django-admincharts 0.2.1

Chart.js integration for Django admin models

django-admincharts

Add Chart.js visualizations to your Django admin using a mixin class.

Example

from django.contrib import admin

from .models import BillingAccount
from admincharts.admin import AdminChartMixin
from admincharts.utils import months_between_dates


@admin.register(BillingAccount)
class BillingAccountAdmin(AdminChartMixin, admin.ModelAdmin):
    def get_list_chart_data(self, queryset):
        if not queryset:
            return {}

        # Cannot reorder the queryset at this point
        earliest = min([x.ctime for x in queryset])

        labels = []
        totals = []
        for b in months_between_dates(earliest, timezone.now()):
            labels.append(b.strftime("%b %Y"))
            totals.append(
                len(
                    [
                        x
                        for x in queryset
                        if x.ctime.year == b.year and x.ctime.month == b.month
                    ]
                )
            )

        return {
            "labels": labels,
            "datasets": [
                {"label": "New accounts", "data": totals, "backgroundColor": "#79aec8"},
            ],
        }

Installation

Install from pypi.org:

$ pip install django-admincharts

Add admincharts to your Django INSTALLED_APPS:

INSTALLED_APPS = [
    ...
    "admincharts",
]

Use the AdminChartMixin with an admin.ModelAdmin class to add a chart to the changelist view.

Options can be set directly on the class:

from django.contrib import admin
from admincharts.admin import AdminChartMixin

@admin.register(MyModel)
class MyModelAdmin(AdminChartMixin, admin.ModelAdmin):
    list_chart_type = "bar"
    list_chart_data = {}
    list_chart_options = {"aspectRatio": 6}
    list_chart_config = None  # Override the combined settings

Or by using the class methods which gives you access to the queryset being used for the current view:

class MyModelAdmin(AdminChartMixin, admin.ModelAdmin):
    def get_list_chart_queryset(self, result_list):
        ...

    def get_list_chart_type(self, queryset):
        ...

    def get_list_chart_data(self, queryset):
        ...

    def get_list_chart_options(self, queryset):
        ...

    def get_list_chart_config(self, queryset):
        ...

The type, data, and options are passed directly to Chart.js to render the chart. Look at the Chart.js docs to see what kinds of settings can be used.

By default, the objects in your chart will be the objects that are currently visible in your list view. This means that admin controls like search and list filter will update your chart, and you can use the Django pagination settings to control how many objects you want in your chart at a time. If you want, you can also sidestep the list queryset entirely by using overriding get_list_chart_queryset.