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120 lines
3.8 KiB
120 lines
3.8 KiB
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from django.utils.translation import ugettext_lazy as _
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from django.db import models
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from django.db.models import F, TextChoices
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from common.utils import lazyproperty
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from common.db.models import BaseCreateUpdateModel
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from assets.models import Asset, Node, FamilyMixin, Account
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from orgs.mixins.models import OrgModelMixin
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class UserAssetGrantedTreeNodeRelation(OrgModelMixin, FamilyMixin, BaseCreateUpdateModel):
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class NodeFrom(TextChoices):
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granted = 'granted', 'Direct node granted'
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child = 'child', 'Have children node'
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asset = 'asset', 'Direct asset granted'
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user = models.ForeignKey('users.User', db_constraint=False, on_delete=models.CASCADE)
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node = models.ForeignKey('assets.Node', default=None, on_delete=models.CASCADE,
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db_constraint=False, null=False, related_name='granted_node_rels')
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node_key = models.CharField(max_length=64, verbose_name=_("Key"), db_index=True)
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node_parent_key = models.CharField(max_length=64, default='', verbose_name=_('Parent key'),
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db_index=True)
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node_from = models.CharField(choices=NodeFrom.choices, max_length=16, db_index=True)
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node_assets_amount = models.IntegerField(default=0)
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@property
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def key(self):
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return self.node_key
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@property
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def parent_key(self):
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return self.node_parent_key
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@classmethod
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def get_node_granted_status(cls, user, key):
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ancestor_keys = set(cls.get_node_ancestor_keys(key, with_self=True))
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ancestor_rel_nodes = cls.objects.filter(user=user, node_key__in=ancestor_keys)
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for rel_node in ancestor_rel_nodes:
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if rel_node.key == key:
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return rel_node.node_from, rel_node
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if rel_node.node_from == cls.NodeFrom.granted:
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return cls.NodeFrom.granted, None
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return '', None
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class PermNode(Node):
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class Meta:
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proxy = True
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ordering = []
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# 特殊节点
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UNGROUPED_NODE_KEY = 'ungrouped'
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UNGROUPED_NODE_VALUE = _('Ungrouped')
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FAVORITE_NODE_KEY = 'favorite'
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FAVORITE_NODE_VALUE = _('Favorite')
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node_from = ''
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granted_assets_amount = 0
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annotate_granted_node_rel_fields = {
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'granted_assets_amount': F('granted_node_rels__node_assets_amount'),
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'node_from': F('granted_node_rels__node_from')
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}
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def use_granted_assets_amount(self):
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self.assets_amount = self.granted_assets_amount
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@classmethod
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def get_ungrouped_node(cls, assets_amount):
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return cls(
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id=cls.UNGROUPED_NODE_KEY,
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key=cls.UNGROUPED_NODE_KEY,
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value=cls.UNGROUPED_NODE_VALUE,
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assets_amount=assets_amount
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)
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@classmethod
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def get_favorite_node(cls, assets_amount):
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node = cls(
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id=cls.FAVORITE_NODE_KEY,
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key=cls.FAVORITE_NODE_KEY,
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value=cls.FAVORITE_NODE_VALUE,
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)
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node.assets_amount = assets_amount
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return node
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def get_granted_status(self, user):
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status, rel_node = UserAssetGrantedTreeNodeRelation.get_node_granted_status(user, self.key)
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self.node_from = status
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if rel_node:
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self.granted_assets_amount = rel_node.node_assets_amount
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return status
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def save(self):
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# 这是个只读 Model
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raise NotImplementedError
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class PermedAsset(Asset):
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class Meta:
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proxy = True
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verbose_name = _('Permed asset')
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permissions = [
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('view_myassets', _('Can view my assets')),
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('view_userassets', _('Can view user assets')),
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('view_usergroupassets', _('Can view usergroup assets')),
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]
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class PermedAccount(Account):
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@lazyproperty
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def actions(self):
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return 0
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class Meta:
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proxy = True
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verbose_name = _('Permed account')
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