pick()
else:
word = Words.defaultWordList.pick()
self.addSolution(word)
return [
random.choice([
Backgrounds.CroppedImage(),
Backgrounds.TiledImage(),
]),
Text.TextLayer(word, borderSize=1,
fontFactory=fontFactory),
Distortions.SineWarp(),
]
# /---- k_captcha.py
# ---- views.py
# default implementation uses:
# from Captcha.Visual.Tests import PseudoGimpy
from k_captcha import KGimpy
from django.views.decorators.cache import cache_control
@cache_control(no_cache=True)
def show_captcha(request):
""" generate captcha image
"""
response = HttpResponse()
response['Content-Type'] = "image/png"
response['Cache-Control'] = "max-age=0"
response['Expires'] = "-1"
# default captcha image generator:
# g = PseudoGimpy()
lcode = request.LANGUAGE_CODE
g = KGimpy(lcode=lcode)
i = g.render()
i.save(response, "png")
safe_solutions = [str(hash(s)) for s in g.solutions]
#store in session
request.session['captcha'] = safe_solutions
return response
def check_captcha(data, request):
""" Verify captcha
"""
captcha_solutions = request.session['captcha']
if str(hash(data)) not in captcha_solutions:
return 0
return 1
# ---- /views.py
At your page you should have image with a link to show_captcha: <img
src="....../show_captcha" alt="captchaimg" />
After form submission you have to use 'check_captcha' to verify user
input.
There is also nice captcha solution at: http://recaptcha.net/
And search the web for 'django captcha' keywords
--
Maciej Wisniowski
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