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fix: Use request.tenant instead of request.user.tenant for user validation

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Platform-level users (owners) may have tenant=None on their user record
but still access tenant subdomains. The _get_valid_user method now uses
request.tenant (from django-tenants middleware) which is set based on
the subdomain being accessed, not the user's tenant FK.

This fixes 400 Bad Request errors when platform users try to create
resources with staff assignments.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
poduck
2025-12-08 10:11:38 -05:00
parent 8dc2248f1f
commit 156ad09232
1 changed files with 13 additions and 3 deletions
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16
smoothschedule/smoothschedule/scheduling/schedule/serializers.py
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@@ -223,10 +223,14 @@ class ResourceSerializer(serializers.ModelSerializer):
def _get_valid_user(self, user_id):
"""
Get a user by ID, validating they belong to the same tenant as the request user.
Get a user by ID, validating they belong to the same tenant as the request.
Returns None if user doesn't exist or doesn't belong to the same tenant.
CRITICAL: This prevents cross-tenant user linking (multi-tenancy security).
Uses request.tenant (from django-tenants middleware) rather than request.user.tenant
because platform-level users (owners) may have tenant=None on their user record
but still access tenant subdomains.
"""
if not user_id:
return None
@@ -235,10 +239,16 @@ class ResourceSerializer(serializers.ModelSerializer):
if not request or not request.user.is_authenticated:
return None
# Use request.tenant (from django-tenants middleware) - this is set based on
# the subdomain being accessed, not the user's tenant FK
tenant = getattr(request, 'tenant', None)
if not tenant:
return None
try:
user = User.objects.get(id=user_id)
# Verify user belongs to the same tenant
if request.user.tenant and user.tenant == request.user.tenant:
# Verify user belongs to the same tenant as the request
if user.tenant == tenant:
return user
return None
except User.DoesNotExist: