所以我有这种模型
const vetSchema = new mongoose.Schema({
username: {type: String, required: true, trim: true, unique: true},
email: {type: String, unique: true, trim: true,},
expYear: {type: Number},
KTP: {type: String, unique: true, trim: true},
cert_id: {type: String, unique: true, trim: true, select: false},
})
const clinicSchema = new mongoose.Schema({
vet: [{type: mongoose.Schema.Types.ObjectID, ref: 'vet'}],
)}
我要做的是按用户名查找兽医,该兽医ID不基于诊所ID包含在诊所中,要查询的查询是{username: {$regex: (?i)${keyword}.*}}
例如,我们有此数据
Clinic = [{
"_id" : ObjectId("5e57a45836d300b188f4444a"),
"vet": [ObjectId("5e0742fc9d4b20100f89b626"),ObjectId("5e53698fd2b9ee43e7693e01")]
}]
Vet = [
{
"_id" : ObjectId("5e0742fc9d4b20100f89b626"),
"username": "VetClinic"
},
{
"_id" : ObjectId("5e55df62576bc9811877033e"),
"username": "VetNotClinic"
},
{
"_id" : ObjectId("5e53698fd2b9ee43e7693e01"),
"username": "VetClinic"
},
]
我想要的是,如果我发现Vet
只显示VetNotClinic
,因为VetClinic
包含在诊所的ID中,是否有很好的查询/汇总?
答案 0 :(得分:0)
您可以使用$nin
来查询字段“不在数组中”的位置
Vet.find({
username: {$regex: (?i)${keyword}.*},
_id: {$nin: clinic.vet}
})