直接在 MongoDB 上运行以下文本搜索不会产生任何问题:
db.getCollection('schools').find({
$text:
{
$search: 'some query string',
$caseSensitive: false,
$diacriticSensitive: true
}
}, {score: {$meta: "textScore"}}).sort({score:{$meta:"textScore"}})
然而,当尝试使用 native NodeJS driver 运行相同的查询时:
function getSchools(filter) {
return new Promise(function (resolve, reject) {
MongoClient.connect('mongodb://localhost:60001', function(err, client) {
const collection = client.db('schools').collection('schools');
collection.find({
$text:
{
$search: filter,
$caseSensitive: false,
$diacriticSensitive: true
}
}, {score: {$meta: "textScore"}}).sort({score:{$meta:"textScore"}}).toArray(function(err, docs) {
if (err) return reject(err);
resolve(docs);
});
});
});
}
我收到以下错误:
MongoError: must have $meta projection for all $meta sort keys
我在这里做错了什么?
最佳答案
好的,根据this bug自版本 3.0.0 find
和 findOne
no longer support fields
参数和查询需要重写如下:
collection.find({
$text:
{
$search: filter,
$caseSensitive: false,
$diacriticSensitive: true
}
})
.project({ score: { $meta: "textScore" } })
.sort({score:{$meta:"textScore"}})
关于node.js - 蒙哥错误: must have $meta projection for all $meta sort keys using Mongo DB Native NodeJS Driver,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48975707/