First implementation.

Author: pythonpro

chat/__init__.py

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+from mongoengine import Document, fields
+from mongoengine.django.auth import User
+import datetime
+
+
+class Message(Document):
+    author = fields.ReferenceField(User, required=True)
+    addressee = fields.ReferenceField(User, required=True)
+    text = fields.StringField(required=True, max_length=40)
+    created = fields.DateTimeField(required=True,
+                                   default=datetime.datetime.now)
+    read = fields.BooleanField(required=True, default=False)

chat/documents.py

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+from mongodbforms import DocumentForm
+from documents import Message
+
+
+class MessageForm(DocumentForm):
+    class Meta:
+        document = Message
+        fields = ("text",)

chat/forms.py

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+# Django settings for chat project.
+from mongoengine import connect
+
+DEBUG = True
+TEMPLATE_DEBUG = DEBUG
+
+ADMINS = (
+    # ('Your Name', '[email protected]'),
+)
+
+MANAGERS = ADMINS
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.dummy', # Add 'postgresql_psycopg2', 'mysql', 'sqlite3' or 'oracle'.
+        'NAME': '',                      # Or path to database file if using sqlite3.
+        # The following settings are not used with sqlite3:
+        'USER': '',
+        'PASSWORD': '',
+        'HOST': '',                      # Empty for localhost through domain sockets or '127.0.0.1' for localhost through TCP.
+        'PORT': '',                      # Set to empty string for default.
+    }
+}
+
+# Hosts/domain names that are valid for this site; required if DEBUG is False
+# See https://docs.djangoproject.com/en/1.5/ref/settings/#allowed-hosts
+ALLOWED_HOSTS = []
+
+# Local time zone for this installation. Choices can be found here:
+# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
+# although not all choices may be available on all operating systems.
+# In a Windows environment this must be set to your system time zone.
+TIME_ZONE = 'America/Chicago'
+
+# Language code for this installation. All choices can be found here:
+# http://www.i18nguy.com/unicode/language-identifiers.html
+LANGUAGE_CODE = 'en-us'
+
+SITE_ID = 1
+
+# If you set this to False, Django will make some optimizations so as not
+# to load the internationalization machinery.
+USE_I18N = True
+
+# If you set this to False, Django will not format dates, numbers and
+# calendars according to the current locale.
+USE_L10N = True
+
+# If you set this to False, Django will not use timezone-aware datetimes.
+USE_TZ = True
+
+# Absolute filesystem path to the directory that will hold user-uploaded files.
+# Example: "/var/www/example.com/media/"
+MEDIA_ROOT = ''
+
+# URL that handles the media served from MEDIA_ROOT. Make sure to use a
+# trailing slash.
+# Examples: "http://example.com/media/", "http://media.example.com/"
+MEDIA_URL = ''
+
+# Absolute path to the directory static files should be collected to.
+# Don't put anything in this directory yourself; store your static files
+# in apps' "static/" subdirectories and in STATICFILES_DIRS.
+# Example: "/var/www/example.com/static/"
+STATIC_ROOT = ''
+
+# URL prefix for static files.
+# Example: "http://example.com/static/", "http://static.example.com/"
+STATIC_URL = '/static/'
+
+# Additional locations of static files
+STATICFILES_DIRS = (
+    # Put strings here, like "/home/html/static" or "C:/www/django/static".
+    # Always use forward slashes, even on Windows.
+    # Don't forget to use absolute paths, not relative paths.
+)
+
+# List of finder classes that know how to find static files in
+# various locations.
+STATICFILES_FINDERS = (
+    'django.contrib.staticfiles.finders.FileSystemFinder',
+    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
+#    'django.contrib.staticfiles.finders.DefaultStorageFinder',
+)
+
+# Make this unique, and don't share it with anybody.
+SECRET_KEY = '%h886c4&)vsb0l)g^2mv+a3@q8_ww8-i110u$v2kontw61kxl)'
+
+# List of callables that know how to import templates from various sources.
+TEMPLATE_LOADERS = (
+    'django.template.loaders.filesystem.Loader',
+    'django.template.loaders.app_directories.Loader',
+#     'django.template.loaders.eggs.Loader',
+)
+
+MIDDLEWARE_CLASSES = (
+    'django.middleware.common.CommonMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    # Uncomment the next line for simple clickjacking protection:
+    # 'django.middleware.clickjacking.XFrameOptionsMiddleware',
+)
+
+ROOT_URLCONF = 'chat.urls'
+
+# Python dotted path to the WSGI application used by Django's runserver.
+WSGI_APPLICATION = 'chat.wsgi.application'
+
+TEMPLATE_DIRS = (
+    # Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
+    # Always use forward slashes, even on Windows.
+    # Don't forget to use absolute paths, not relative paths.
+    '/Users/tier/Job/Maxim/projects/chat/chat/templates',
+)
+
+INSTALLED_APPS = (
+    'django.contrib.auth',
+    'mongoengine.django.mongo_auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    # 'django.contrib.sites',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    # Uncomment the next line to enable the admin:
+    # 'django.contrib.admin',
+    # Uncomment the next line to enable admin documentation:
+    # 'django.contrib.admindocs',
+    'registration',
+)
+
+# A sample logging configuration. The only tangible logging
+# performed by this configuration is to send an email to
+# the site admins on every HTTP 500 error when DEBUG=False.
+# See http://docs.djangoproject.com/en/dev/topics/logging for
+# more details on how to customize your logging configuration.
+LOGGING = {
+    'version': 1,
+    'disable_existing_loggers': False,
+    'filters': {
+        'require_debug_false': {
+            '()': 'django.utils.log.RequireDebugFalse'
+        }
+    },
+    'handlers': {
+        'mail_admins': {
+            'level': 'ERROR',
+            'filters': ['require_debug_false'],
+            'class': 'django.utils.log.AdminEmailHandler'
+        }
+    },
+    'loggers': {
+        'django.request': {
+            'handlers': ['mail_admins'],
+            'level': 'ERROR',
+            'propagate': True,
+        },
+    }
+}
+
+# Email settings.
+EMAIL_HOST = 'smtp.gmail.com'
+EMAIL_PORT = 587
+EMAIL_HOST_PASSWORD = 'xxxxxxxx'
+EMAIL_HOST_USER = '[email protected]'
+EMAIL_USE_TLS = True
+
+# Django-registration settings.
+ACCOUNT_ACTIVATION_DAYS = 3
+SITE = {'name': 'Cool Site', 'domain': 'www.coolsite.ru'}
+LOGIN_REDIRECT_URL = "index"
+
+# Mongo settings.
+connect('chat', host='192.168.1.5')
+AUTHENTICATION_BACKENDS = (
+    'mongoengine.django.auth.MongoEngineBackend',
+)
+AUTH_USER_MODEL = 'mongo_auth.MongoUser'
+MONGOENGINE_USER_DOCUMENT = 'mongoengine.django.auth.User'
+SESSION_ENGINE = 'mongoengine.django.sessions'

chat/settings.py

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+{% load i18n %}
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+
+<head>
+    <link rel="stylesheet" href="/style.css" />
+    <title>{% block title %}User test{% endblock %}</title>
+</head>
+
+<body>
+    <div id="header">
+        {% block header %}
+	<a href="{% url 'index' %}">{% trans "Home" %}</a> | 
+
+	{% if user.is_authenticated %}
+	{% trans "Logged in" %}: {{ user.username }} 
+	(<a href="{% url 'auth_logout' %}">{% trans "Log out" %}</a> | 
+	<a href="{% url 'auth_password_change' %}">{% trans "Change password" %}</a>)
+	{% else %}
+	<a href="{% url 'auth_login' %}">{% trans "Log in" %}</a>
+	{% endif %}
+	<hr />
+        {% endblock %}
+    </div>
+
+    <div id="content">
+        {% block content %}{% endblock %}
+    </div>
+
+    <div id="footer">
+        {% block footer %}
+        <hr />
+        {% endblock %}
+    </div>
+</body>
+
+</html>

chat/templates/base.html

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+{% extends "base.html" %}
+{% load i18n %}
+
+{% block content %}
+    <h2>Chat with {{ addressee.username }}:</h2>
+    {% for m in all_messages %}
+        {% ifequal m.author user %}
+        <p style="background: lightgrey"><b>{{ m.author.username }}: </b>{{ m.text }}</p>
+        {% else %}
+        <p style="background: lightblue"><b>{{ m.author.username }}: </b>{{ m.text }}</p>
+        {% endifequal %}
+    {% endfor %}
+    <h2>Reply:</h2>
+    <form action="" method="post">
+    {% csrf_token %}
+    {{ form.as_p }}
+    <p><input type="submit" value="Send" /></p>
+    </form>
+{% endblock %}

chat/templates/chat.html

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+{% extends "base.html" %}
+{% load i18n %}
+
+{% block content %}
+{% if user.is_authenticated %}
+    <h2>All users:</h2>
+    <ul>
+    {% for u in udata %}
+        <li><a href="{% url 'chat' u.0 %}">{{ u.0 }} ({{ u.1 }}/<b>{{ u.2 }})</b></a></li>
+    {% endfor %}
+    </ul>
+{% else %}
+    Please log in to start the chat.
+{% endif %}
+{% endblock %}

chat/templates/index.html

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+{% extends "base.html" %}
+{% load i18n %}
+
+{% block content %}
+
+{% if account %}
+
+<p>{% trans "Account successfully activated" %}</p>
+
+<p><a href="{% url 'auth_login' %}">{% trans "Log in" %}</a></p>
+
+{% else %}
+
+<p>{% trans "Account activation failed" %}</p>
+
+{% endif %}
+
+{% endblock %}

chat/templates/registration/activate.html

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+{% extends "base.html" %}
+{% load i18n %}
+
+{% block content %}
+<p>{% trans "Your account is now activated." %}</p>
+{% endblock %}

chat/templates/registration/activation_complete.html

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+{% load i18n %}
+{% trans "Activate account at" %} {{ site.name }}:
+
+http://{{ site.domain }}{% url 'registration_activate' activation_key %}
+
+{% blocktrans %}Link is valid for {{ expiration_days }} days.{% endblocktrans %}