在mongoose中填充数组
我怎样才能填充阵列上升帮助我 {id:5d92775ab93e250910838d98, 研讨会:[5D854EECFED0E2494B03E38,5d85533e56fa1c24588824ff], 上升:[ {id:5D8BD237F55E4326A4 FAF7D0,上升日期:2019-09-20T00:00:00.000Z}, {id:5D8BD250F55E4326A4 FAF7D1,上升日期:2019-09-20T00:00:00.000Z}, {id:5D8BD25F55E4326A4 FAF7D2,上升日期:2019-09-20T00:00:00.000Z}, {id:5D8BD26AF55E4326A4 FAF7D3,上升日期:2019-0920T00:00:00.000Z} ], 状态:正确, 用户:5d84f154d275fd125835b4ec } 我的模型: var mongoose=需要“mongoose”; var Schema=mongoose.Schema; var profileSchema=新模式{ 用户:{type:Schema.Types.ObjectId,ref:'user',必需:true}, 研讨会:[{type:Schema.Types.ObjectId,ref:'Seminar',required:false}], 上升:[{ascent:{type:Schema.Types.ObjectId,ref:'ascent',必需:false},dateAscent:{type:Date,必需:true,默认:Date.now}], 状态:{type:Boolean,默认值:true} }; module.exports=mongoose.model'Profile',profileSchema;在mongoose中填充数组,mongoose,mongoose-schema,mongoose-populate,Mongoose,Mongoose Schema,Mongoose Populate,我怎样才能填充阵列上升帮助我 {id:5d92775ab93e250910838d98, 研讨会:[5D854EECFED0E2494B03E38,5d85533e56fa1c24588824ff], 上升:[ {id:5D8BD237F55E4326A4 FAF7D0,上升日期:2019-09-20T00:00:00.000Z}, {id:5D8BD250F55E4326A4 FAF7D1,上升日期:2019-09-20T00:00:00.000Z}, {id:5D8BD25F55E4326A
有人能帮我怎么做吗?考虑分离定义提升模式,使其有自己的模型
const ascentSchema = new Schema({
dateAscent:{
type: Date,
required: true,
default: Date.now
}
})
module.exports = mongoose.model('Ascent',ascentSchema )
然后,您的配置文件架构将如下所示:
var profileSchema = new Schema({
user: { type: Schema.Types.ObjectId, ref: 'User', required: true },
seminars: [{ type: Schema.Types.ObjectId, ref: 'Seminar', required: false }],
ascents: [{type: Schema.Types.ObjectId, ref: 'Ascent'}],
status: { type: Boolean, default: true }
});
module.exports = mongoose.model('Profile', profileSchema);
要进行上升,您必须确保向上升数组添加有效的_ID
当您添加到新的上升文档时
在编写查询时,为了用相关文档填充Ascences数组
您可以这样做:
Profile.find().
populate({
path: 'ascents',
match: { }, //you can even filter the documents in the array using this match option
// Explicitly exclude `_id`
select: '-_id',
options: { limit: 5 } //Also limit the amount of documents returned
}).
exec();
让我知道这种方法是否有效。请记住,在添加新的Ascent文档时,必须将_id推送到ascents数组,该数组是relatProfile文档的一部分。查看文档您到底想要什么?如何查询和填充或如何定义模式?我想知道如何查询和填充?让我提供一个答案和一些建议