DeveloperandClaude Opus 4.6
94647e2b4b
主要优化: - templates/index.html: 220KB → 28KB，内联CSS/JS提取为静态文件 - menu/serializers.py: 修复 Order.ingredients_summary N+1 查询问题 - menu/services/dish_service.py: 移除多余查询，添加 only() 限制字段 - menu/views.py: 上传接口添加每分钟20次限流 - static/js/api.js: 统一API错误处理 - zhangmenu/settings.py: 添加Whitenoise压缩、Redis缓存支持、环境变量配置 - static/css/app.css, static/js/app.js: 提取的内联资源文件 - 新增 migrations, requirements.txt, .env.example Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
81 lines
2.9 KiB
Python
81 lines
2.9 KiB
Python
from django.db.models import Count
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from rest_framework import serializers
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from .models import Dish, DishCategory, Order
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class DishCategorySerializer(serializers.ModelSerializer):
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"""分类序列化器"""
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dish_count = serializers.IntegerField(read_only=True)
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class Meta:
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model = DishCategory
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fields = ['id', 'name', 'icon', 'order', 'dish_count']
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class DishSerializer(serializers.ModelSerializer):
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"""菜品序列化器"""
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category_name = serializers.CharField(source='category.name', read_only=True)
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category_id = serializers.IntegerField(write_only=True, required=False, allow_null=True)
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class Meta:
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model = Dish
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fields = ['id', 'name', 'category', 'category_name', 'category_id',
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'cover_image', 'description', 'ingredients', 'view_count',
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'created_at', 'updated_at']
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read_only_fields = ['created_at', 'updated_at', 'view_count']
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class OrderSerializer(serializers.ModelSerializer):
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"""订单序列化器"""
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dishes_detail = DishSerializer(source='dishes', many=True, read_only=True)
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ingredients_summary = serializers.SerializerMethodField()
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dish_ids = serializers.ListField(
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child=serializers.IntegerField(),
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write_only=True,
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required=False
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)
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class Meta:
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model = Order
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fields = ['id', 'name', 'dishes', 'dishes_detail', 'dish_ids',
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'status', 'party_date', 'participants',
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'created_at', 'completed_at', 'note', 'ingredients_summary', 'images']
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read_only_fields = ['created_at', 'completed_at']
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extra_kwargs = {
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'dishes': {'required': False}
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}
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def get_ingredients_summary(self, obj):
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# Compute in Python using prefetched dishes (avoids N+1)
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summary = {}
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for dish in obj.dishes.all():
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for ing in dish.ingredients:
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name = ing.get('name', '').strip()
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amount = ing.get('amount', '').strip()
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if name:
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if name in summary:
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if amount:
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summary[name] += f" + {amount}"
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else:
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summary[name] = amount
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return [{'name': k, 'amount': v} for k, v in summary.items()]
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def create(self, validated_data):
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dish_ids = validated_data.pop('dish_ids', [])
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order = Order.objects.create(**validated_data)
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if dish_ids:
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dishes = Dish.objects.filter(id__in=dish_ids)
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order.dishes.set(dishes)
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return order
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def update(self, instance, validated_data):
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dish_ids = validated_data.pop('dish_ids', None)
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for attr, value in validated_data.items():
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setattr(instance, attr, value)
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instance.save()
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if dish_ids is not None:
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dishes = Dish.objects.filter(id__in=dish_ids)
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instance.dishes.set(dishes)
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return instance
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