Initialize Fonrey Django multi-tenant project skeleton

Set up the required directory layout, app scaffolding, core settings, templates, static assets, and Docker/Tailwind tooling to establish a standardized development baseline.

core/models/base.py

@@ -0,0 +1,80 @@
+import uuid
+
+from django.db import models
+from django.utils import timezone
+
+
+class UUIDPrimaryKeyModel(models.Model):
+    """所有业务模型的根基类：UUID v4 主键"""
+
+    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+
+    class Meta:
+        abstract = True
+
+
+class TimeStampedModel(UUIDPrimaryKeyModel):
+    """追加创建/更新时间（TIMESTAMPTZ）"""
+
+    created_at = models.DateTimeField(auto_now_add=True, db_index=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        abstract = True
+        ordering = ["-created_at"]
+
+
+class ActiveManager(models.Manager):
+    """默认只返回未软删除的记录"""
+
+    def get_queryset(self):
+        return super().get_queryset().filter(deleted_at__isnull=True)
+
+
+class SoftDeleteModel(TimeStampedModel):
+    """软删除：deleted_at=NULL 表示未删除"""
+
+    deleted_at = models.DateTimeField(null=True, blank=True, db_index=True)
+    objects = ActiveManager()
+    all_objects = models.Manager()
+
+    def delete(self, using=None, keep_parents=False):
+        self.deleted_at = timezone.now()
+        self.save(update_fields=["deleted_at"])
+
+    def hard_delete(self):
+        super().delete()
+
+    def restore(self):
+        self.deleted_at = None
+        self.save(update_fields=["deleted_at"])
+
+    @property
+    def is_deleted(self):
+        return self.deleted_at is not None
+
+    class Meta:
+        abstract = True
+
+
+class AuditedModel(SoftDeleteModel):
+    """审计字段：操作人（FK to Staff，允许 NULL 表示系统操作）"""
+
+    created_by = models.ForeignKey(
+        "org.Staff",
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        related_name="%(app_label)s_%(class)s_created",
+        db_index=True,
+    )
+    updated_by = models.ForeignKey(
+        "org.Staff",
+        null=True,
+        blank=True,
+        on_delete=models.SET_NULL,
+        related_name="%(app_label)s_%(class)s_updated",
+    )
+
+    class Meta:
+        abstract = True