gault-millau/apps/collection/serializers/back.py
2019-12-10 16:24:37 +03:00

146 lines
5.1 KiB
Python

from rest_framework import serializers
from collection import models
from collection.serializers.common import CollectionBaseSerializer
from establishment.models import Establishment
from location.models import Country
from location.serializers import CountrySimpleSerializer
from product.models import Product
from utils.exceptions import (
BindingObjectNotFound, RemovedBindingObjectNotFound, ObjectAlreadyAdded
)
class CollectionBackOfficeSerializer(CollectionBaseSerializer):
"""Collection back serializer."""
country_id = serializers.PrimaryKeyRelatedField(
source='country', write_only=True,
queryset=Country.objects.all())
collection_type_display = serializers.CharField(
source='get_collection_type_display', read_only=True)
country = CountrySimpleSerializer(read_only=True)
count_related_objects = serializers.IntegerField(read_only=True)
related_object_names = serializers.ListField(read_only=True)
class Meta:
model = models.Collection
fields = CollectionBaseSerializer.Meta.fields + [
'id',
'name',
'collection_type',
'collection_type_display',
'is_publish',
'on_top',
'country',
'country_id',
'block_size',
'description',
'slug',
'start',
'end',
'count_related_objects',
'related_object_names',
]
class CollectionBindObjectSerializer(serializers.Serializer):
"""Serializer for binding collection and objects"""
ESTABLISHMENT = 'establishment'
PRODUCT = 'product'
TYPE_CHOICES = (
(ESTABLISHMENT, 'Establishment'),
(PRODUCT, 'Product'),
)
type = serializers.ChoiceField(TYPE_CHOICES)
object_id = serializers.IntegerField()
def validate(self, attrs):
view = self.context.get('view')
request = self.context.get('request')
obj_type = attrs.get('type')
obj_id = attrs.get('object_id')
collection = view.get_object()
attrs['collection'] = collection
if obj_type == self.ESTABLISHMENT:
establishment = Establishment.objects.filter(pk=obj_id).\
first()
if not establishment:
raise BindingObjectNotFound()
if request.method == 'POST' and collection.establishments.\
filter(pk=establishment.pk).exists():
raise ObjectAlreadyAdded()
if request.method == 'DELETE' and not collection.\
establishments.filter(pk=establishment.pk).\
exists():
raise RemovedBindingObjectNotFound()
attrs['related_object'] = establishment
elif obj_type == self.PRODUCT:
product = Product.objects.filter(pk=obj_id).first()
if not product:
raise BindingObjectNotFound()
if request.method == 'POST' and collection.products.\
filter(pk=product.pk).exists():
raise ObjectAlreadyAdded()
if request.method == 'DELETE' and not collection.products.\
filter(pk=product.pk).exists():
raise RemovedBindingObjectNotFound()
attrs['related_object'] = product
return attrs
class GuideBindObjectSerializer(serializers.Serializer):
"""Serializer for binding collection and objects"""
ESTABLISHMENT = 'establishment'
PRODUCT = 'product'
TYPE_CHOICES = (
(ESTABLISHMENT, 'Establishment'),
(PRODUCT, 'Product'),
)
type = serializers.ChoiceField(TYPE_CHOICES)
object_id = serializers.IntegerField()
def validate(self, attrs):
view = self.context.get('view')
request = self.context.get('request')
obj_type = attrs.get('type')
obj_id = attrs.get('object_id')
collection = view.get_object()
attrs['collection'] = collection
if obj_type == self.ESTABLISHMENT:
establishment = Establishment.objects.filter(pk=obj_id).\
first()
if not establishment:
raise BindingObjectNotFound()
if request.method == 'POST' and collection.establishments.\
filter(pk=establishment.pk).exists():
raise ObjectAlreadyAdded()
if request.method == 'DELETE' and not collection.\
establishments.filter(pk=establishment.pk).\
exists():
raise RemovedBindingObjectNotFound()
attrs['related_object'] = establishment
elif obj_type == self.PRODUCT:
product = Product.objects.filter(pk=obj_id).first()
if not product:
raise BindingObjectNotFound()
if request.method == 'POST' and collection.products.\
filter(pk=product.pk).exists():
raise ObjectAlreadyAdded()
if request.method == 'DELETE' and not collection.products.\
filter(pk=product.pk).exists():
raise RemovedBindingObjectNotFound()
attrs['related_object'] = product
return attrs