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70 lines
2.6 KiB
Python
70 lines
2.6 KiB
Python
from iti.applications.models import SysDept
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from iti.applications.routes.sys.schemas.dept import SysDeptQuery
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from iti.applications.extensions import db
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from iti.applications.common.utils import build_tree_from_list
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from sqlalchemy.orm import joinedload, noload
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from sqlalchemy.sql._typing import ColumnExpressionArgument
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def get_dept_tree_or_page(query_data: SysDeptQuery, with_leader: bool = False):
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"""
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获取部门树
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"""
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# 若根据 Leader 查询，查询该 Leader 的部门列表（分页），而非树
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if query_data.leader_id:
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return (
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SysDept.query.filter(SysDept.leader_id == query_data.leader_id)
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.order_by(SysDept.sort)
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.paginate(page=query_data.page, per_page=query_data.size)
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)
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# 若根据 Parent 查询，查询该 Parent 的子部门树，否则查询所有部门树
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cte_query = build_descendants_cte(SysDept.parent_id == query_data.parent_id)
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if query_data.name:
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cte_query = cte_query.filter(SysDept.name.like(f"%{query_data.name}%"))
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if query_data.status:
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cte_query = cte_query.filter(SysDept.status == query_data.status)
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if query_data.startTime:
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cte_query = cte_query.filter(SysDept.created_at >= query_data.startTime)
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if query_data.endTime:
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cte_query = cte_query.filter(SysDept.created_at <= query_data.endTime)
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cte_query = cte_query.order_by(SysDept.parent_id, SysDept.sort).options(
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noload(SysDept.parent), noload(SysDept.children)
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)
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if with_leader:
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cte_query = cte_query.options(joinedload(SysDept.leader))
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return build_tree_from_list(cte_query.all())
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def build_descendants_cte(*criterion: ColumnExpressionArgument[bool]):
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"""
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构建获取后代的递归CTE
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"""
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hierarchy = (
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db.session.query(SysDept.id, SysDept.parent_id)
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.filter(*criterion)
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.cte("hierarchy", recursive=True)
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)
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bt = db.session.query(SysDept.id, SysDept.parent_id).join(
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hierarchy, hierarchy.c.id == SysDept.parent_id
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)
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q = hierarchy.union_all(bt)
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return db.session.query(SysDept).join(q, SysDept.id == q.c.id)
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def build_ancestors_cte(*criterion: ColumnExpressionArgument[bool]):
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"""
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构建获取祖先的递归CTE
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"""
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hierarchy = (
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db.session.query(SysDept.id, SysDept.parent_id)
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.filter(*criterion)
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.cte("hierarchy", recursive=True)
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)
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bt = db.session.query(SysDept.id, SysDept.parent_id).join(
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hierarchy, hierarchy.c.id == SysDept.parent_id
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)
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q = hierarchy.union_all(bt)
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return db.session.query(SysDept).join(q, SysDept.id == q.c.id)
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