53 lines
2.2 KiB
Python
53 lines
2.2 KiB
Python
from ..core.exceptions import ProjectorException
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from ..utils.projector import ProjectorElement
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from .models import Assignment, AssignmentPoll
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class AssignmentSlide(ProjectorElement):
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"""
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Slide definitions for Assignment model.
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You can send a poll id to get a poll slide.
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"""
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name = 'assignments/assignment'
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def check_data(self):
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if not Assignment.objects.filter(pk=self.config_entry.get('id')).exists():
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raise ProjectorException('Election does not exist.')
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poll_id = self.config_entry.get('poll')
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if poll_id:
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# Poll slide.
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try:
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poll = AssignmentPoll.objects.get(pk=poll_id)
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except AssignmentPoll.DoesNotExist:
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raise ProjectorException('Poll does not exist.')
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if poll.assignment_id != self.config_entry.get('id'):
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raise ProjectorException('Assignment id and poll do not belong together.')
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def get_requirements(self, config_entry):
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try:
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assignment = Assignment.objects.get(pk=config_entry.get('id'))
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except Assignment.DoesNotExist:
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# Assignment does not exist. Just do nothing.
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pass
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else:
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yield assignment
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yield assignment.agenda_item
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if not config_entry.get('poll'):
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# Assignment detail slide. Yield user instances of current
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# candidates (i. e. future poll participants) and elected
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# persons (i. e. former poll participants).
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for user in assignment.related_users.all():
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yield user
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else:
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# Assignment poll slide. Yield user instances of the
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# participants of all polls.
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for poll in assignment.polls.all().prefetch_related('options'):
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for option in poll.options.all():
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yield option.candidate
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def need_full_update_for_this(self, collection_element):
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# Full update if assignment changes because then we may have new
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# candidates and therefor need new users.
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return collection_element.collection_string == Assignment.get_collection_string()
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