Introduce workspace tenancy boundaries

core/context_processors.py

@@ -1,7 +1,22 @@
 from django.urls import reverse
 from django.utils.translation import gettext as _
 
-from .models import UserPreference
+from .models import UserPreference, WorkspaceMembership, get_or_create_personal_workspace
+
+
+def active_workspace_navigation(request):
+    if not request.user.is_authenticated:
+        return {'active_workspace': None, 'workspace_memberships': []}
+    workspace = get_or_create_personal_workspace(request.user)
+    workspace_id = request.session.get('workspace_id')
+    if workspace_id:
+        membership = WorkspaceMembership.objects.select_related('workspace').filter(user=request.user, workspace_id=workspace_id).first()
+        if membership:
+            workspace = membership.workspace
+    return {
+        'active_workspace': workspace,
+        'workspace_memberships': WorkspaceMembership.objects.filter(user=request.user).select_related('workspace').order_by('workspace__name'),
+    }
 
 
 def overview_navigation(request):