Files
breccia-mapper/people/views/network.py
2020-04-17 16:03:11 +01:00

80 lines
2.4 KiB
Python

"""
Views for displaying networks of :class:`People` and :class:`Relationship`s.
"""
from django.contrib.auth.mixins import LoginRequiredMixin
from django.db.models import F, Q
from django.forms import ValidationError
from django.utils import timezone
from django.views.generic import FormView
from people import forms, models, serializers
class NetworkView(LoginRequiredMixin, FormView):
"""
View to display relationship network.
"""
template_name = 'people/network.html'
form_class = forms.NetworkFilterForm
def get_form_kwargs(self):
"""
Add GET params to form data.
"""
kwargs = super().get_form_kwargs()
if self.request.method == 'GET':
if 'data' in kwargs:
kwargs['data'].update(self.request.GET)
else:
kwargs['data'] = self.request.GET
return kwargs
def get_context_data(self, **kwargs):
"""
Add filtered QuerySets of :class:`Person` and :class:`Relationship` to the context.
"""
context = super().get_context_data(**kwargs)
form: forms.NetworkFilterForm = context['form']
if not form.is_valid():
raise ValidationError
at_time = timezone.now()
relationship_answerset_set = models.RelationshipAnswerSet.objects.filter(
Q(replaced_timestamp__gt=at_time) | Q(replaced_timestamp__isnull=True),
timestamp__lte=at_time
)
# Filter answers to relationship questions
for field, values in form.cleaned_data.items():
if field.startswith('question_') and values:
relationship_answerset_set = relationship_answerset_set.filter(
question_answers__in=values
)
context['person_set'] = serializers.PersonSerializer(
models.Person.objects.all(),
many=True
).data
context['relationship_set'] = serializers.RelationshipSerializer(
models.Relationship.objects.filter(
pk__in=relationship_answerset_set.values_list('relationship', flat=True)
),
many=True
).data
return context
def form_valid(self, form):
try:
return self.render_to_response(self.get_context_data())
except ValidationError:
return self.form_invalid(form)