fix auditlog refs (ethyca#479)

src/fidesops/models/fidesops_user.py

@@ -6,6 +6,7 @@
 
 from fidesops.core.config import config
 from fidesops.db.base_class import Base
+from fidesops.models.audit_log import AuditLog
 from fidesops.util.cryptographic_util import generate_salt, hash_with_salt
 
 
@@ -20,6 +21,16 @@ class FidesopsUser(Base):
     last_login_at = Column(DateTime(timezone=True), nullable=True)
     password_reset_at = Column(DateTime(timezone=True), nullable=True)
 
+    # passive_deletes="all" prevents audit logs from having their privacy_request_id set to null when
+    # a privacy_request is deleted.  We want to retain for record-keeping.
+    audit_logs = relationship(
+        AuditLog,
+        backref="fidesops_user",
+        lazy="dynamic",
+        passive_deletes="all",
+        primaryjoin="foreign(AuditLog.user_id)==FidesopsUser.id",
+    )
+
     client = relationship(
         "ClientDetail", backref="user", cascade="all, delete", uselist=False
     )

src/fidesops/models/privacy_request.py

@@ -25,6 +25,7 @@
     Base,
     FidesopsBase,
 )
+from fidesops.models.audit_log import AuditLog
 from fidesops.models.client import ClientDetail
 from fidesops.models.fidesops_user import FidesopsUser
 from fidesops.models.policy import (
@@ -134,7 +135,7 @@ class PrivacyRequest(Base):
     # passive_deletes="all" prevents audit logs from having their privacy_request_id set to null when
     # a privacy_request is deleted.  We want to retain for record-keeping.
     audit_logs = relationship(
-        "AuditLog",
+        AuditLog,
         backref="privacy_request",
         lazy="dynamic",
         passive_deletes="all",