mongoose-hydrate-populated-data
npm i --save mongoose-hydrate-populated-data
State: model has relation with collection1 and collection2, like:
import { model, Schema } from 'mongoose'
const mySchema: Schema<MyDocument> = new Schema({
fieldName1: {
type: Schema.Types.ObjectId,
ref: collection1,
required: false,
index: true
},
fieldName2: {
type: Schema.Types.ObjectId,
ref: collection2,
required: true,
index: true
},
})-
Use
populatingLookupPreserveNullQueryfor collection1,- because model may have null in collection1 reference due to
required: false.
- because model may have null in collection1 reference due to
-
Use
populatingLookupQueryfor collection2,- because model cannot have null in collection2 reference due to
required: true.
- because model cannot have null in collection2 reference due to
import { FilterQuery } from 'mongoose'
import { populatingLookupPreserveNullQuery, populatingLookupQuery, hydratePopulated } from 'mongoose-hydrate-populated-data'
const records = await model.aggregate([
{
$match: FilterQuery<any>
},
...populatingLookupPreserveNullQuery(collection1, fieldName1),
...populatingLookupQuery(collection2, fieldName2),
])
records.map((record) => hydratePopulated(model, record, [fieldName1, fieldName2]))
