86 lines
3.2 KiB
Python
86 lines
3.2 KiB
Python
from ..utils.access_permissions import BaseAccessPermissions
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from ..utils.auth import has_perm
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from ..utils.collection import Collection
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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(self, container, user):
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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 Removes unpublished polls for non admins so that they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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# Expand full_data to a list if it is not one.
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full_data = container.get_full_data() if isinstance(container, Collection) else [container.get_full_data()]
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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 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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else:
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data = []
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# Reduce result to a single item or None if it was not a collection at
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# the beginning of the method.
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if isinstance(container, Collection):
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restricted_data = data
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elif data:
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restricted_data = data[0]
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else:
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restricted_data = None
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return restricted_data
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def get_projector_data(self, container):
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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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# Expand full_data to a list if it is not one.
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full_data = container.get_full_data() if isinstance(container, Collection) else [container.get_full_data()]
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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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# Reduce result to a single item or None if it was not a collection at
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# the beginning of the method.
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if isinstance(container, Collection):
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projector_data = data
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elif data:
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projector_data = data[0]
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else:
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projector_data = None
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return projector_data
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