上传文件至 '后端/fridge'

后端/fridge/admin.py

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+from django.contrib import admin
+
+# Register your models here.

后端/fridge/apps.py

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+from django.apps import AppConfig
+
+
+class FridgeConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'fridge'

后端/fridge/models.py

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+from django.db import models
+from general.models import *
+
+
+class FoodStock(models.Model):
+
+    type = models.ForeignKey(FoodType, on_delete= models.CASCADE)
+    amount = models.IntegerField(default=1)
+    unit = models.CharField(max_length=15,default='个')
+    percentage = models.IntegerField(default=100)
+    date = models.DateTimeField(auto_now_add=True)
+    owner_id = models.CharField(max_length=40)
+    is_active = models.BooleanField(default=True)

后端/fridge/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

后端/fridge/urls.py

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+"""yicanyishi URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/3.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import path, include
+from . import views
+
+
+urlpatterns = [
+    path('new-food/', views.add_new_food),
+    path('search/', views.search_food_type),
+    path('food-stock/', views.get_food_stock),
+    path('food-stock/change/', views.change_food_stock)
+]

后端/fridge/views.py

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+from django.db.models import Q
+from fridge.models import *
+from general.models import *
+from general.views import *
+from datetime import datetime, timedelta
+
+
+def add_new_food(request):
+    openid = request.META['HTTP_X_WX_OPENID']
+    name = request.POST['name']
+    kind = request.POST['kind']
+    amount = request.POST['amount']
+    unit = request.POST['unit']
+    food_type = FoodType.objects.get(name=name, kind=kind)
+    obj = FoodStock.objects.create(type=food_type, amount=amount, unit=unit, owner_id=openid)
+    obj.date += timedelta(hours=8)
+    obj.save()
+    return JsonResponse({'message': "success"})
+
+
+def search_food_type(request):
+    content = request.GET['content']
+    print(content)
+    results = FoodType.objects.filter(Q(name__contains=content) | Q(kind__contains=content)).values()
+    results = process_json(results)
+    return JsonResponse({'result': results})
+
+
+def get_food_stock(request):
+    openid = request.META['HTTP_X_WX_OPENID']
+    day_limit = int(request.GET['day_limit'])
+    results = FoodStock.objects.filter(owner_id=openid, is_active=1).values()
+    for item in results:
+        del item['owner_id']
+        del item['is_active']
+        item['kind'] = FoodType.objects.get(id=item['type_id']).kind
+        item['name'] = FoodType.objects.get(id=item['type_id']).name
+        item['days'] = (datetime.now()+timedelta(hours=8)-item['date']).days
+        item['date'] = str(item['date'])[:16]
+        item['outdated'] = 1 if item['days'] >= day_limit else 0
+        del item['type_id']
+    results = process_json(results)
+    return JsonResponse({'result': results})
+
+
+def change_food_stock(request):
+    openid = request.META['HTTP_X_WX_OPENID']
+    stock_id = request.POST['id']
+    new_percentage = request.POST['percentage']
+    stock = FoodStock.objects.filter(id=stock_id)
+    stock.update(percentage=new_percentage)
+    if new_percentage == '0':
+        stock.update(is_active=0)
+    return JsonResponse({'message': 'Successfully updated!'})
+
+
+