gault-millau/apps/news/serializers.py
2019-12-10 15:39:53 +03:00

302 lines
9.1 KiB
Python

"""News app common serializers."""
from django.utils.translation import gettext_lazy as _
from rest_framework import serializers
from rest_framework.fields import SerializerMethodField
from account.serializers.common import UserBaseSerializer
from gallery.models import Image
from main.models import SiteSettings
from location import models as location_models
from location.serializers import CountrySimpleSerializer, AddressBaseSerializer
from news import models
from tag.serializers import TagBaseSerializer
from utils import exceptions as utils_exceptions
from utils.serializers import (TranslatedField, ProjectModelSerializer,
FavoritesCreateSerializer, ImageBaseSerializer, CarouselCreateSerializer)
class AgendaSerializer(ProjectModelSerializer):
event_datetime = serializers.DateTimeField()
address = AddressBaseSerializer()
content_translated = TranslatedField()
class Meta:
"""Meta class."""
model = models.Agenda
fields = (
'id',
'event_datetime',
'address',
'content_translated'
)
class NewsBannerSerializer(ProjectModelSerializer):
title_translated = TranslatedField()
image_url = serializers.URLField()
content_url = serializers.URLField()
class Meta:
"""Meta class."""
model = models.NewsBanner
fields = (
'id',
'title_translated',
'image_url',
'content_url'
)
class NewsTypeSerializer(serializers.ModelSerializer):
"""News type serializer."""
class Meta:
"""Meta class."""
model = models.NewsType
fields = ('id', 'name')
class NewsBaseSerializer(ProjectModelSerializer):
"""Base serializer for News model."""
title_translated = TranslatedField()
subtitle_translated = TranslatedField()
news_type = NewsTypeSerializer(read_only=True)
tags = TagBaseSerializer(read_only=True, many=True, source='visible_tags')
in_favorites = serializers.BooleanField(allow_null=True, read_only=True)
view_counter = serializers.IntegerField(read_only=True)
class Meta:
"""Meta class."""
model = models.News
fields = (
'id',
'title_translated',
'subtitle_translated',
'is_highlighted',
'news_type',
'tags',
'slug',
'view_counter',
)
class NewsSimilarListSerializer(NewsBaseSerializer):
"""List serializer for News model."""
preview_image_url = serializers.URLField()
class Meta(NewsBaseSerializer.Meta):
"""Meta class."""
fields = NewsBaseSerializer.Meta.fields + (
'preview_image_url',
)
class NewsListSerializer(NewsBaseSerializer):
"""List serializer for News model."""
image = ImageBaseSerializer(source='crop_main_image', allow_null=True)
class Meta(NewsBaseSerializer.Meta):
"""Meta class."""
fields = NewsBaseSerializer.Meta.fields + (
'image',
)
class NewsDetailSerializer(NewsBaseSerializer):
"""News detail serializer."""
description_translated = TranslatedField()
country = CountrySimpleSerializer(read_only=True)
author = UserBaseSerializer(source='created_by', read_only=True)
state_display = serializers.CharField(source='get_state_display',
read_only=True)
gallery = ImageBaseSerializer(read_only=True, source='crop_gallery', many=True)
class Meta(NewsBaseSerializer.Meta):
"""Meta class."""
fields = NewsBaseSerializer.Meta.fields + (
'description_translated',
'start',
'end',
'is_publish',
'state',
'state_display',
'author',
'country',
'gallery',
)
class NewsDetailWebSerializer(NewsDetailSerializer):
"""News detail serializer for web users.."""
same_theme = SerializerMethodField()
should_read = SerializerMethodField()
agenda = AgendaSerializer()
banner = NewsBannerSerializer()
class Meta(NewsDetailSerializer.Meta):
"""Meta class."""
fields = NewsDetailSerializer.Meta.fields + (
'same_theme',
'should_read',
'agenda',
'banner',
)
def get_same_theme(self, obj):
return NewsSimilarListSerializer(obj.same_theme(self.context['request'].user), many=True, read_only=True).data
def get_should_read(self, obj):
return NewsSimilarListSerializer(obj.should_read(self.context['request'].user), many=True, read_only=True).data
class NewsBackOfficeBaseSerializer(NewsBaseSerializer):
"""News back office base serializer."""
is_published = serializers.BooleanField(source='is_publish', read_only=True)
class Meta(NewsBaseSerializer.Meta):
"""Meta class."""
fields = NewsBaseSerializer.Meta.fields + (
'title',
'backoffice_title',
'subtitle',
'is_published',
)
extra_kwargs = {
'backoffice_title': {'allow_null': False},
}
class NewsBackOfficeDetailSerializer(NewsBackOfficeBaseSerializer,
NewsDetailSerializer):
"""News detail serializer for back-office users."""
news_type_id = serializers.PrimaryKeyRelatedField(
source='news_type', write_only=True,
queryset=models.NewsType.objects.all())
country_id = serializers.PrimaryKeyRelatedField(
source='country', write_only=True,
queryset=location_models.Country.objects.all())
site_id = serializers.PrimaryKeyRelatedField(
source='site', write_only=True,
queryset=SiteSettings.objects.all())
template_display = serializers.CharField(source='get_template_display',
read_only=True)
class Meta(NewsBackOfficeBaseSerializer.Meta, NewsDetailSerializer.Meta):
"""Meta class."""
fields = NewsBackOfficeBaseSerializer.Meta.fields + \
NewsDetailSerializer.Meta.fields + (
'description',
'news_type_id',
'country_id',
'site_id',
'template',
'template_display',
'is_international',
)
class NewsBackOfficeGallerySerializer(serializers.ModelSerializer):
"""Serializer class for model NewsGallery."""
class Meta:
"""Meta class"""
model = models.NewsGallery
fields = [
'id',
'is_main',
]
def get_request_kwargs(self):
"""Get url kwargs from request."""
return self.context.get('request').parser_context.get('kwargs')
def validate(self, attrs):
"""Override validate method."""
news_pk = self.get_request_kwargs().get('pk')
image_id = self.get_request_kwargs().get('image_id')
news_qs = models.News.objects.filter(pk=news_pk)
image_qs = Image.objects.filter(id=image_id)
if not news_qs.exists():
raise serializers.ValidationError({'detail': _('News not found')})
if not image_qs.exists():
raise serializers.ValidationError({'detail': _('Image not found')})
news = news_qs.first()
image = image_qs.first()
if image in news.gallery.all():
raise serializers.ValidationError({'detail': _('Image is already added.')})
attrs['news'] = news
attrs['image'] = image
return attrs
class NewsFavoritesCreateSerializer(FavoritesCreateSerializer):
"""Serializer to favorite object w/ model News."""
def validate(self, attrs):
"""Overridden validate method"""
# Check establishment object
news_qs = models.News.objects.filter(slug=self.slug)
# Check establishment obj by slug from lookup_kwarg
if not news_qs.exists():
raise serializers.ValidationError({'detail': _('Object not found.')})
else:
news = news_qs.first()
# Check existence in favorites
if news.favorites.filter(user=self.user).exists():
raise utils_exceptions.FavoritesError()
attrs['news'] = news
return attrs
def create(self, validated_data, *args, **kwargs):
"""Overridden create method"""
validated_data.update({
'user': self.user,
'content_object': validated_data.pop('news')
})
return super().create(validated_data)
class NewsCarouselCreateSerializer(CarouselCreateSerializer):
"""Serializer to carousel object w/ model News."""
def validate(self, attrs):
news = models.News.objects.filter(pk=self.pk).first()
if not news:
raise serializers.ValidationError({'detail': _('Object not found.')})
if news.carousels.exists():
raise utils_exceptions.CarouselError()
attrs['news'] = news
return attrs
def create(self, validated_data, *args, **kwargs):
validated_data.update({
'content_object': validated_data.pop('news')
})
return super().create(validated_data)