Question

我无法将我的产品对象推入购物车阵列中，我不知道该怎么办。有人知道如何解决吗？我收到此错误：无法为不可为空的字段Mutation.addToShopping返回null。

用户模型：



def take_attendance(request, id):
    schedule = get_object_or_404(ScheduleTable, pk=id)
    userlist = User.objects.filter(college = schedule.college).filter(is_student=True).filter(section=schedule.section)
    context = {
               "userlist":userlist,
               "schedule_name": schedule,
    }
    return render(request, "take.html", context )


def AttendanceStore(request, id):
    sch = get_object_or_404(ScheduleTable, pk=id)
    userlist = User.objects.all().filter(college=sch.college).filter(section=sch.section)
    attendance = OnlineAttendanceTable()
    insert_list = []
    for user in userlist:
        userstatus = request.POST.get(str(user.username))
        attendance.schedule = sch.name
        attendance.usn = user.username
        attendance.status = userstatus
        insert_list.append(attendance)
        print(insert_list)
        OnlineAttendanceTable.objects.bulk_create()

    return render(request, "submitattendance.html" )

解析器：

import mongoose from 'mongoose';

const userSchema = new mongoose.Schema({
    name: {
        type: String,
        required: true,
        unique: true
    },
    email: {
        type: String,
        required: true,
        unique: true
    },
    password: {
        type: String,
        required: true
    },
    cart: {
        type: Array,
    }
});

userSchema.set('toObjenct', { viruals: true });

var Users = mongoose.model('User', userSchema);

module.exports = Users;

模式：

addToShopping: async (parent, args, context, info) => {
            const userId = getUserId(context);
            const product = await Products.findById(args.id);
            console.log(product)
            const user = await Users.findByIdAndUpdate(userId, { $push: { cart: product } }, { new: true }).exec()
                .catch((err) => {
                    console.log(err)
                });
            return user;
        },

Answer 1

Tnx我找到了答案：）

addToShopping: async (parent, args, context, info) => {
            const userId = await getUserId(context);
            const product = await Products.findById(args.id);
            const values = {};
            Object.entries(args).forEach(([key, value]) => {
                if (value) {
                    values[key] = value;
                }
            });
            const user = await Users.findByIdAndUpdate(userId, {
                $set: values,
                $push: {
                    cart: {
                        id: args.id,
                        name: product.name,
                        type: product.type,
                        price: product.price,
                        quantity: product.quantity
                    }
                }
            }, {
                new: true,
                safe: true,
                upsert: true
            }).exec()
                .catch((err) => {
                    console.log(err)
                });
            return user;

无法将对象推送到Graphql中的数组

1 个答案: