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56 lines
1.8 KiB
56 lines
1.8 KiB
# -*- coding: utf-8 -*-
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#
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from django.utils.translation import ugettext_lazy as _
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from django.db.models import Prefetch
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from rest_framework import serializers
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from common.serializers import AdaptedBulkListSerializer
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from orgs.mixins.serializers import BulkOrgResourceModelSerializer
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from django.db.models import Count
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from ..models import User, UserGroup
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from .. import utils
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__all__ = [
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'UserGroupSerializer',
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]
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class UserGroupSerializer(BulkOrgResourceModelSerializer):
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users = serializers.PrimaryKeyRelatedField(
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required=False, many=True, queryset=User.objects, label=_('User'),
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# write_only=True, # group can return many to many on detail
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)
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class Meta:
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model = UserGroup
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list_serializer_class = AdaptedBulkListSerializer
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fields_mini = ['id', 'name']
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fields_small = fields_mini + [
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'comment', 'date_created', 'created_by'
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]
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fields = fields_mini + fields_small + [
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'users', 'users_amount',
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]
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extra_kwargs = {
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'created_by': {'label': _('Created by'), 'read_only': True},
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'users_amount': {'label': _('Users amount')},
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'id': {'label': _('ID')},
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}
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.set_fields_queryset()
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def set_fields_queryset(self):
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users_field = self.fields.get('users')
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if users_field:
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users_field.child_relation.queryset = utils.get_current_org_members()
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@classmethod
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def setup_eager_loading(cls, queryset):
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""" Perform necessary eager loading of data. """
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queryset = queryset.prefetch_related(
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Prefetch('users', queryset=User.objects.only('id'))
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).annotate(users_amount=Count('users'))
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return queryset
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