Python-сообщество

# -*- coding: utf-8 -*-
from PIL import Image, ImageDraw, ImageFont
#импортируем наши настройки
from django.conf import settings
from climat.settings import * 
def captcha(request):
    # случайный генератор
    from random import choice
    #  sha для генератора хэша
    import sha, os
    # создаём 5 случайных знаков + секретный ключ 
    SALT = settings.SECRET_KEY[:20]
    imgtext = ''.join([choice('qwertyupasdfghjkzxcvbnm123456789') for i in range(5)])
    # наш хэш
    imghash = sha.new(SALT+imgtext).hexdigest()
    # открываем нашу картинку заднего фона средствами  PIL
    # settings.BACKGROUND_IMG_KAPTCHA в сетингах прописываем нашу картинку-бэграунд
    im=Image.open(settings.BACKGROUND_IMG_KAPTCHA)
    draw=ImageDraw.Draw(im)
    #в сеттингах прописываем путь к нашему шрифту для капчи
    font=ImageFont.truetype(settings.BACKGROUND_FONT_KAPTCHA, 57)
    #пишем на нашей картинке текст
    draw.text((10,5), imgtext, font=font, fill=(100,100,50))
    # для имени картинки исрользую ІР юзера
    temp =os.path.join(settings.PROJECT_DIR, "media/"+request.META['REMOTE_ADDR']+".jpg" )
    
    tempname = request.META['REMOTE_ADDR']+'.jpg'
    im.save(temp, format='JPEG')
    #возвращаем хэш катринки и название картинки
    arr = { 'imghash': imghash, 'tempname':tempname  }
    return arr

#ф-ция, где будет выводиться наша капча
def newses(request,offset):
    #наш темлейт
    template = 'newses.html'
    news = News.objects.get(id=int(offset))
    from climat.core.captcha import captcha
    captcha = captcha(request)
    if request.user.is_authenticated():
        user = request.user
    return render_to_response(template, { 'news':news, 'user':user, 'captcha':captcha })

#ф-ция, для аякса

def ajax_send_comments(request):
    res = {'success':False}
    if request.method == u'POST':
        POST = request.POST
        object_type = POST['object_type']
        object_id = POST['object_id']
        user_id = POST['user_id']
        comment = POST['comment']
        imghash = POST['imghash']
        imgtext = POST['imgtext']
        from django.contrib.comments.models import Comment
        import datetime, sha
        
        SALT = SECRET_KEY[:20]
        if imghash == sha.new(SALT+imgtext).hexdigest():
            c = Comment(
                        user_id = int(user_id),
                        comment = comment,
                        submit_date = datetime.date.today(),
                        ip_address = request.META.get("REMOTE_ADDR", None),
                        content_type_id = int(object_type),
                        object_pk = object_id,
                        site_id = 1
                        )
            c.save()
        res = { 'ip': request.META.get("REMOTE_ADDR", None), 'object_type':object_type, 'object_id':object_id, 'user_id':user_id, 'comment':comment, 'imgtext':imghash, 'sha':sha.new(SALT+imgtext).hexdigest()  }
        res = simplejson.dumps(res)
        
    return http.HttpResponse(res, mimetype='application/json')

{% extends "base.html" %}
{% block title %} Activation {% endblock %}
<script type="text/javascript" src="/media/js/jquery-1.3.2.min.js"></script>
{% block extra_scripts %}
<script type="text/javascript" src="/media/js/newses.js"></script>
<link href="/media/css/news.css" rel="stylesheet" type="text/css" media="screen" />
{% endblock %}
{% block content %}
	{% load multilingual_tags %}
	
	{{ news.title }}
	{% load comments %}
	{% get_comment_list for news as allcomments %}
	{% for acomment in allcomments %}
       <b> <div class="meta"><a href="{{ acomment.user_url }}">{{ acomment.user_name }}</a>: {{ acomment.comment }}</div></b>
       <input type="button" onclick="" value="com_com"  />
	<br/>
     <div class="form_comment" id="form_comment">
	      <input name="object_type" value="10" id="object_type" type="hidden">
	      <input name="object_id" value="{{news.id}}" id="object_id" type="hidden">
	      <input name="user_id" value="{{user.id}}" id="user_id" type="hidden">
	      <input type="hidden" value="{{ captcha.imghash }}" name="imghash" id="imghash" >
	      <p>
	        <label for="comment">Comment</label> 
	        <textarea id="comment" rows="10" cols="40" name="comment"></textarea>
	      </p>
	      <p>
	        	<input type="text" size="20" name="imgtext" id="imgtext"><br />
				<img src="/media/{{ captcha.tempname }}"><br />
	      </p>
		  <p class="submit">
		    <input name="post" class="submit-post" value="Post" type="button" onclick="send_comments()">
		  </p>
	</div>
    <input type="button" onclick="view_comments_panel()" value="com_news"  />   
    {% endfor %}
{% endblock %}

function view_comments_panel(  ){
	$('#form_comment').show();
}

function send_comments(){
	if($('#comment').val().length > 2){
		$.post("/ajax/send_comments/",
			{
				object_type : $('#object_type').val(),
				object_id : $('#object_id').val(),
				user_id : $('#user_id').val(),
				comment : $('#comment').val(),
				imghash : $('#imghash').val(),
				imgtext : $('#imgtext').val()
			},
			function(data){
				alert(data.imgtext+' r '+ data.sha);
			},'json'
		);
	}
}