Upload part 3

part3/phonebook/models/phonebook.js

@@ -0,0 +1,37 @@
+const mongoose = require('mongoose')
+const dotenv = require('dotenv')
+
+dotenv.config()
+
+const url =
+  `${process.env.MONGODB_URI}`
+console.log('connecting to', url)
+mongoose.set('strictQuery',false)
+mongoose.connect(url).then(() => {    console.log('connected to MongoDB')  })  .catch((error) => {    console.log('error connecting to MongoDB:', error.message)  })
+
+const phonebookSchema = new mongoose.Schema({
+  name: {
+    type: String,
+    minlength: 3,
+    required: true,
+  },
+  number: {
+    type: String,
+    validate: {
+      validator: (v) => /^\d{2}-\d{6,}|\d{3}-\d{5,}|(?<!-)\d{8,}$/.test(v),
+      message: (props) => `\`${props.value}\` is not a valid phone number.`,
+    },
+    minlength: 8,
+    required: true,
+  },
+})
+
+phonebookSchema.set('toJSON', {
+  transform: (document, returnedObject) => {
+    returnedObject.id = returnedObject._id.toString()
+    delete returnedObject._id
+    delete returnedObject.__v
+  }
+})
+
+module.exports = mongoose.model('Phonebook', phonebookSchema)