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django-neomodel-0.1.0
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Use Neo4j with Django!
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | django-neomodel-0.1.0 |
| نام | django-neomodel |
| نسخه کتابخانه | 0.1.0 |
| نگهدارنده | ['Cristina Escalante'] |
| ایمیل نگهدارنده | ['Athanasios Anastasiou <athanastasiou@gmail.com>, Marius Conjeaud <marius.conjeaud@outlook.com>'] |
| نویسنده | - |
| ایمیل نویسنده | Robin Edwards <robin.ge@gmail.com> |
| آدرس صفحه اصلی | - |
| آدرس اینترنتی | https://pypi.org/project/django-neomodel/ |
| مجوز | MIT |
Django Neomodel (beta!)
=======================
.. image:: https://raw.githubusercontent.com/robinedwards/neomodel/master/doc/source/_static/neomodel-300.png
:alt: neomodel
This module allows you to use the neo4j_ graph database with Django using neomodel_
.. _neo4j: https://www.neo4j.org
.. _neomodel: http://neomodel.readthedocs.org
Warnings
=======================
* Admin functionality is very experimental. `Please see todos / issues here <https://github.com/neo4j-contrib/django-neomodel/projects/1>`_
Live Examples (add yours here)
===============================
* `ResoTrack <https://resotrack.herokuapp.com/>`_
Getting started
===============
Install the module::
$ pip install django_neomodel
Add the following settings to your `settings.py`::
NEOMODEL_NEO4J_BOLT_URL = os.environ.get('NEO4J_BOLT_URL', 'bolt://neo4j:foobarbaz@localhost:7687')
# Make sure django_neomodel comes before your own apps
INSTALLED_APPS = (
# django.contrib.auth etc
'django_neomodel',
'yourapp'
)
Write your first node definition in `yourapp/models.py`::
from neomodel import StructuredNode, StringProperty, DateProperty
class Book(StructuredNode):
title = StringProperty(unique_index=True)
published = DateProperty()
Create any constraints or indexes for your labels. This needs to be done after you change your node definitions
much like `manage.py migrate`::
$ python manage.py install_labels
Now in a view `yourapp/views.py`::
from .models import Book
def get_books(request):
return render('yourapp/books.html', request, {'books': Book.nodes.all()})
In your `yourapp/admin.py`::
from django_neomodel import admin as neo_admin
from .models import Book
class BookAdmin(dj_admin.ModelAdmin):
list_display = ("title", "created")
neo_admin.register(Book, BookAdmin)
And you're ready to go. Don't forget to check the neomodel_ documentation.
Model forms
===========
Switch the base class from `StructuredNode` to `DjangoNode` and add a 'Meta' class::
from datetime import datetime
from django_neomodel import DjangoNode
from neomodel import StructuredNode, StringProperty, DateTimeProperty, UniqueIdProperty
class Book(DjangoNode):
uid = UniqueIdProperty()
title = StringProperty(unique_index=True)
status = StringProperty(choices=(
('Available', 'A'),
('On loan', 'L'),
('Damaged', 'D'),
), default='Available')
created = DateTimeProperty(default=datetime.utcnow)
class Meta:
app_label = 'library'
Create a model form class for your `DjangoNode`::
class BookForm(ModelForm):
class Meta:
model = Book
fields = ['title', 'status']
This class may now be used just like any other Django form.
Settings
========
The following config options are available in django settings (default values shown).
These are mapped to neomodel.config as django is started::
NEOMODEL_NEO4J_BOLT_URL = 'bolt://neo4j:neo4j@localhost:7687'
NEOMODEL_SIGNALS = True
NEOMODEL_FORCE_TIMEZONE = False
NEOMODEL_MAX_CONNECTION_POOL_SIZE = 50
Signals
=======
Signals work with `DjangoNode` sub-classes::
from django.db.models import signals
from django_neomodel import DjangoNode
from neomodel import StringProperty
class Book(DjangoNode):
title = StringProperty(unique_index=True)
def your_signal_func(sender, instance, signal, created):
pass
signals.post_save.connect(your_signal_func, sender=Book)
The following are supported: `pre_save`, `post_save`, `pre_delete`, `post_delete`.
On freshly created nodes `created=True` in the `post_save` signal argument.
Testing
=======
You can create a setup method which clears the database before executing each test::
from neomodel import db, clear_neo4j_database
class YourTestClass(DjangoTestCase):
def setUp(self):
clear_neo4j_database(db)
def test_something(self):
pass
Management Commands
===================
The following django management commands have been included.
install_labels
--------------
Setup constraints and indexes on labels for your node definitions. This should be executed after any schema changes::
$ python manage.py install_labels
Setting up labels and constraints...
Found tests.someapp.models.Book
+ Creating unique constraint for title on label Book for class tests.someapp.models.Book
Finished 1 class(es).
clear_neo4j
-----------
Delete all nodes in your database, warning there is no confirmation!
Requirements
============
- Python 3.7+
- neo4j 5.x, 4.4 (LTS)
.. image:: https://badges.gitter.im/Join%20Chat.svg
:alt: Join the chat at https://gitter.im/robinedwards/neomodel
:target: https://gitter.im/robinedwards/neomodel?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
Docker Example
===================
Using Docker Compose.
Commands to setup Docker Container docker-entrypoint.sh::
# Go to tests
$ cd tests/
# Docker Command (Make sure Docker is running and up to date)
$ docker-compose up
# login in admin with username=admin password=1234
Go to http://localhost:7474/browser/
Go to http://localhost:8000/admin/
Running Tests
===================
Setup Neo4j Desktop with a local database with password 'foobarbaz' and version 5.x or 4.4.x (Neo4j LTS version).
Commands to run tests::
# create local venv and install dependencies.
$ pip install -e '.[dev]'; export DJANGO_SETTINGS_MODULE=tests.settings;
$ tests/manage.py install_labels
$ tests/manage.py migrate
$ pytest
# example output:
platform darwin -- Python 3.9.0, pytest-6.1.2, py-1.9.0, pluggy-0.13.1
pick 0900469 Neo4J-update-t-4.1
collected 16 items
someapp/tests/test_atomicity.py . [ 6%]
someapp/tests/test_commands.py .. [ 18%]
someapp/tests/test_model_form.py ........... [ 87%]
someapp/tests/test_sanity.py . [ 93%]
someapp/tests/test_signals.py .
16 passed, 11 warnings in 1.62s
نیازمندی
| مقدار | نام |
|---|---|
| ~=5.0.0 | neomodel |
| ~=2.2 | django |
| >=7.1 | pytest |
| >=3.10.0 | pytest-django |
| >=4.0 | pytest-cov |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.7 | Python |
نحوه نصب
نصب پکیج whl django-neomodel-0.1.0:
pip install django-neomodel-0.1.0.whl
نصب پکیج tar.gz django-neomodel-0.1.0:
pip install django-neomodel-0.1.0.tar.gz