在Mongoose Schema中使用多个值的唯一文档

I have a special case where our collection needs to make sure each document is unique based on a combination of the email address, and the sweepstakes_id. I've looked all over, but I can't find how to accomplish this type of validation.

我有一个特殊情况，我们的集合需要根据电子邮件地址和sweepstakes_id的组合确保每个文档都是唯一的。我看了一遍，但我找不到如何完成这种类型的验证。

Schema definition:

架构定义：

var submissionSchema = new Schema({
    client_id: {
        type: Schema.Types.ObjectId,
        ref: 'Client',
        index: true
    },
    sweepstakes_id: {
        type: Schema.Types.ObjectId,
        ref: 'Sweepstakes',
        index: true
    },
    email: {
        type: String,
        index: true
   },
   data: {
        type: Schema.Types.Mixed,
        default: []
   }
});

1 个解决方案

#1

You can enforce that using a unique index that includes both fields:

您可以使用包含两个字段的唯一索引来强制执行该操作：

submissionSchema.index({ email: 1, sweepstakes_id: 1 }, { unique: true });