Add a demo page for next_color

.gitignore

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+*.pyc
+*~
+*.egg-info/
+var/
+.coverage
+/bin/
+/lib/
+/include/
+/build/
+/local/
+/.tox/

chartjs/colors.py

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+# -*- coding: utf-8 -*-
+COLORS = [
+    (202, 201, 197),  # Light gray
+    (171, 9, 0),      # Red
+    (166, 78, 46),    # Light orange
+    (255, 190, 67),   # Yellow
+    (163, 191, 63),   # Light green
+    (122, 159, 191),  # Light blue
+    (140, 5, 84),     # Pink
+    (166, 133, 93),   # Light brown
+    (75, 64, 191),    # Red blue
+    (237, 124, 60),    # orange
+]
+
+
+def next_color(color_list=COLORS):
+    """Create a different color from a base color list.
+
+    >>> color_list = (
+    ...    (122, 159, 191),  # Light blue
+    ...    (202, 201, 197),  # Light gray,
+    ... )
+    >>> g = next_color(color_list)
+    >>> next(g)
+    [122, 159, 191]
+    >>> next(g)
+    [202, 201, 197]
+    >>> next(g)
+    [63, 100, 132]
+    >>> next(g)
+    [143, 142, 138]
+    >>> next(g)
+    [4, 41, 73]
+    >>> next(g)
+    [84, 83, 79]
+    """
+    step = 1
+    while True:
+        for color in color_list:
+            yield map(lambda base: (base + step) % 256, color)
+        step += 197

demo/README

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+############
+Demo project
+############
+
+The :file:`demo/` folder holds a demo project to illustrate django-chartjs
+usage.
+
+
+***********************
+Browse demo code online
+***********************
+
+See `demo folder in project's repository`_.
+
+
+***************
+Deploy the demo
+***************
+
+System requirements:
+
+* `Python`_ version 2.7 or 3.3, available as ``python`` command.
+
+  .. note::
+
+     You may use `virtualenv`_ to make sure the active ``python`` is the right
+     one.
+
+* ``make`` and ``wget`` to use the provided :file:`Makefile`.
+
+Execute:
+
+.. code-block:: sh
+
+   git clone [email protected]:novagile/django-chartjs.git
+   cd django-chartjs/
+   make demo
+
+It installs and runs the demo server on localhost, port 8000. So have a look
+at http://localhost:8000/
+
+.. note::
+
+   If you cannot execute the Makefile, read it and adapt the few commands it
+   contains to your needs.
+
+Browse and use :file:`demo/demoproject/` as a sandbox.
+
+
+**********
+References
+**********
+
+.. target-notes::
+
+.. _`demo folder in project's repository`:
+   https://github.com/novagile/django-chartjs/tree/master/demo/demoproject/
+
+.. _`Python`: http://python.org
+.. _`virtualenv`: http://virtualenv.org

demo/demoproject/manage.py

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+#!/usr/bin/env python
+import os
+import sys
+
+from django.core.management import execute_from_command_line
+
+def main():
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "%s.settings" % __package__)
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == "__main__":
+    main()

demo/demoproject/settings.py

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+"""Django settings for Django-DownloadView demo project."""
+from os.path import abspath, dirname, join
+
+
+# Configure some relative directories.
+demoproject_dir = dirname(abspath(__file__))
+demo_dir = dirname(demoproject_dir)
+root_dir = dirname(demo_dir)
+data_dir = join(root_dir, 'var')
+
+
+# Mandatory settings.
+ROOT_URLCONF = 'demoproject.urls'
+WSGI_APPLICATION = 'demoproject.wsgi.application'
+
+
+# Database.
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': join(data_dir, 'db.sqlite'),
+    }
+}
+
+
+# Required.
+SECRET_KEY = "This is a secret made public on project's repository."
+
+# Media and static files.
+MEDIA_ROOT = join(data_dir, 'media')
+MEDIA_URL = '/media/'
+STATIC_ROOT = join(data_dir, 'static')
+STATIC_URL = '/static/'
+
+
+# Applications.
+INSTALLED_APPS = (
+    # Standard Django applications.
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.sites',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'chartjs',
+    'demoproject',
+    # For test purposes. The demo project is part of django-downloadview
+    # test suite.
+    'django_nose',
+)
+
+TEMPLATE_CONTEXT_PROCESSORS = [
+    "django.contrib.auth.context_processors.auth",
+    "django.core.context_processors.debug",
+    "django.core.context_processors.i18n",
+    "django.core.context_processors.media",
+    "django.core.context_processors.static",
+    "django.core.context_processors.tz",
+    "django.contrib.messages.context_processors.messages",
+    "django.core.context_processors.request",
+]
+
+# Default middlewares. You may alter the list later.
+MIDDLEWARE_CLASSES = (
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+)
+
+LANGUAGE_CODE = 'fr'
+ugettext = lambda s: s
+LANGUAGES = (
+    ('fr', ugettext('French')),
+    ('en', ugettext('English')),
+    ('de', ugettext('German')),
+)
+
+# Development configuration.
+DEBUG = True
+TEMPLATE_DEBUG = DEBUG
+TEST_RUNNER = 'django_nose.NoseTestSuiteRunner'
+NOSE_ARGS = ['--verbose',
+             '--nocapture',
+             '--rednose',
+             '--with-id',  # allows --failed which only reruns failed tests
+             '--id-file=%s' % join(data_dir, 'test', 'noseids'),
+             '--with-doctest',
+             '--with-xunit',
+             '--xunit-file=%s' % join(data_dir, 'test', 'nosetests.xml'),
+             '--with-coverage',
+             '--cover-erase',
+             '--cover-package=demoproject,i18nurl',
+             '--no-path-adjustment',
+             '--all-modules',
+             ]

demo/demoproject/templates/colors.html

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+<html>
+	<head>
+        <title>django-chartjs colors demo</title>
+	</head>
+	<body>
+        <h1>Here is a list of colors generated for each dataset!</h1>
+
+        {% for color in colors %}
+        <div style="display: inline-block; width: 100px; height: 100px; background: rgb({{ color.0 }}, {{ color.1 }}, {{ color.2 }});"></div>
+        {% cycle '' '' '' '' '' '' '' '' '' '<hr style="clear: both;"/>' %}
+        {% endfor %}
+
+    </body>
+</html>

demo/demoproject/templates/home.html

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+{% load i18n i18nurl %}
+<html>
+	<head>
+        <title>django-i18nurl demo</title>
+	</head>
+	<body>
+        <h1>{% trans "Welcome to django-i18nurl demo!" %}</h1>
+        <p>{% trans "Here are some demo links. Browse the code to see how they are implemented" %}</p>
+
+		<h2>{% trans "Using current_i18nurl" %}</h2>
+		<ul>
+		  <li><a href="{% current_i18nurl 'fr' %}">Français</a></li>
+		  <li><a href="{% current_i18nurl 'en' %}">English</a></li>
+		  <li><a href="{% current_i18nurl 'de' %}">Deutsch</a></li>
+		</ul>
+
+		<h2>{% trans "Using i18nurl" %}</h2>
+		<ul>
+		  <li><a href="{% i18nurl 'home' 'fr' %}">Français</a></li>
+		  <li><a href="{% i18nurl 'home' 'en' %}">English</a></li>
+		  <li><a href="{% i18nurl 'home' 'de' %}">Deutsch</a></li>
+		</ul>
+    </body>
+</html>