72 lines
2.7 KiB
Python
72 lines
2.7 KiB
Python
from typing import Any, Dict, List, Optional
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from ..utils.access_permissions import BaseAccessPermissions # noqa
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from ..utils.auth import has_perm
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from ..utils.collection import CollectionElement
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class AssignmentAccessPermissions(BaseAccessPermissions):
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"""
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Access permissions container for Assignment and AssignmentViewSet.
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"""
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def check_permissions(self, user):
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"""
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Returns True if the user has read access model instances.
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"""
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return has_perm(user, 'assignments.can_see')
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def get_serializer_class(self, user=None):
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"""
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Returns different serializer classes according to users permissions.
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"""
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from .serializers import AssignmentFullSerializer, AssignmentShortSerializer
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if user is None or (has_perm(user, 'assignments.can_see') and has_perm(user, 'assignments.can_manage')):
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serializer_class = AssignmentFullSerializer
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else:
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serializer_class = AssignmentShortSerializer
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return serializer_class
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def get_restricted_data(
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self,
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full_data: List[Dict[str, Any]],
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user: Optional[CollectionElement]) -> List[Dict[str, Any]]:
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"""
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Returns the restricted serialized data for the instance prepared
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for the user. Removes unpublished polls for non admins so that they
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only get a result like the AssignmentShortSerializer would give them.
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"""
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# Parse data.
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if has_perm(user, 'assignments.can_see') and has_perm(user, 'assignments.can_manage'):
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data = full_data
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elif has_perm(user, 'assignments.can_see'):
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# Exclude unpublished poll votes.
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data = []
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for full in full_data:
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full_copy = full.copy()
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polls = full_copy['polls']
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for poll in polls:
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if not poll['published']:
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for option in poll['options']:
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option['votes'] = [] # clear votes for not published polls
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poll['has_votes'] = False # A user should see, if there are votes.
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data.append(full_copy)
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else:
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data = []
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return data
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def get_projector_data(self, full_data: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
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"""
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Returns the restricted serialized data for the instance prepared
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for the projector. Removes unpublished polls.
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"""
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# Parse data. Exclude unpublished polls.
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data = []
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for full in full_data:
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full_copy = full.copy()
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full_copy['polls'] = [poll for poll in full['polls'] if poll['published']]
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data.append(full_copy)
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return data
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