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drupal-download-0.0.9
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Download data from Drupal using Python
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | drupal-download-0.0.9 |
| نام | drupal-download |
| نسخه کتابخانه | 0.0.9 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Andre Bar'yudin |
| ایمیل نویسنده | andre.baryudin@gmail.com |
| آدرس صفحه اصلی | https://github.com/zelenij/python-drupal-download |
| آدرس اینترنتی | https://pypi.org/project/drupal-download/ |
| مجوز | MIT |
Python Drupal download module
=============================
This python 3 module will help you to extract data from a Drupal 7 or 8
web site. This data can be later used for archiving or for migration to
another CMS, such as Wagtail.
Motivation
----------
`Drupal <https://www.drupal.org/>`__ is an open source CMS, written in
PHP. It has a long history and many followers. A large number of web
sites run on Drupal and there is a substantial development community.
The product is extendable, there are plenty of useful modules available
to enhance functionality of Drupal web sites.
Over the years there has been a number of major releases of Drupal. At
the time of writing the most recent is Drupal 8. In the past migration
from one major version to another was done in-place. However, in order
to move from an earlier version to 8, the user must follow a process of
migration, involving creating a basic deployment of Drupal 8 first and
then using additional tools to copy the data from the old web site to
the new. While this should work in theory, the reality seems a bit
different.
I own a few very straightforward Drupal 7 web sites. They use a number
of modules from the standard repository, but no custom code. The vast
majority of the content are simple stories. Nonetheless, the migration
was rather ugly - a lot of content didn’t make it over. What did, looked
rather puny and definitely didn’t match the look and feel of my old web
sites. Blocks were missing. In short, the result needed a lot of extra
work to make it right.
I decided to revert to the old Drupal 7 deployment, which was,
admittedly, easy, thanks to the fact that the migration did involve a
fresh instance of Drupal. This was the short term fix. Given the effort
of migration, I decided to move all my web sites to
`Django <https://www.djangoproject.com/>`__ +
`Wagtail <https://wagtail.io/>`__, which would give me much more freedom
in managing my data and, hopefully, will prove a good long term
solution. To be fair, Drupal has lasted me more than 10 years, so it
wasn’t a bad journey overall. But I do hate to code in PHP, so getting
rid of it for good fills my heart with joy.
To achieve this move from Drupal to Django I need to extract the data
from the former in some readable format. Luckily, there are simple
export facilities built into the CMS. This Python package uses them in
order to download the data. There is a generic API to handle each
downloaded object, such as node, comment, vocabulary term etc, or to
simply dump everything as JSON into files. The task of shaping this
extracted data into something suitable for Django or any other target
you might have in mind is entirely yours.
Usage
-----
Python support
~~~~~~~~~~~~~~
Only Python 3 is supported at the moment. Let Python 2 die in quiet
dignity!
Drupal support
~~~~~~~~~~~~~~
Currently Drupal 7 and 8 are supported. In theory this module could work
with previous versions of Drupal and it might work with some future ones
as well. Your mileage can vary.
Installation
~~~~~~~~~~~~
This package is available on PyPi. Simply use pip to install (assuming
you are running in a Python 3 virtual environment):
::
pip install drupal_download
On a Drupal web site
~~~~~~~~~~~~~~~~~~~~
First, you must enable a JSON-based REST API in Drupal. Naturally, both 7 and 8 will have different ways to achieve
this (evil laughter!).
Make the relevant configuration changes and take node of the APIs endpoints. Make
sure you configure the desired authentication controls. At the moment,
the module supports these methods:
- Anonymous - no authentication is needed. This also means that anyone
can access you endpoint and download the data
- HTTP Basic - the standard basic authentication
- Session - cookie-driven authentication, the same in fact, that you
use when accessing a Drupal site interactively
**NB:** I very strongly recommend using HTTPS for all these
communications. If you don’t have an SSL certificate yet and can’t
afford one, get one for free from
`Letsencrypt <https://letsencrypt.org/>`__.
Drupal 7
~~~~~~~~
For Drupal 7 you should use the `Services <https://www.drupal.org/project/services>`__ module.
Drupal 8
~~~~~~~~
While the same services module has a version for Drupal 8, it doesn't work. It looks like a port job abandoned in the
middle. However, Drupal 8 includes a support for RESTful APIs in the core. Naturally, it works a bit differently from
the services module. In particular, services exposes an index view of, say, nodes. This view contains only the bare
bones information about each node. It also has a link to the view with the full details, which the module follows.
Drupal 8 RESTful API on the other hand can export all the fields in the main view. Read more about it
`here <https://www.drupal.org/docs/8/api/restful-web-services-api/restful-web-services-api-overview>`__. Note, that the
half cooked Drupal 8 services port causes the built in RESTful API to break somehow, if enabled. For faster downloads
you are advised to use larger page sizes in the view configuration.
In a script
~~~~~~~~~~~
You can use the API from this module directly, in this manner:
::
def data_callback(obj):
# process the data
dl = Drupal7DadaDownloader("https://www.example.com/export/node.json", "john", "123", AuthType.CookieSession, data_callback)
dl.load_data()
From the command line
~~~~~~~~~~~~~~~~~~~~~
Alternatively, there is a simple command line tool shipped with this
module. You can invoke it like this:
::
python3 -m download_drupal --help
This will display some help information. Calling it like this:
::
python3 -m download_drupal -b https://www.example.com/export/node.json --username jane --password secret --auth-type CookieSession -o example_node.json --drupal-version 7
will download all nodes from a Drupal 7 website.
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.6 | Python |
نحوه نصب
نصب پکیج whl drupal-download-0.0.9:
pip install drupal-download-0.0.9.whl
نصب پکیج tar.gz drupal-download-0.0.9:
pip install drupal-download-0.0.9.tar.gz