I am getting stuck here because I'm not sure how to set multiple ref's to an object to specify the objectid of it.
For example: (how can I specify the sender to be a Seller or it can be a User, also, what would be the best approach if there is for this situation)
const messageSchema = mongoose.Schema({
message: {
text: { type: String, required: true },
type: String, //type can be or 'message', 'image',
},
members: {
seller: {
type: mongoose.Schema.Types.ObjectId,
ref: "Seller",
required: true,
},
client: {
type: mongoose.Schema.Types.ObjectId,
ref: "User",
required: true,
},
},
sender: {
type: mongoose.Schema.Types.ObjectId,
ref: "User",
required: true,
},
readOn: { type: Date },
read: Boolean, //}, {
timestamps: true,
});
I want to be able to say:
sender: {
type: mongoose.Schema.Types.ObjectId,
ref: ["User", "Seller"],
required: true,
},
would this be possible? Thanks a lot in advance.
you can use refPath for dynamic referencing.
const messageSchema = mongoose.Schema({
sender_type: String // user or seller
sender: {
type: Schema.Types.ObjectId,
refPath: 'sender_type'
}
})
OR
you can use virtuals
const messageSchema = new mongoose.Schema({
...
sender: {
type: mongoose.Schema.Types.ObjectId,
required: true
},
...
},
{
toJSON: { virtuals: true }
});
Then define virtual schemas like this:
order_schema.virtual('User', {
ref: 'User', // Your User model name
localField: 'sender',
foreignField: '_id',
justOne: true
});
order_schema.virtual('Seller', {
ref: 'Seller',
localField: 'sender',
foreignField: '_id',
justOne: true
});
Then in the database operations define two populates:
Model.find(search_filter)
.populate('User')
.populate('Seller')