msc: type resolution as float

backend/src/migrations/env.py

@@ -5,6 +5,7 @@ from sqlalchemy import pool
 
 from alembic import context
 
+
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.
 config = context.config
@@ -45,6 +46,7 @@ def run_migrations_offline() -> None:
         target_metadata=target_metadata,
         literal_binds=True,
         dialect_opts={"paramstyle": "named"},
+        compare_type=True,
     )
 
     with context.begin_transaction():
@@ -65,7 +67,11 @@ def run_migrations_online() -> None:
     )
 
     with connectable.connect() as connection:
-        context.configure(connection=connection, target_metadata=target_metadata)
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            compare_type=True,
+        )
 
         with context.begin_transaction():
             context.run_migrations()

backend/src/migrations/versions/15b3c7a8e804_cast_resolution_as_float.py

@@ -0,0 +1,38 @@
+"""Cast resolution as float
+
+Revision ID: 15b3c7a8e804
+Revises: 4968a333a100
+Create Date: 2022-10-31 23:55:04.806055
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "15b3c7a8e804"
+down_revision = "4968a333a100"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands MANUALLY composed for Alembic ###
+    op.execute(
+        sa.text(
+            "ALTER TABLE geodata ALTER COLUMN resolution TYPE FLOAT USING resolution::double precision"
+        )
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic ###
+    op.alter_column(
+        "geodata",
+        "resolution",
+        existing_type=sa.Float(),
+        type_=sa.VARCHAR(),
+        existing_nullable=True,
+    )
+    # ### end Alembic commands ###

backend/src/models.py

@@ -9,8 +9,9 @@ from sqlalchemy.dialects.postgresql import TSVECTOR
 # if we are run as a module or as a script
 # https://stackoverflow.com/questions/14132789/relative-imports-for-the-billionth-time/14132912
 import sys
-parent_module = sys.modules['.'.join(__name__.split('.')[:-1]) or '__main__']
-if __name__ == '__main__' or parent_module.__name__ == '__main__':
+
+parent_module = sys.modules[".".join(__name__.split(".")[:-1]) or "__main__"]
+if __name__ == "__main__" or parent_module.__name__ == "__main__":
     from database import Base
 else:
     from .database import Base
@@ -45,7 +46,7 @@ class ItemBase(Base):
     description = Column(String)
     form_dimentions = Column(String)
     datalist = Column(String)
-    resolution = Column(String)
+    resolution = Column(Float)
     date = Column(String)
     additional_info = Column(String)
     scanner = Column(String)

backend/src/schemas.py

@@ -69,7 +69,7 @@ class ItemBase(BaseModel):
     description: Optional[str] = None
     form_dimentions: Optional[str] = None
     datalist: Optional[str] = None
-    resolution: Optional[str] = None
+    resolution: Optional[float] = None
     date: Optional[Union[datetime, str]] = None
     additional_info: Optional[str] = None
     scanner: Optional[str] = None