node.js - how to delete Mongoose document with references?

Question

I have 2 Schemas CategorySchema and ProductSchema : i have made a middleware in CategorySchema but it dosn't work here is the CategorySchema :

const mongoose = require('mongoose');

const CategorySchema = new mongoose.Schema({
  catName :{
    type : String,
    required : true,
 },
intro : {
    type : String,
    required : true
},
img : {
    type : String,
    required : true
    
},
products : {
    type : [{type : mongoose.Schema.Types.ObjectId, ref:"Product"}]
}
  });

CategorySchema.pre("deleteOne",function(next){
 const product =  mongoose.model("Product");
  product.deleteOne({_id : {$in : this.products}}).then(next());
    
    })
   module.exports = mongoose.model('Category',CategorySchema);

question from:https://stackoverflow.com/questions/65937981/how-to-delete-mongoose-document-with-references

Answer 1

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