Tools for building data dashboards with Django
Project description
Tools to help you build data dashboards in Django.
https://github.com/wildfish/django-dashboards
Features
Dashboard view generation with components including stats, tables, charts and more.
HTMX driven dashboards and templates for a modern MPA interface.
Supports Django 3.2 to 4.2, on Python 3.9+.
See the full documentation for details of how django-dashboards works.
Quickstart
This is a quickstart guide for creating a simple dashboard.
Project Setup
We recommend using a virtual environment such as pyenv to manage your dependencies and Python versions. From this point we assume you have a environment setup, activated & pip installed.
Create a new Django project:
# Create the project directory mkdir demo cd demo # Install pip install django-dashboards # Set up a new project django-admin startproject demo . cd demo django-admin startapp mydashboard cd .. # Sync the database python manage.py migrate
Dashboards
First you need to setup a dashboard definition. Create a new file demo/mydashboard/dashboards.py
:
from dashboards.dashboard import Dashboard from dashboards.component import Text, Chart from dashboards.registry import registry from demo.mydashboard.data import DashboardData class FirstDashboard(Dashboard): welcome = Text(value="Welcome to Django Dashboards!") animals = Chart(defer=DashboardData.fetch_animals) class Meta: name = "First Dashboard" registry.register(FirstDashboard)
Remember to register your dashboard class in order for it to work with the auto urls.
Data
Data for the dashboard component can be inline (welcome) or come from a callable (animals).
In the example above the data for animals is returned from fetch_animals. We set this up now.
Create a new file demo/mydashboard/data.py
:
import json class DashboardData: @staticmethod def fetch_animals(**kwargs) -> str: data = {"giraffes": 20, "orangutans": 14, "monkeys": 23} return json.dumps(dict( data=[ dict( x=list(data.keys()), y=list(data.values()), type="bar", ) ] ))
This returns a json object with values for x, y, and type. This is interpreted by the component and rendered as a bar chart.
Config
In order to get the auto urls to register we need to update demo/mydashboard/apps.py
:
from django.apps import AppConfig class MydashboardConfig(AppConfig): default_auto_field = 'django.db.models.BigAutoField' name = 'demo.mydashboard' def ready(self): # for registry import demo.mydashboard.dashboards # type: ignore # noqa
URLs
Next we need to wire up the dashboard urls. In demo/urls.py
:
from django.contrib import admin from django.urls import include, path urlpatterns = [ path('admin/', admin.site.urls), path('dashboards/', include('dashboards.urls')), ]
Settings
Finally add dashboards
and your new app demo.mydashboard
to INSTALLED_APPS in demo/settings.py
:
INSTALLED_APPS = [ ... "dashboards", "demo.mydashboard", ]
And we’re done.
Viewing the Dashboard
Start the Django server from the command line.:
python manage.py runserver
The dashboard urls are automatically generated based on the app name and dashboard meta name.
For this demo the url will be http://127.0.0.1:8000/dashboards/mydashboard/firstdashboard/
Expanding your dashboard
FirstDashboard was very simplistic, so lets expand on that and use some more components. We’ll inherit from FirstDashboard to create:
from dashboards.dashboard import Dashboard from dashboards.component import Text, Chart, Table from dashboards.registry import registry from demo.mydashboard.data import DashboardData, ContentTypeTableSerializer, ContentTypeChartSerializer class FirstDashboard(Dashboard): welcome = Text(value="Welcome to Django Dashboards!") animals = Chart(defer=DashboardData.fetch_animals) class Meta: name = "First Dashboard" class SecondDashboard(FirstDashboard): express_animals = Chart(defer=DashboardData.express_animals) content_types = Table(value=ContentTypeTableSerializer) content_types_chart = Chart(defer=ContentTypeChartSerializer, grid_css_classes="span-12") class Meta: name = "Second Dashboard" registry.register(FirstDashboard) registry.register(SecondDashboard)
and:
import json import plotly.express as px from django.contrib.contenttypes.models import ContentType from dashboards.component.chart import ChartSerializer from dashboards.component.table import TableSerializer class DashboardData: @staticmethod def fetch_animals(**kwargs) -> str: data = {"giraffes": 20, "orangutans": 14, "monkeys": 23} return json.dumps(dict( data=[ dict( x=list(data.keys()), y=list(data.values()), type="bar", ) ] )) @staticmethod def express_animals(**kwargs): data = dict( animal=["giraffes", "orangutans", "monkeys"], value=[20, 14, 23] ) fig = px.pie( data, names='animal', values='value', ) return fig.to_json() class ContentTypeTableSerializer(TableSerializer): class Meta: columns = { "app_label": "App", "model": "Model" } model = ContentType class ContentTypeChartSerializer(ChartSerializer): class Meta: fields = ["app_label", "model"] model = ContentType def to_fig(self, df): fig = px.scatter( df, x="app_label", y="model", ) return fig
Here we’ve added a few more components:
express_animals - A deferred pie chart, that instead of direct json renders via plotly express to_json(), which allows us to quick;y convert dicts and Pandas DataFrames into charts.
content_types - A table (which could also be deferred) via our TableSerializer, which outputs data direct from a django model.
content_types_chart - A chart which is an example of a ChartSerializer, again outputting data direct from a django model.
Which looks like:
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