猫鼬独特的属性仍然允许我保存到数据库

Question

我假设在字段中添加unique：true将停止使用相同的值保存到数据库。但是即时消息仍然允许这样做。

“猫鼬”：“ ^ 5.4.19”，

const SessionSchema = new Schema({

    jobId: {
        type: String,
        required: false,
        unique: true,
        index: true,

    },
    productId: {
        type: String,
        required: true,
    },
    status: {
        type: String,
        default: "Pending",
    },
    mode: {
        type: String,
        default: "authentication",
    },
    result: {
        type: Schema.Types.Mixed,
    },
    requests: [RequestSchema],
    callback_at: {
        type: Date,
    },

}, {
        timestamps: { createdAt: "created_at", updatedAt: "updated_at" },
    });

我已经尝试删除并重新创建集合。参见下图，我可以使用相同的jobId创建1的新会话。

public store = async (req: Request, res: Response): Promise<any> => {

        const input = req.body;

        let session = new Session({
            productId: input.productId,
            jobId: input.jobId,
        });

        try {

            session = await session.save();

            const response = {
                success: true,
                status: 201,
                data: { session },
                message: "SESSION CREATED",
            };


            return res.status(response.status).json(response);

        } catch (err) {

            const response = {
                success: false,
                status: 500,
                errors: [],
                message: "UNEXPECTED SESSION ERROR",
            };

            if (err.code === 11000) {
                response.errors.push({
                    code: 11000,
                    message: "Duplicate key error jobId",
                });
            }


            return res.status(response.status).json(response);
        }

db.sessions.getIndex（）;

[
    {
        "v" : 2,
        "key" : {
            "_id" : 1
        },
        "name" : "_id_",
        "ns" : "myDB.sessions"
    }
]

Answer 1

您必须了解，唯一是架构中的索引配置选项。

例如，如果users集合在上没有唯一索引userName，那么您需要等待索引建立之后才能开始依赖它。

 const user = new mongoose.Schema({
    userName: { type: 'String', unique: true },

  });

    const User = db.model('User', user);

      const doc = new User({
        userName: 'Bob'
      });

      return User.init() // `User.init()` returns a promise that is fulfilled when all indexes are done
        .then(() => User.create(doc))
        .then(() => User.create({ userName: 'Bob' }));
    }