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@@ -4,177 +4,6 @@ This backend is currently in development and is not advised for Production workf | |
changes may be made without notice. We welcome your feedback as we continue to | ||
explore and build. The best way to share this is via our [MongoDB Community Forum](https://www.mongodb.com/community/forums/tag/python) | ||
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## Install and usage | ||
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The development version of this package supports Django 5.0.x. To install it: | ||
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`pip install git+https://github.com/mongodb-labs/django-mongodb-backend` | ||
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### Specifying the default primary key field | ||
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In your Django settings, you must specify that all models should use | ||
`ObjectIdAutoField`. | ||
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You can create a new project that's configured based on these steps using a | ||
project template: | ||
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```bash | ||
$ django-admin startproject mysite --template https://github.com/mongodb-labs/django-mongodb-project/archive/refs/heads/5.0.x.zip | ||
``` | ||
(where "5.0" matches the version of Django that you're using.) | ||
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This template includes the following line in `settings.py`: | ||
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```python | ||
DEFAULT_AUTO_FIELD = "django_mongodb_backend.fields.ObjectIdAutoField" | ||
``` | ||
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But this setting won't override any apps that have an `AppConfig` that | ||
specifies `default_auto_field`. For those apps, you'll need to create a custom | ||
`AppConfig`. | ||
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For example, the project template includes `<project_name>/apps.py`: | ||
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```python | ||
from django.contrib.admin.apps import AdminConfig | ||
from django.contrib.auth.apps import AuthConfig | ||
from django.contrib.contenttypes.apps import ContentTypesConfig | ||
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class MongoAdminConfig(AdminConfig): | ||
default_auto_field = "django_mongodb_backend.fields.ObjectIdAutoField" | ||
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class MongoAuthConfig(AuthConfig): | ||
default_auto_field = "django_mongodb_backend.fields.ObjectIdAutoField" | ||
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class MongoContentTypesConfig(ContentTypesConfig): | ||
default_auto_field = "django_mongodb_backend.fields.ObjectIdAutoField" | ||
``` | ||
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Each app reference in the `INSTALLED_APPS` setting must point to the | ||
corresponding ``AppConfig``. For example, instead of `'django.contrib.admin'`, | ||
the template uses `'<project_name>.apps.MongoAdminConfig'`. | ||
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### Configuring migrations | ||
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Because all models must use `ObjectIdAutoField`, each third-party and contrib app | ||
you use needs to have its own migrations specific to MongoDB. | ||
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For example, `settings.py` in the project template specifies: | ||
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```python | ||
MIGRATION_MODULES = { | ||
"admin": "mongo_migrations.admin", | ||
"auth": "mongo_migrations.auth", | ||
"contenttypes": "mongo_migrations.contenttypes", | ||
} | ||
``` | ||
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The project template includes these migrations, but you can generate them if | ||
you're setting things up manually or if you need to create migrations for | ||
third-party apps. For example: | ||
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```console | ||
$ python manage.py makemigrations admin auth contenttypes | ||
Migrations for 'admin': | ||
mongo_migrations/admin/0001_initial.py | ||
- Create model LogEntry | ||
... | ||
``` | ||
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### Creating Django applications | ||
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Whenever you run `python manage.py startapp`, you must remove the line: | ||
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`default_auto_field = 'django.db.models.BigAutoField'` | ||
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from the new application's `apps.py` file (or change it to reference | ||
`"django_mongodb_backend.fields.ObjectIdAutoField"`). | ||
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Alternatively, you can use the following `startapp` template which includes | ||
this change: | ||
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```bash | ||
$ python manage.py startapp myapp --template https://github.com/mongodb-labs/django-mongodb-app/archive/refs/heads/5.0.x.zip | ||
``` | ||
(where "5.0" matches the version of Django that you're using.) | ||
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### Configuring the `DATABASES` setting | ||
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After you've set up a project, configure Django's `DATABASES` setting similar | ||
to this: | ||
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```python | ||
DATABASES = { | ||
"default": { | ||
"ENGINE": "django_mongodb_backend", | ||
"HOST": "mongodb+srv://cluster0.example.mongodb.net", | ||
"NAME": "my_database", | ||
"USER": "my_user", | ||
"PASSWORD": "my_password", | ||
"PORT": 27017, | ||
"OPTIONS": { | ||
# Example: | ||
"retryWrites": "true", | ||
"w": "majority", | ||
"tls": "false", | ||
}, | ||
}, | ||
} | ||
``` | ||
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For a localhost configuration, you can omit `HOST` or specify | ||
`"HOST": "localhost"`. | ||
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`HOST` only needs a scheme prefix for SRV connections (`mongodb+srv://`). A | ||
`mongodb://` prefix is never required. | ||
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`OPTIONS` is an optional dictionary of parameters that will be passed to | ||
[`MongoClient`](https://pymongo.readthedocs.io/en/stable/api/pymongo/mongo_client.html). | ||
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`USER`, `PASSWORD`, and `PORT` (if 27017) may also be optional. | ||
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For a replica set or sharded cluster where you have multiple hosts, include | ||
all of them in `HOST`, e.g. | ||
`"mongodb://mongos0.example.com:27017,mongos1.example.com:27017"`. | ||
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Alternatively, if you prefer to simply paste in a MongoDB URI rather than parse | ||
it into the format above, you can use: | ||
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```python | ||
import django_mongodb_backend | ||
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MONGODB_URI = "mongodb+srv://my_user:[email protected]/myDatabase?retryWrites=true&w=majority&tls=false" | ||
DATABASES["default"] = django_mongodb_backend.parse_uri(MONGODB_URI) | ||
``` | ||
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This constructs a `DATABASES` setting equivalent to the first example. | ||
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#### `django_mongodb_backend.parse_uri(uri, conn_max_age=0, test=None)` | ||
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`parse_uri()` provides a few options to customize the resulting `DATABASES` | ||
setting, but for maximum flexibility, construct `DATABASES` manually as | ||
described above. | ||
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- Use `conn_max_age` to configure [persistent database connections]( | ||
https://docs.djangoproject.com/en/stable/ref/databases/#persistent-database-connections). | ||
- Use `test` to provide a dictionary of [settings for test databases]( | ||
https://docs.djangoproject.com/en/stable/ref/settings/#test). | ||
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Congratulations, your project is ready to go! | ||
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## Notes on Django QuerySets | ||
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* `QuerySet.explain()` supports the [`comment` and `verbosity` options]( | ||
https://www.mongodb.com/docs/manual/reference/command/explain/#command-fields). | ||
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Example: `QuerySet.explain(comment="...", verbosity="...")` | ||
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Valid values for `verbosity` are `"queryPlanner"` (default), | ||
`"executionStats"`, and `"allPlansExecution"`. | ||
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## Known issues and limitations | ||
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- The following `QuerySet` methods aren't supported: | ||
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- Due to the lack of ability to introspect MongoDB collection schema, | ||
`migrate --fake-initial` isn't supported. | ||
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## Troubleshooting | ||
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### Debug logging | ||
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To troubleshoot MongoDB connectivity issues, you can enable [PyMongo's logging]( | ||
https://pymongo.readthedocs.io/en/stable/examples/logging.html) using | ||
[Django's `LOGGING` setting](https://docs.djangoproject.com/en/stable/topics/logging/). | ||
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This is a minimal `LOGGING` setting that enables PyMongo's `DEBUG` logging: | ||
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```python | ||
LOGGING = { | ||
"version": 1, | ||
"disable_existing_loggers": False, | ||
"handlers": { | ||
"console": { | ||
"class": "logging.StreamHandler", | ||
}, | ||
}, | ||
"loggers": { | ||
"pymongo": { | ||
"handlers": ["console"], | ||
"level": "DEBUG", | ||
}, | ||
}, | ||
} | ||
``` |
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================= | ||
Table of contents | ||
================= | ||
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.. toctree:: | ||
:hidden: | ||
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index | ||
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.. toctree:: | ||
:maxdepth: 2 | ||
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intro/index | ||
topics/index | ||
faq | ||
ref/index | ||
internals | ||
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Indices and tables | ||
================== | ||
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* :ref:`genindex` | ||
* :ref:`modindex` |
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=== | ||
FAQ | ||
=== | ||
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This page contains a list of some frequently asked questions. | ||
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Troubleshooting | ||
=============== | ||
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Debug logging | ||
------------- | ||
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To troubleshoot MongoDB connectivity issues, you can enable :doc:`PyMongo's | ||
logging <pymongo:examples/logging>` using :doc:`Django's LOGGING setting | ||
<django:topics/logging>`. | ||
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This is a minimal :setting:`LOGGING` setting that enables PyMongo's ``DEBUG`` | ||
logging:: | ||
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LOGGING = { | ||
"version": 1, | ||
"disable_existing_loggers": False, | ||
"handlers": { | ||
"console": { | ||
"class": "logging.StreamHandler", | ||
}, | ||
}, | ||
"loggers": { | ||
"pymongo": { | ||
"handlers": ["console"], | ||
"level": "DEBUG", | ||
}, | ||
}, | ||
} |
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django-mongodb-backend 5.0.x documentation | ||
========================================== | ||
====================== | ||
Django MongoDB Backend | ||
====================== | ||
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.. toctree:: | ||
:maxdepth: 1 | ||
:caption: Contents: | ||
version 5.0.x for Django 5.0.x | ||
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fields | ||
querysets | ||
forms | ||
models | ||
embedded-models | ||
.. rubric:: Everything you need to know about Django MongoDB Backend. | ||
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Indices and tables | ||
================== | ||
First steps | ||
=========== | ||
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* :ref:`genindex` | ||
* :ref:`modindex` | ||
* :ref:`search` | ||
**Getting started:** | ||
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- :doc:`Installation <intro/install>` | ||
- :doc:`Configuration <intro/configure>` | ||
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Getting help | ||
============ | ||
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Having trouble? We’d like to help! | ||
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- Try the :doc:`faq` – it’s got answers to many common questions. | ||
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- Looking for specific information? Try the :ref:`genindex`, :ref:`modindex`, | ||
or the detailed :doc:`table of contents <contents>`. | ||
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- Report bugs and request features in our :ref:`issue tracker <issue-tracker>`. | ||
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Models | ||
====== | ||
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**Reference material:** | ||
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- :doc:`ref/models/fields` | ||
- :doc:`ref/models/querysets` | ||
- :doc:`ref/models/models` | ||
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**Topic guides:** | ||
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- :doc:`topics/embedded-models` | ||
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Forms | ||
===== | ||
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- :doc:`ref/forms` |
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================= | ||
Project internals | ||
================= | ||
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Documentation for people working on Django MongoDB Backend itself. This is the | ||
place to go if you'd like to help improve Django MongoDB Backend or learn about | ||
how the project is managed. | ||
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.. _issue-tracker: | ||
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Issue tracker | ||
============= | ||
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To report a bug or to request a new feature in Django MongoDB Backend, please | ||
open an issue in our issue tracker, JIRA: | ||
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1. Create a `JIRA account <https://jira.mongodb.org/>`_. | ||
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2. Navigate to the `Python Integrations project | ||
<https://jira.mongodb.org/projects/INTPYTHON/>`_. | ||
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3. Click **Create Issue**. Please provide as much information as possible about | ||
the issue and the steps to reproduce it. | ||
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Bug reports in JIRA for this project can be viewed by everyone. |
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