refactor: equipment master join equipment tree

src/equipment_master/model.py

@@ -44,10 +44,13 @@ class EquipmentMaster(Base, DefaultMixin):
         "EquipmentMaster", backref=backref("parent", remote_side=[id]), lazy="selectin"
     )
 
-    # equipment_tree = relationship(
+    equipment_tree = relationship(
-    #     "EquipmentTree",
+        "EquipmentTree",
-    #     back_populates="equipment_master"
+        lazy="selectin",
-    # )
+        primaryjoin="and_(EquipmentTree.id == foreign(EquipmentMaster.equipment_tree_id))",
+        viewonly=True,
+        uselist=False,
+    )
 
 
 class EquipmentTree(Base, DefaultMixin):

src/equipment_master/schema.py

@@ -1,4 +1,3 @@
-
 from datetime import datetime
 from typing import ForwardRef, List, Optional
 from uuid import UUID
@@ -18,14 +17,22 @@ class EquipmentMasterCreate(EquipmentMasterBase):
     pass
 
 
+class EquipmentTree(DefaultBase):
+    level_no: Optional[int] = Field(None, nullable=True)
+    name: Optional[str] = Field(None, nullable=True)
+
+
 class EquipmentMasterUpdate(EquipmentMasterBase):
     pass
 
-EquipmentMasterReadRef = ForwardRef('EquipmentMasterRead')
+
+EquipmentMasterReadRef = ForwardRef("EquipmentMasterRead")
+
 
 class EquipmentMasterRead(EquipmentMasterBase):
     id: UUID
     equipment_tree_id: Optional[UUID] = Field(None, nullable=True)
+    equipment_tree: EquipmentTree
     category_id: Optional[UUID] = Field(None, nullable=True)
     system_tag: Optional[str] = Field(None, nullable=True)
     assetnum: Optional[str] = Field(None, nullable=True)
@@ -33,6 +40,5 @@ class EquipmentMasterRead(EquipmentMasterBase):
     children: List[EquipmentMasterReadRef]  # type: ignore
 
 
-
 class EquipmentMasterPaginated(Pagination):
     items: List[EquipmentMasterRead] = []