33 lines
1004 B
Python
33 lines
1004 B
Python
from apps.user.models import Department
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from config.exceptions import AppError
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def resolve_department(department_name: str):
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"""按名称解析科室，返回 Department 实例。
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- 空/None → 返回 None（不强制）
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- 精确匹配 1 条 → 返回该 Department
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- 匹配 0 条 → 400 CASE_DEPARTMENT_NOT_FOUND
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- 匹配多条 → 400 CASE_DEPARTMENT_AMBIGUOUS
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"""
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if not department_name:
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return None
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qs = Department.objects.filter(name=department_name)
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count = qs.count()
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if count == 0:
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raise AppError(
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'CASE_DEPARTMENT_NOT_FOUND',
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f'科室 "{department_name}" 不存在',
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status_code=400,
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)
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if count > 1:
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raise AppError(
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'CASE_DEPARTMENT_AMBIGUOUS',
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f'科室 "{department_name}" 匹配到多条记录，请精确指定',
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details={'matches': list(qs.values_list('name', flat=True))},
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status_code=400,
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)
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return qs.first()
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