accrete 0.0.118

Django Shared Schema Multi Tenant

Multi Tenant App for Django

Shared approach multi tenancy system for Django Projects.

Installation

Add accrete to installed_apps and accrete.middleware.TenantMiddleware to middleware

TenantModel

Base Model with a ForeignKey to tenant.Tenant and objects set to accrete.models.TenantManager

Basic Usage

from accrete.models import TenantModel

class MyModel(TenantModel):
    ...

---

Each user can be a member of multiple Tenants, just add them to tenant.members.
This is necessary when using the Mixins and Middleware provided by this app.

Middleware

tenant.middleware.TenantMiddleware

This Middleware adds the Tenant(request.tenant) and Member(request.member) objects as attributes to the request object and sets a cookie with the tenant_id.

If the user is a member of multiple tenants, the request is parsed for a tenant_id in this order.

• The "tenant" parameter in the POST data
• The Header X-TENANT-ID
• The "tenant_id" URL Parameter in the GET data
• The "tenant_id" cookie previously set by the Middleware

If no tenant could be assigned the two attributes are set to None.
Additionally, the user is checked for membership of the found tenant.

Adds the tenant to the POST data.

The Middleware must be added to the MIDDLEWARE setting after your authentication Middleware as it needs access to request.user.is_authenticated().

Views

Mixins

tenant.views.TenantRequiredMixin

Adds tenant and optionally access right checks to the dispatch method.
This Mixin is meant as a substitute to django.contrib.auth.mixins.LoginRequiredMixin as TenantRequiredMixin inherits LoginRequiredMixin.

Adds the member_access_groups attribute to the view. This attribute can be a list of codes from the tenant.models.AccessGroup model. If present, the member must be part of one of the listed groups to access the view. Failing checks are handled in a similar way as in LoginRequiredMixin.

Decorators

tenant.decorators.tenant_required

Substitute for django.contrib.auth.decorators.login_required
Checks if a tenant is set on the request and redirects to the TENANT_MISSING_URL specified in the settings.

The decorator itself is wrapped by login_required and can pass the arguments redirect_field_name and login_url to login_required.

Forms

tenant.forms.Form

Form class that adds the tenant as a field and filters the queryset of every field that has a queryset attribute.

tenant.forms.ModelForm

Same behaviour as tenant.forms.Form.

Settings

Custom settings

• TENANT_MISSING_URL
  Redirect to this URL when no tenant could be set for an authenticated user.

• TENANT_MEMBER_NOT_AUTHORIZED_URL
  Redirect to this URL when a member tries to access a URL without having the needed access rights.