add: parse depth proto

backend/src/models.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Computed, DateTime, Index, Integer, String
+from sqlalchemy import Column, Computed, DateTime, Float, Index, Integer, String
 
 # we might need vector concat later, then we'll have to bring in sqlalchemy_utils
 # https://sqlalchemy-utils.readthedocs.io/en/latest/_modules/sqlalchemy_utils/types/ts_vector.html
@@ -48,6 +48,8 @@ class ItemCreate(ItemBase):
 
 
 class Item(ItemBase):
+    depth_min = Column(Float, Computed("SPLIT_PART(depth,'-',1)"))
+    depth_max = Column(Float, Computed("SPLIT_PART(depth,'-',2)"))
 
     geodata_search_ts = Column(
         TSVECTOR,

backend/src/schemas.py

@@ -58,6 +58,9 @@ class ItemCreate(ItemBase):
 class Item(ItemBase):
     id: int
 
+    depth_min: Optional[float] = None
+    depth_max: Optional[float] = None
+
     class Config:
         orm_mode = True