Video 116: Cascade Delete Tasks

task-manager/src/models/user.js

@@ -2,6 +2,7 @@ const mongoose = require('mongoose')
 const validator = require('validator')
 const bcrypt = require('bcryptjs')
 const jwt = require('jsonwebtoken')
+const Task = require('./task')
 
 const userSchema = new mongoose.Schema({
   name: {
@@ -102,6 +103,13 @@ userSchema.pre('save', async function(next) {
   next()
 })
 
+// Delete user tasks when user is removed
+userSchema.pre('remove', async function(next) {
+  const user = this
+  await Task.deleteMany({ owner: user._id })
+  next()
+})
+
 const User = mongoose.model('User', userSchema)
 
 module.exports = User