79 lines
2.2 KiB
Python
79 lines
2.2 KiB
Python
"""Helper functions for interacting with filament database objects."""
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from typing import Optional
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from sqlalchemy.ext.asyncio import AsyncSession
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from spoolman.database import models, vendor
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from spoolman.exceptions import ItemNotFoundError
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async def create(
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*,
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db: AsyncSession,
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density: float,
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diameter: float,
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name: Optional[str] = None,
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vendor_id: Optional[int] = None,
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material: Optional[str] = None,
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price: Optional[float] = None,
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weight: Optional[float] = None,
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spool_weight: Optional[float] = None,
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article_number: Optional[str] = None,
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comment: Optional[str] = None,
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) -> models.Filament:
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"""Add a new filament to the database."""
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vendor_item: Optional[models.Vendor] = None
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if vendor_id is not None:
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vendor_item = await vendor.get_by_id(db, vendor_id)
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db_item = models.Filament(
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name=name,
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vendor=vendor_item,
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material=material,
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price=price,
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density=density,
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diameter=diameter,
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weight=weight,
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spool_weight=spool_weight,
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article_number=article_number,
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comment=comment,
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)
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db.add(db_item)
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await db.flush()
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return db_item
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async def get_by_id(db: AsyncSession, filament_id: int) -> models.Filament:
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"""Get a filament object from the database by the unique ID."""
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filament = await db.get(models.Filament, filament_id)
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if filament is None:
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raise ItemNotFoundError(f"No filament with ID {filament_id} found.")
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return filament
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async def update(
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*,
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db: AsyncSession,
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filament_id: int,
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data: dict,
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) -> models.Filament:
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"""Update the fields of a filament object."""
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filament = await get_by_id(db, filament_id)
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for k, v in data.items():
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if k == "vendor_id":
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if v is None:
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filament.vendor = None
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else:
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filament.vendor = await vendor.get_by_id(db, v)
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else:
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setattr(filament, k, v)
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await db.flush()
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return filament
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async def delete(db: AsyncSession, filament_id: int) -> None:
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"""Delete a filament object."""
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filament = await get_by_id(db, filament_id)
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await db.delete(filament)
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