基于Django创建卡路里计算器

from django.shortcuts import render,redirect from django.http import HttpResponse from django.contrib.auth.models import User from .models import * from .forms import * from django.contrib import messages from django.contrib.auth import authenticate,login,logout from django.contrib.auth.decorators import login_required from .decorators import * from django.contrib.auth.models import Group from .filters import fooditemFilter # Create your views here. @login_required(login_url='login') @admin_only def home(request): breakfast=Category.objects.filter(name='breakfast')[0].fooditem_set.all()[:5] lunch=Category.objects.filter(name='lunch')[0].fooditem_set.all()[:5] dinner=Category.objects.filter(name='dinner')[0].fooditem_set.all()[:5] snacks=Category.objects.filter(name='snacks')[0].fooditem_set.all()[:5] customers=Customer.objects.all() context={'breakfast':breakfast, 'lunch':lunch, 'dinner':dinner, 'snacks':snacks, 'customers':customers, } return render(request,'main.html',context) @login_required(login_url='login') @allowed_users(allowed_roles=['admin']) def fooditem(request): breakfast=Category.objects.filter(name='breakfast')[0].fooditem_set.all() bcnt=breakfast.count() lunch=Category.objects.filter(name='lunch')[0].fooditem_set.all() lcnt=lunch.count() dinner=Category.objects.filter(name='dinner')[0].fooditem_set.all() dcnt=dinner.count() snacks=Category.objects.filter(name='snacks')[0].fooditem_set.all() scnt=snacks.count() context={'breakfast':breakfast, 'bcnt':bcnt, 'lcnt':lcnt, 'scnt':scnt, 'dcnt':dcnt, 'lunch':lunch, 'dinner':dinner, 'snacks':snacks, } return render(request,'fooditem.html',context) @login_required(login_url='login') @allowed_users(allowed_roles=['admin']) def createfooditem(request): form = fooditemForm() if request.method == 'POST': form = fooditemForm(request.POST) if form.is_valid(): form.save() return redirect('/') context={'form':form} return render(request,'createfooditem.html',context) @unauthorized_user def registerPage(request): form=createUserForm() if request.method=='POST': form=createUserForm(request.POST) if form.is_valid(): user=form.save() username=form.cleaned_data.get('username') group=Group.objects.get(name='user') user.groups.add(group) email=form.cleaned_data.get('email') Customer.objects.create(user=user, name=username,email=email) messages.success(request,'Account created for '+username) return redirect('login') context={'form':form} return render(request,'register.html',context) @unauthorized_user def loginPage(request): if request.method=='POST': username=request.POST.get('username') password=request.POST.get('password') user=authenticate(request,username=username,password=password) if user is not None: login(request,user) return redirect('home') else: messages.info(request,'username or password is invalid') return render(request,'login.html') @login_required(login_url='login') def logoutUser(request): logout(request) return redirect('login') def userPage(request): user=request.user cust=user.customer fooditems=Fooditem.objects.filter() myfilter = fooditemFilter(request.GET,queryset=fooditems) fooditems=myfilter.qs total=UserFooditem.objects.all() myfooditems=total.filter(customer=cust) cnt=myfooditems.count() querysetFood=[] for food in myfooditems: querysetFood.append(food.fooditem.all()) finalFoodItems=[] for items in querysetFood: for food_items in items: finalFoodItems.append(food_items) totalCalories=0 for foods in finalFoodItems: totalCalories+=foods.calorie CalorieLeft=2000-totalCalories context={'CalorieLeft':CalorieLeft,'totalCalories':totalCalories,'cnt':cnt,'foodlist':finalFoodItems,'fooditem':fooditems,'myfilter':myfilter} return render(request,'user.html',context) def addFooditem(request): user=request.user cust=user.customer if request.method=="POST": form =addUserFooditem(request.POST) if form.is_valid(): form.save() return redirect('/') form=addUserFooditem() context={'form':form} return render(request,'addUserFooditem.html',context)