Reusable django-app for storing GIS and indoor coordinates of objects.
Table of Contents:
- Python >= 3.8
- GeoDjango (see GeoDjango Install Instructions)
- One of the databases supported by GeoDjango
| django-loci | Python version |
| 0.2 | 2.7 or >=3.4 |
| 0.3 - 0.4 | >=3.6 |
| 1.0 | >=3.7 |
| dev | >=3.8 |
Install from pypi:
pip install django-lociFirst of all, install the dependencies of GeoDjango:
- Geospatial libraries
- Spatial database, for development we use Spatialite, a spatial extension of sqlite
Install tarball:
pip install https://github.com/openwisp/django-loci/tarball/masterAlternatively you can install via pip using git:
pip install -e git+git://github.com/openwisp/django-loci#egg=django_lociIf you want to contribute, install your cloned fork:
git clone [email protected]:<your_fork>/django-loci.git
cd django_loci
python setup.py developFirst of all, set up your database engine to one of the spatial databases suppported by GeoDjango.
Add django_loci and its dependencies to INSTALLED_APPS in the following order:
INSTALLED_APPS = [
# ...
'django.contrib.gis',
'django_loci',
'django.contrib.admin',
'leaflet',
'channels'
# ...
]Configure CHANNEL_LAYERS according to your needs, a sample configuration can be:
ASGI_APPLICATION = "django_loci.channels.asgi.channel_routing"
CHANNEL_LAYERS = {
"default": {
"BACKEND": "channels.layers.InMemoryChannelLayer",
},
}Now run migrations:
./manage.py migrateCommon issues and solutions when installing GeoDjango.
If you get the following exception:
django.core.exceptions.ImproperlyConfigured: Unable to load the SpatiaLite library extension
You need to specify the SPATIALITE_LIBRARY_PATH in your settings.py as explained
in the django documentation regarding how to install and configure spatialte.
Please refer to the geodjango documentation on troubleshooting issues related to geospatial libraries.
| type: | str |
| default: | django_loci.storage.OverwriteStorage |
The django file storage class used for uploading floorplan images.
The filestorage can be changed to a different one as long as it has an
upload_to class method which will be passed to FloorPlan.image.upload_to.
To understand the details of this statement, take a look at the code of django_loci.storage.OverwriteStorage.
| type: | str |
| default: | ArcGIS |
Service used for geocoding and reverse geocoding.
Supported geolocation services:
ArcGISNominatimGoogleV3(Google Maps v3)
| type: | int |
| default: | 1 |
Amount of seconds between geocoding retry API calls when geocoding requests fail.
| type: | int |
| default: | 3 |
Amount of retry API calls when geocoding requests fail.
| type: | str |
| default: | None |
API key if required (eg: Google Maps).
Use to check if geocoding is working as expected or not.
Run this checks with:
./manage.py check --deploy --tag geocoding
django-loci provides a set of models and admin classes which can be imported, extended and reused by third party apps.
To extend django-loci, 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 of django-loci and add your customizations.
This example provides an example of how to extend the base models of django-loci by adding a relation to another django model named Organization.
# models.py of your app
from django.db import models
from django_loci.base.models import (AbstractFloorPlan,
AbstractLocation,
AbstractObjectLocation)
# the model ``organizations.Organization`` is omitted for brevity
# if you are curious to see a real implementation, check out django-organizations
class OrganizationMixin(models.Model):
organization = models.ForeignKey('organizations.Organization')
class Meta:
abstract = True
class Location(OrganizationMixin, AbstractLocation):
class Meta(AbstractLocation.Meta):
abstract = False
def clean(self):
# your own validation logic here...
pass
class FloorPlan(OrganizationMixin, AbstractFloorPlan):
location = models.ForeignKey(Location)
class Meta(AbstractFloorPlan.Meta):
abstract = False
def clean(self):
# your own validation logic here...
pass
class ObjectLocation(OrganizationMixin, AbstractObjectLocation):
location = models.ForeignKey(Location, models.PROTECT,
blank=True, null=True)
floorplan = models.ForeignKey(FloorPlan, models.PROTECT,
blank=True, null=True)
class Meta(AbstractObjectLocation.Meta):
abstract = False
def clean(self):
# your own validation logic here...
passFollowing the previous Organization example, you can avoid duplicating the admin code by importing the base admin classes and registering your models with them.
But first you have to change a few settings in your settings.py, these are needed in
order to load the admin templates and static files of django-loci even if it's not
listed in settings.INSTALLED_APPS.
Add django.forms to INSTALLED_APPS, now it should look like the following:
INSTALLED_APPS = [
# ...
'django.contrib.gis',
'django_loci',
'django.contrib.admin',
# ↓
'django.forms', # <-- add this
# ↑
'leaflet',
'channels'
# ...
]Now add EXTENDED_APPS after INSTALLED_APPS:
INSTALLED_APPS = [
# ...
]
EXTENDED_APPS = ('django_loci',)Add openwisp_utils.staticfiles.DependencyFinder to STATICFILES_FINDERS:
STATICFILES_FINDERS = [
'django.contrib.staticfiles.finders.FileSystemFinder',
'django.contrib.staticfiles.finders.AppDirectoriesFinder',
'openwisp_utils.staticfiles.DependencyFinder',
]Add openwisp_utils.loaders.DependencyLoader to TEMPLATES:
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'OPTIONS': {
'loaders': [
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
# add the following line
'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',
],
},
}
]Last step, add FORM_RENDERER:
FORM_RENDERER = 'django.forms.renderers.TemplatesSetting'Then you can go ahead and create your admin.py file following the example below:
# admin.py of your app
from django.contrib import admin
from django_loci.base.admin import (AbstractFloorPlanAdmin, AbstractFloorPlanForm,
AbstractFloorPlanInline, AbstractLocationAdmin,
AbstractLocationForm, AbstractObjectLocationForm,
AbstractObjectLocationInline)
from django_loci.models import FloorPlan, Location, ObjectLocation
class FloorPlanForm(AbstractFloorPlanForm):
class Meta(AbstractFloorPlanForm.Meta):
model = FloorPlan
class FloorPlanAdmin(AbstractFloorPlanAdmin):
form = FloorPlanForm
class LocationForm(AbstractLocationForm):
class Meta(AbstractLocationForm.Meta):
model = Location
class FloorPlanInline(AbstractFloorPlanInline):
form = FloorPlanForm
model = FloorPlan
class LocationAdmin(AbstractLocationAdmin):
form = LocationForm
inlines = [FloorPlanInline]
class ObjectLocationForm(AbstractObjectLocationForm):
class Meta(AbstractObjectLocationForm.Meta):
model = ObjectLocation
class ObjectLocationInline(AbstractObjectLocationInline):
model = ObjectLocation
form = ObjectLocationForm
admin.site.register(FloorPlan, FloorPlanAdmin)
admin.site.register(Location, LocationAdmin)Extend the channel consumer of django-loci in this way:
from django_loci.channels.base import BaseLocationBroadcast
from ..models import Location # your own location model
class LocationBroadcast(BaseLocationBroadcast):
model = LocationYou may want to reuse the AppConfig class of django-loci too:
from django_loci.apps import LociConfig
class MyConfig(LociConfig):
name = 'myapp'
verbose_name = _('My custom app')
def __setmodels__(self):
from .models import Location
self.location_model = LocationInstall sqlite:
sudo apt-get install sqlite3 libsqlite3-dev libsqlite3-mod-spatialite gdal-binInstall your forked repo:
git clone git://github.com/<your_fork>/django-loci
cd django-loci/
python setup.py developInstall test requirements:
pip install -r requirements-test.txtCreate database:
cd tests/
./manage.py migrate
./manage.py createsuperuserLaunch development server and SMTP debugging server:
./manage.py runserverYou can access the admin interface at http://127.0.0.1:8000/admin/.
Run tests with:
# pytests is used to test django-channels
./runtests.py && pytest- Announce your intentions in the OpenWISP Mailing List
- Fork this repo and install it
- Follow PEP8, Style Guide for Python Code
- Write code
- Write tests for your code
- Ensure all tests pass
- Ensure test coverage does not decrease
- Document your changes
- Send pull request
See CHANGES.
See LICENSE.
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