129 lines
5.4 KiB
Python
129 lines
5.4 KiB
Python
from django.core.cache import cache
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from rest_framework.permissions import BasePermission, DjangoModelPermissions
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from apps.utils.queryset import get_child_queryset2
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from apps.system.models import Dept, Permission, Post, Role, UserPost
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from django.db.models import Q
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from django.db.models.query import QuerySet
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def get_user_perms_map(user):
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"""
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获取权限字典,可用redis存取
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"""
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user_perms_map = {}
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if user.is_superuser:
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user_perms_map = {'superuser':None}
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else:
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objs = UserPost.objects.filter(user=user)
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for i in objs:
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dept_id = str(i.dept.id)
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if i.post.roles: # 岗位下有角色
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for perm in Permission.objects.filter(role__perms__in=i.post.roles):
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if perm.codes:
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for code in perm.codes:
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if code in user_perms_map:
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data_range = user_perms_map[code].get(dept_id, -1)
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if i.post.data_range < data_range:
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user_perms_map[code][dept_id] = data_range
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else:
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user_perms_map[code] = {dept_id:i.post.data_range}
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cache.set('perms_' + user.id, user_perms_map, 60*60)
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return user_perms_map
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class RbacPermission(BasePermission):
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"""
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基于角色的权限校验类
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"""
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def has_permission(self, request, view):
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"""
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权限校验逻辑
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:param request:
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:param view:
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:return:
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"""
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if not hasattr(view, 'perms_map'):
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return True
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user_perms_map = cache.get('perms_' + request.user.id, None)
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if user_perms_map is None:
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user_perms_map = get_user_perms_map(request.user)
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if isinstance(user_perms_map, dict):
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if 'superuser' in user_perms_map:
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return True
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else:
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perms_map = view.perms_map
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_method = request._request.method.lower()
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if perms_map:
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for key in perms_map:
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if key == _method or key == '*':
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if perms_map[key] in user_perms_map or perms_map[key] == '*':
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return True
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return False
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return False
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class RbacDataMixin:
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"""
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数据权限控权返回的queryset
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在必须的View下继承
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需要控数据权限的表需有belong_dept, create_by, update_by字段(部门, 创建人, 编辑人)
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带性能优化
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此处对性能有较大影响,根据业务需求进行修改或取舍
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"""
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def get_queryset(self):
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assert self.queryset is not None, (
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"'%s' should either include a `queryset` attribute, "
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"or override the `get_queryset()` method."
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% self.__class__.__name__
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)
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queryset = self.queryset
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if isinstance(queryset, QuerySet):
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# Ensure queryset is re-evaluated on each request.
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queryset = queryset.all()
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if hasattr(self.get_serializer_class(), 'setup_eager_loading'):
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queryset = self.get_serializer_class().setup_eager_loading(queryset) # 性能优化
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if self.request.user.is_superuser:
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return queryset
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if hasattr(queryset.model, 'belong_dept'):
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user = self.request.user
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user_perms_map = cache.get('perms_' + user.id, None)
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if user_perms_map is None:
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user_perms_map = get_user_perms_map(self.request.user)
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if isinstance(user_perms_map, dict):
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if hasattr(self.view, 'perms_map'):
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perms_map = self.view.perms_map
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action_str = perms_map.get(self.request._request.method.lower(), None)
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if '*' in perms_map:
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return queryset
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elif action_str == '*':
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return queryset
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elif action_str in user_perms_map:
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new_queryset = queryset.none()
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for dept_id, data_range in user_perms_map[action_str].items:
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dept = Dept.objects.get(id=dept_id)
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if data_range == Post.POST_DATA_ALL:
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return queryset
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elif data_range == Post.POST_DATA_SAMELEVE_AND_BELOW:
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if dept.parent:
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belong_depts = get_child_queryset2(dept.parent)
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else:
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belong_depts = get_child_queryset2(dept)
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queryset = queryset.filter(belong_dept__in = belong_depts)
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elif data_range == Post.POST_DATA_THISLEVEL_AND_BELOW:
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belong_depts = get_child_queryset2(dept)
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queryset = queryset.filter(belong_dept__in = belong_depts)
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elif data_range == Post.POST_DATA_THISLEVEL:
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queryset = queryset.filter(belong_dept = dept)
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elif data_range == Post.POST_DATA_THISLEVEL:
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queryset = queryset.filter(create_by = user)
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new_queryset = new_queryset | queryset
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return new_queryset
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else:
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return queryset.none()
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return queryset
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