Question

我正在使用Mongoose 5.1.7，并尝试在定义的架构中跨多个文本索引创建复合索引。这是我的架构定义：

const mongoose = require('mongoose');

const alumniSchema = mongoose.Schema({
  firstName: {
    type: [String],
    required: true
  },
  lastName: {
    type: [String],
    required: true
  },
  classYear: {
    type: Number,
    required: true
  },
  photoURL: {
    type: String,
  },
  education: [
    {
      school: {
        type: String,
        required: true
      },
      gradYear: {
        type: Number,
        required: true
      },
      degreeType: String,
      degreeSubject: String,
    }
  ],
  jobs: [
    {
      employer: {
        type: String,
        required: true
      },
      position: String,
      startDate: Date,
      endDate: Date,
      isCurrent: Boolean
    }
  ],
  contactInfo: {
    phoneNumber: {
      type: String,
    },
    email: {
      type: String,
    }
  },
})

alumniSchema.index({ firstName: 'text', lastName : 'text', email: 'text' });

module.exports = mongoose.model('Alumni', alumniSchema);

启动服务器时，出现以下错误：

MongoError: Index: { v: 2, key: { _fts: "text", _ftsx: 1 }, name: "firstName_text_lastName_text_email_text", ns: "5b3be578c0c6e317f7c1bc2b_test.alumnis", background: true, weights: { email: 1, firstName: 1, lastName: 1 }, default_language: "english", language_override: "language", textIndexVersion: 3 } already exists with different options: { v: 2, key: { _fts: "text", _ftsx: 1 }, name: "firstName_text_lastName_text_classYear_text_education.school_text", background: true, weights: { classYear: 1, education.school: 1, firstName: 1, lastName: 1 }, default_language: "english", language_override: "language", ns: "5b3be578c0c6e317f7c1bc2b_test.alumnis", textIndexVersion: 3 }

我已经搞混了一段时间了，显然以前创建了一个索引。但是，当我使用mongo shell检查当前设置的索引时，找不到错误消息引用的索引“ firstName_text_lastName_text_classYear_text_education.school_text”：

> db
test
> db.collection.getIndexes()
[ ]

我陷入僵局-我不确定是否创建索引错误，或者是否应该删除索引（Mongoose本身不支持dropIndex（）函数）。

还有其他人处理过这个问题吗？谢谢！

Answer 1

看起来像Mongoose在运行时动态创建索引。我的诀窍是添加：

var Alumni = mongoose.model('Alumni', alumniSchema);
Alumni.collection.dropIndex('firstName_text_lastName_text_classYear_text_education.school_text', function(err, result) {
    if (err) {
        console.log('Error dropping index!', err);
    }
});

，然后重新启动服务器。

当我能够将索引更改为我想要的任何值时。注意，每次我想更新索引时，我仍然需要添加以上代码段并重新启动服务器。

猫鼬/ Mongodb：索引已存在具有不同的选项

1 个答案: