configuration management for embedded devices supporting different firmwares:
- OpenWRT <http://openwrt.org>_
- OpenWISP Firmware <https://github.com/openwisp/OpenWISP-Firmware>_
- support for additional firmware can be added by specifying custom backends <#netjsonconfig-backends>_
configuration editor based on JSON-Schema editor <https://github.com/jdorn/json-editor>_
advanced edit mode: edit NetJSON_ DeviceConfiguration objects for maximum flexibility
configuration templates: reduce repetition to the minimum
configuration variables <#how-to-use-configuration-variables>_: reference ansible-like variables in the configuration and templates
template tags: tag templates to automate different types of auto-configurations (eg: mesh, WDS, 4G)
simple HTTP resources: allow devices to automatically download configuration updates
VPN management: easily create VPN servers and clients

Project goals

automate configuration management for embedded devices
allow to minimize repetition by using templates
provide base logic that can be extended by third-party apps (see Extending django-netjsonconfig <#extending-django-netjsonconfig>_)
provide ways to support more firmwares by adding custom backends
keep the core as simple as possible

Deploy it in production

An automated installer is available at ansible-openwisp2 <https://github.com/openwisp/ansible-openwisp2>_.

Dependencies

Python >=3.6
OpenSSL

Install stable version from pypi

Install from pypi:

.. code-block:: shell

pip install django-netjsonconfig

Install development version

Install tarball:

.. code-block:: shell

pip install https://github.com/openwisp/django-netjsonconfig/tarball/master

Alternatively you can install via pip using git:

.. code-block:: shell

pip install -e git+git://github.com/openwisp/django-netjsonconfig#egg=django-netjsonconfig

If you want to contribute, install your cloned fork:

.. code-block:: shell

git clone git@github.com:<your_fork>/django-netjsonconfig.git
cd django-netjsonconfig
python setup.py develop

Setup (integrate in an existing django project)

Add django_netjsonconfig, django.contrib.admin, sortedm2m and reversion to INSTALLED_APPS in the following order:

.. code-block:: python

INSTALLED_APPS = [
    # other apps
    'openwisp_utils.admin_theme',
    'django_netjsonconfig',
    # ensure the django admin comes after django-netjsonconfig
    'django.contrib.admin',
    'sortedm2m',
    'reversion'  # optional, can be removed if not needed
    # ...
]

Add the controller URLs to your main urls.py:

.. code-block:: python

urlpatterns = [
    # ... other urls in your project ...

    # controller URLs
    # used by devices to download/update their configuration
    # keep the namespace argument unchanged
    url(r'^', include('django_netjsonconfig.controller.urls', namespace='controller')),
    # common URLs
    # shared among django-netjsonconfig components
    # keep the namespace argument unchanged
    url(r'^', include('django_netjsonconfig.urls', namespace='netjsonconfig')),
]

Then run:

.. code-block:: shell

./manage.py migrate

Installing for development

Install sqlite:

.. code-block:: shell

sudo apt-get install sqlite3 libsqlite3-dev openssl libssl-dev

Install your forked repo:

.. code-block:: shell

git clone git://github.com/<your_fork>/django-netjsonconfig
cd django-netjsonconfig/
python setup.py develop

Install test requirements:

.. code-block:: shell

pip install -r requirements-test.txt

Create database:

.. code-block:: shell

cd tests/
./manage.py migrate
./manage.py createsuperuser

Launch development server:

.. code-block:: shell

./manage.py runserver

You can access the admin interface at http://127.0.0.1:8000/admin/.

Run tests with:

.. code-block:: shell

./runtests.py

How to use configuration variables

Sometimes the configuration is not exactly equal on all the devices, some parameters are unique to each device or need to be changed by the user.

In these cases it is possible to use configuration variables in conjunction with templates, this feature is also known as configuration context, think of it like a dictionary which is passed to the function which renders the configuration, so that it can fill variables according to the passed context.

The different ways in which variables are defined are described below.

Predefined device variables


Each device gets the following attributes passed as configuration variables:

* ``id``
* ``key``
* ``name``
* ``mac_address``

User defined device variables

In the device configuration section, you can access the context field by clicking on "Advanced Options (show)".

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/device-advanced.png :alt: advanced options (show)

Then you can define the variables as a key, value dictionary (JSON formatted) as shown below.

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/device-context.png :alt: context

Template default values


It's possible to specify the default values of variables defined in a template.

This allows to achieve 2 goals:

1. pass schema validation without errors (otherwise it would not be possible
   to save the template in the first place)
2. provide good default values that are valid in most cases but can be
   overridden in the device if needed

These default values will be overridden by the
`User defined device variables <#user-defined-device-variables>`_.

To do this, click on "Advanced Options (show)" in the edit template page:

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/template-advanced.png
   :alt: advanced options (show)

Then you can define the default values of the variables:

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/template-default-values.png
  :alt: default values

Global variables
~~~~~~~~~~~~~~~~

Variables can also be defined globally using the
`NETJSONCONFIG_CONTEXT <#netjsonconfig_context>`_ setting.

Example usage of variables

Here's a typical use case, the WiFi SSID and WiFi password. You don't want to define this for every device, but you may want to allow operators to easily change the SSID or WiFi password for a specific device without having to re-define the whole wifi interface to avoid duplicating information.

This would be the template:

.. code-block:: json

{
    "interfaces": [
        {
            "type": "wireless",
            "name": "wlan0",
            "wireless": {
                "mode": "access_point",
                "radio": "radio0",
                "ssid": "{{wlan0_ssid}}",
                "encryption": {
                    "protocol": "wpa2_personal",
                    "key": "{{wlan0_password}}",
                    "cipher": "auto"
                }
            }
        }
    ]
}

These would be the default values in the template:

.. code-block:: json

{
    "wlan0_ssid": "SnakeOil PublicWiFi",
    "wlan0_password": "Snakeoil_pwd!321654"
}

The default values can then be overridden at device level <#user-defined-device-variables>_ if needed, eg:

.. code-block:: json

{
    "wlan0_ssid": "Room 23 ACME Hotel",
    "wlan0_password": "room_23pwd!321654"
}

Signals

config_modified


**Path**: ``django_netjsonconfig.signals.config_modified``

**Arguments**:

- ``instance``: instance of ``Config`` which got its ``config`` modified

This signal is emitted every time the configuration of a device is modified.

It does not matter if ``Config.status`` is already modified, this signal will
be emitted anyway because it signals that the device configuration has changed.

It is not triggered when the device is created for the first time.

This signal is used to trigger the update of the configuration on devices,
when the push feature is enabled (requires Device credentials).

``config_status_changed``

Path: django_netjsonconfig.signals.config_status_changed

Arguments:

instance: instance of Config which got its status changed

This signal is emitted only when the configuration status of a device has changed.

checksum_requested


**Path**: ``django_netjsonconfig.signals.checksum_requested``

**Arguments**:

- ``instance``: instance of ``Device`` for which its configuration
  checksum has been requested
- ``request``: the HTTP request object

This signal is emitted when a device requests a checksum via the controller views.

The signal is emitted just before a successful response is returned,
it is not sent if the response was not successful.

``config_download_requested``

Path: django_netjsonconfig.signals.config_download_requested

Arguments:

instance: instance of Device for which its configuration has been requested for download
request: the HTTP request object

This signal is emitted when a device requests to download its configuration via the controller views.

The signal is emitted just before a successful response is returned, it is not sent if the response was not successful.

Settings

NETJSONCONFIG_BACKENDS


+--------------+-----------------------------------------------+
| **type**:    | ``tuple``                                     |
+--------------+-----------------------------------------------+
| **default**: | .. code-block:: python                        |
|              |                                               |
|              |   (                                           |
|              |     ('netjsonconfig.OpenWrt', 'OpenWRT'),     |
|              |     ('netjsonconfig.OpenWisp', 'OpenWISP'),   |
|              |   )                                           |
+--------------+-----------------------------------------------+

Available configuration backends. For more information, see `netjsonconfig backends
<http://netjsonconfig.openwisp.org/en/latest/general/basics.html#backend>`_.

``NETJSONCONFIG_VPN_BACKENDS``

+--------------+----------------------------------------------------------------+ | type: | tuple | +--------------+----------------------------------------------------------------+ | default: | .. code-block:: python | | | | | | ( | | | ('django_netjsonconfig.vpn_backends.OpenVpn', 'OpenVPN'), | | | ) | +--------------+----------------------------------------------------------------+

Available VPN backends for VPN Server objects. For more information, see OpenVPN netjsonconfig backend <http://netjsonconfig.openwisp.org/en/latest/backends/openvpn.html>_.

A VPN backend must follow some basic rules in order to be compatible with django-netjsonconfig:

it MUST allow at minimum and at maximum one VPN instance
the main NetJSON property MUST match the lowercase version of the class name, eg: when using the OpenVpn backend, the system will look into config['openvpn']
it SHOULD focus on the server capabilities of the VPN software being used

NETJSONCONFIG_DEFAULT_BACKEND


+--------------+----------------------------------+
| **type**:    | ``str``                          |
+--------------+----------------------------------+
| **default**: | ``NETJSONCONFIG_BACKENDS[0][0]`` |
+--------------+----------------------------------+

The preferred backend that will be used as initial value when adding new ``Config`` or
``Template`` objects in the admin.

This setting defaults to the raw value of the first item in the ``NETJSONCONFIG_BACKENDS`` setting,
which is ``netjsonconfig.OpenWrt``.

Setting it to ``None`` will force the user to choose explicitly.

``NETJSONCONFIG_DEFAULT_VPN_BACKEND``

+--------------+--------------------------------------+ | type: | str | +--------------+--------------------------------------+ | default: | NETJSONCONFIG_VPN_BACKENDS[0][0] | +--------------+--------------------------------------+

The preferred backend that will be used as initial value when adding new Vpn objects in the admin.

This setting defaults to the raw value of the first item in the NETJSONCONFIG_VPN_BACKENDS setting, which is django_netjsonconfig.vpn_backends.OpenVpn.

Setting it to None will force the user to choose explicitly.

NETJSONCONFIG_REGISTRATION_ENABLED


+--------------+-------------+
| **type**:    | ``bool``    |
+--------------+-------------+
| **default**: | ``True``    |
+--------------+-------------+

Whether devices can automatically register through the controller or not.

This feature is enabled by default.

Autoregistration must be supported on the devices in order to work, see `openwisp-config automatic
registration <https://github.com/openwisp/openwisp-config#automatic-registration>`_ for more information.

``NETJSONCONFIG_CONSISTENT_REGISTRATION``

+--------------+-------------+ | type: | bool | +--------------+-------------+ | default: | True | +--------------+-------------+

Whether devices that are already registered are recognized when reflashed or reset, hence keeping the existing configuration without creating a new one.

This feature is enabled by default.

Autoregistration must be enabled also on the devices in order to work, see openwisp-config consistent key generation <https://github.com/openwisp/openwisp-config#consistent-key-generation>_ for more information.

NETJSONCONFIG_REGISTRATION_SELF_CREATION


+--------------+-------------+
| **type**:    | ``bool``    |
+--------------+-------------+
| **default**: | ``True``    |
+--------------+-------------+

Whether devices that are not already present in the system are allowed to register or not.

Turn this off if you still want to use auto-registration to avoid having to
manually set the device UUID and key in its configuration file but also want
to avoid indiscriminate registration of new devices without explicit permission.

``NETJSONCONFIG_SHARED_SECRET``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+------------------+
| **type**:    | ``str``          |
+--------------+------------------+
| **default**: | ``""``           |
+--------------+------------------+

A secret key which must be used by devices to perform `automatic registration
<https://github.com/openwisp/openwisp-config#automatic-registration>`_.

This key MUST be explicitly set in production (if ``settings.DEBUG is False``), otherwise
an ``ImproperlyConfigured`` exception will be raised on startup.

``NETJSONCONFIG_CONTEXT``
~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+------------------+
| **type**:    | ``dict``         |
+--------------+------------------+
| **default**: | ``{}``           |
+--------------+------------------+

Additional context that is passed to the default context of each device object.

``NETJSONCONFIG_CONTEXT`` can be used to define system-wide configuration variables.

For technical information about how variables are handled in the lower levels
of OpenWISP, see `netjsonconfig context: configuration variables
<http://netjsonconfig.openwisp.org/en/latest/general/basics.html#context-configuration-variables>`_.

``NETJSONCONFIG_DEFAULT_AUTO_CERT``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+---------------------------+
| **type**:    | ``bool``                  |
+--------------+---------------------------+
| **default**: | ``True``                  |
+--------------+---------------------------+

The default value of the ``auto_cert`` field for new ``Template`` objects.

The ``auto_cert`` field is valid only for templates which have ``type``
set to ``VPN`` and indicates whether a new x509 certificate should be created
automatically for each configuration using that template.

The automatically created certificates will also be removed when they are not
needed anymore (eg: when the VPN template is removed from a configuration object).

``NETJSONCONFIG_CERT_PATH``
~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+---------------------------+
| **type**:    | ``str``                   |
+--------------+---------------------------+
| **default**: | ``/etc/x509``             |
+--------------+---------------------------+

The filesystem path where x509 certificate will be installed when
downloaded on routers when ``auto_cert`` is being used (enabled by default).

``NETJSONCONFIG_COMMON_NAME_FORMAT``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+------------------------------+
| **type**:    | ``str``                      |
+--------------+------------------------------+
| **default**: | ``{mac_address}-{name}``     |
+--------------+------------------------------+

Defines the format of the ``common_name`` attribute of VPN client certificates that are automatically
created when using VPN templates which have ``auto_cert`` set to ``True``.

``NETJSONCONFIG_MANAGEMENT_IP_DEVICE_LIST``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+------------------------------+
| **type**:    | ``bool``                     |
+--------------+------------------------------+
| **default**: | ``True``                     |
+--------------+------------------------------+

In the device list page, the column ``IP`` will show the ``management_ip`` if
available, defaulting to ``last_ip`` otherwise.

If this setting is set to ``False`` the ``management_ip`` won't be shown
in the device list page even if present, it will be shown only in the device
detail page.

You may set this to ``False`` if for some reason the majority of your user
doesn't care about the management ip address.

``NETJSONCONFIG_BACKEND_DEVICE_LIST``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+------------------------------+
| **type**:    | ``bool``                     |
+--------------+------------------------------+
| **default**: | ``True``                     |
+--------------+------------------------------+

In the device list page, the column ``backend`` and the backend filter are
shown by default.

If this setting is set to ``False`` these items will be removed from the UI.

You may set this to ``False`` if you are using only one configuration backend
and having this UI element doesn't add any value to your users.

``NETJSONCONFIG_HARDWARE_ID_ENABLED``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+-------------+
| **type**:    | ``bool``    |
+--------------+-------------+
| **default**: | ``False``   |
+--------------+-------------+

The field ``hardware_id`` can be used to store a unique hardware id, for example a serial number.

If this setting is set to ``True`` then this field will be shown first in the device list page
and in the add/edit device page.

This feature is disabled by default.

``NETJSONCONFIG_HARDWARE_ID_OPTIONS``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+--------------------------------------------------------+
| **type**:    | ``dict``                                               |
+--------------+--------------------------------------------------------+
| **default**: | .. code-block:: python                                 |
|              |                                                        |
|              |    {                                                   |
|              |        'blank': not NETJSONCONFIG_HARDWARE_ID_ENABLED, |
|              |        'null': True,                                   |
|              |        'max_length': 32,                               |
|              |        'unique': True,                                 |
|              |        'verbose_name': _('Serial number'),             |
|              |        'help_text': _('Serial number of this device')  |
|              |    }                                                   |
+--------------+--------------------------------------------------------+

Options for the model field ``hardware_id``.

* ``blank``: wether the field is allowed to be blank
* ``null``: wether an empty value will be stored as ``NULL`` in the database
* ``max_length``: maximum length of the field
* ``unique``: wether the value of the field must be unique
* ``verbose_name``: text for the human readable label of the field
* ``help_text``: help text to be displayed with the field

``NETJSONCONFIG_HARDWARE_ID_AS_NAME``
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+--------------+-------------+
| **type**:    | ``bool``    |
+--------------+-------------+
| **default**: | ``True``    |
+--------------+-------------+

When the hardware ID feature is enabled, devices will be referenced with
their hardware ID instead of their name.

If you still want to reference devices by their name, set this to ``False``.

Extending django-netjsonconfig
------------------------------

*django-netjsonconfig* provides a set of models, admin classes and generic views which can be imported,
extended and reused by third party apps.

To extend *django-netjsonconfig*, **you MUST NOT** add it to ``settings.INSTALLED_APPS``,
but you must create your own app (which goes into ``settings.INSTALLED_APPS``), import the
base classes from django-netjsonconfig and add your customizations.

In order to help django find the static files and templates of *django-netjsonconfig*,
you need to perform the steps described below.

1. Add ``EXTENDED_APPS``
~~~~~~~~~~~~~~~~~~~~~~~~

Add the following to your ``settings.py``:

.. code-block:: python

    EXTENDED_APPS = ('django_netjsonconfig', 'django_x509',)

2. Add ``openwisp_utils.staticfiles.DependencyFinder``

Add openwisp_utils.staticfiles.DependencyFinder to STATICFILES_FINDERS in your settings.py:

.. code-block:: python

STATICFILES_FINDERS = [
    'django.contrib.staticfiles.finders.FileSystemFinder',
    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
    'openwisp_utils.staticfiles.DependencyFinder',
]

3. Add openwisp_utils.loaders.DependencyLoader


Add ``openwisp_utils.loaders.DependencyLoader`` to ``TEMPLATES`` in your ``settings.py``:

.. code-block:: python

    TEMPLATES = [
        {
            'BACKEND': 'django.template.backends.django.DjangoTemplates',
            'OPTIONS': {
                'loaders': [
                    'django.template.loaders.filesystem.Loader',
                    'django.template.loaders.app_directories.Loader',
                    'openwisp_utils.loaders.DependencyLoader',
                ],
                'context_processors': [
                    'django.template.context_processors.debug',
                    'django.template.context_processors.request',
                    'django.contrib.auth.context_processors.auth',
                    'django.contrib.messages.context_processors.messages',
                ],
            },
        }
    ]

Extending models
~~~~~~~~~~~~~~~~

This example provides an example of how to extend the base models of
*django-netjsonconfig* by adding a relation to another django model named `Organization`.

.. code-block:: python

    # models.py of your custom ``config`` app
    from django.db import models
    from sortedm2m.fields import SortedManyToManyField
    from taggit.managers import TaggableManager

    from django_netjsonconfig.base.config import AbstractConfig, TemplatesVpnMixin
    from django_netjsonconfig.base.tag import AbstractTaggedTemplate, AbstractTemplateTag
    from django_netjsonconfig.base.template import AbstractTemplate
    from django_netjsonconfig.base.vpn import AbstractVpn, AbstractVpnClient

    # the model ``organizations.Organization`` is omitted for brevity
    # if you are curious to see a real implementation, check out django-organizations
    # https://github.com/bennylope/django-organizations

    class OrganizationMixin(models.Model):
        organization = models.ForeignKey('organizations.Organization')

        class Meta:
            abstract = True


    class Config(OrganizationMixin, TemplatesVpnMixin, AbstractConfig):
        templates = SortedManyToManyField('config.Template',
                                          related_name='config_relations',
                                          blank=True)
        vpn = models.ManyToManyField('config.Vpn',
                                     through='config.VpnClient',
                                     related_name='vpn_relations',
                                     blank=True)

        def clean(self):
            # your own validation logic here...
            pass

        class Meta(AbstractConfig.Meta):
            abstract = False


    class TemplateTag(AbstractTemplateTag):
        class Meta(AbstractTemplateTag.Meta):
            abstract = False


    class TaggedTemplate(AbstractTaggedTemplate):
        tag = models.ForeignKey('config.TemplateTag',
                                related_name='%(app_label)s_%(class)s_items',
                                on_delete=models.CASCADE)

        class Meta(AbstractTaggedTemplate.Meta):
            abstract = False


    class Template(OrganizationMixin, AbstractTemplate):
        tags = TaggableManager(through='config.TaggedTemplate', blank=True)
        vpn = models.ForeignKey('config.Vpn', blank=True, null=True)

        def clean(self):
            # your own validation logic here...
            pass

        class Meta(AbstractTemplate.Meta):
            abstract = False


    class Vpn(OrganizationMixin, AbstractVpn):
        class Meta(AbstractVpn.Meta):
            abstract = False


    class VpnClient(AbstractVpnClient):
        config = models.ForeignKey('config.Config', on_delete=models.CASCADE)
        vpn = models.ForeignKey('config.Vpn', on_delete=models.CASCADE)
        cert = models.OneToOneField('django_x509.Cert',
                                    on_delete=models.CASCADE,
                                    blank=True,
                                    null=True)

        class Meta(AbstractVpnClient.Meta):
            abstract = False

Extending the admin
~~~~~~~~~~~~~~~~~~~

Following the previous ``Organization`` example, you can avoid duplicating the admin
code by importing the base admin classes and registering your models with.

.. code-block:: python

    # admin.py of your app
    # these are your custom models, they must be imported before the abstract admin classes
    from .models import Config, Template, Vpn

    from django.contrib import admin
    from django_netjsonconfig.base.admin import (AbstractConfigAdmin,
                                                 AbstractConfigForm,
                                                 AbstractTemplateAdmin,
                                                 AbstractVpnAdmin,
                                                 AbstractVpnForm,
                                                 BaseForm)


    class ConfigForm(AbstractConfigForm):
        class Meta(AbstractConfigForm.Meta):
            model = Config


    class ConfigAdmin(AbstractConfigAdmin):
        form = ConfigForm


    class TemplateForm(BaseForm):
        class Meta(BaseForm.Meta):
            model = Template


    class TemplateAdmin(AbstractTemplateAdmin):
        form = TemplateForm


    class VpnForm(AbstractVpnForm):
        class Meta(AbstractVpnForm.Meta):
            model = Vpn


    class VpnAdmin(AbstractVpnAdmin):
        form = VpnForm


    admin.site.register(Config, ConfigAdmin)
    admin.site.register(Template, TemplateAdmin)
    admin.site.register(Vpn, VpnAdmin)

Extending controller views
~~~~~~~~~~~~~~~~~~~~~~~~~~

If your use case doesn't vary a lot from the base one, you may also want
to try to reuse the controller views:

.. code-block:: python

    # your_config_app.controller.views
    from ..models import Device, Vpn
    from django_netjsonconfig.controller.generics import (BaseDeviceChecksumView, BaseDeviceDownloadConfigView,
                                                          BaseDeviceRegisterView, BaseDeviceReportStatusView,
                                                          BaseVpnChecksumView, BaseVpnDownloadConfigView)

    class DeviceChecksumView(BaseDeviceChecksumView):
        model = Device


    class DeviceDownloadConfigView(BaseDeviceDownloadConfigView):
        model = Device


    class DeviceReportStatusView(BaseDeviceReportStatusView):
        model = Device


    class DeviceRegisterView(BaseDeviceRegisterView):
        model = Device


    class VpnChecksumView(BaseVpnChecksumView):
        model = Vpn


    class VpnDownloadConfigView(BaseVpnDownloadConfigView):
        model = Vpn


    device_checksum = DeviceChecksumView.as_view()
    device_download_config = DeviceDownloadConfigView.as_view()
    device_report_status = DeviceReportStatusView.as_view()
    device_register = DeviceRegisterView.as_view()
    vpn_checksum = VpnChecksumView.as_view()
    vpn_download_config = VpnDownloadConfigView.as_view()

Controller URLs
~~~~~~~~~~~~~~~

If you are not making drastic changes to the controller views, you can avoid duplicating the URL
logic by using the ``get_controller_urls`` function. Put this in your controller ``urls.py``:

.. code-block:: python

    # your_config_app.controller.urls
    from django_netjsonconfig.utils import get_controller_urls
    from . import views

    urlpatterns = get_controller_urls(views)

Extending AppConfig
~~~~~~~~~~~~~~~~~~~

You may want to reuse the ``AppConfig`` class of *django-netjsonconfig* too:

.. code-block:: python

    from django_netjsonconfig.apps import DjangoNetjsonconfigApp


    class MyOwnConfig(DjangoNetjsonconfigApp):
        name = 'yourapp.config'
        label = 'config'

        def __setmodels__(self):
            from .models import Config, VpnClient  # these are your custom models
            self.config_model = Config
            self.vpnclient_model = VpnClient

Real world extensions of django-netjsonconfig
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

For full working examples of django proejcts which extend *django-netjsonconfig*, see:

- `openwisp/openwisp-controller <https://github.com/openwisp/openwisp-controller>`_
- `innovationgarage/extendnetjson_project <https://github.com/innovationgarage/extendnetjson_project>`_

Screenshots
-----------

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/configuration-ui.png
   :alt: configuration item

------------

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/bridge.png
   :alt: bridge

------------

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/radio.png
   :alt: radio

------------

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/wpa-enterprise.png
  :alt: wpa enterprise

------------

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/preview.png
  :alt: preview

------------

.. image:: https://raw.githubusercontent.com/openwisp/django-netjsonconfig/master/docs/images/adhoc-interface.png
   :alt: adhoc interface

Contributing
------------

1. Announce your intentions in the `OpenWISP Mailing List <https://groups.google.com/d/forum/openwisp>`_
2. Fork this repo and install it
3. Follow `PEP8, Style Guide for Python Code`_
4. Write code
5. Write tests for your code
6. Ensure all tests pass
7. Ensure test coverage does not decrease
8. Document your changes
9. Send pull request

.. _PEP8, Style Guide for Python Code: http://www.python.org/dev/peps/pep-0008/
.. _NetJSON: http://netjson.org
.. _netjsonconfig: http://netjsonconfig.openwisp.org

Changelog
---------

See `CHANGES <https://github.com/openwisp/django-netjsonconfig/blob/master/CHANGES.rst>`_.

License
-------

See `LICENSE <https://github.com/openwisp/django-netjsonconfig/blob/master/LICENSE>`_.

Support
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See `OpenWISP Support Channels <http://openwisp.org/support.html>`_.

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