slugify in model

.eslintrc.json

@@ -9,6 +9,7 @@
       }
     ],
     "no-console": "off",
-    "no-underscore-dangle": ["warn", { "allow": ["_id"] }]
+    "no-underscore-dangle": ["warn", { "allow": ["_id"] }],
+    "func-names": "off"
   }
 }

models/Todo.js

@@ -2,7 +2,7 @@ const mongoose = require('mongoose');
 
 const { Schema } = mongoose;
 
-const todoSchema = Schema({
+const TodoSchema = Schema({
   text: {
     type: String,
     required: true,
@@ -11,4 +11,4 @@ const todoSchema = Schema({
   completed: { type: Boolean, default: false },
 });
 
-mongoose.model('Todo', todoSchema);
+mongoose.model('Todo', TodoSchema);

models/TodoList.js

@@ -1,11 +1,13 @@
 const mongoose = require('mongoose');
+const slugify = require('slugify');
 
 const { Schema } = mongoose;
 
-const todoListSchema = Schema({
+const TodoListSchema = Schema({
   name: {
     type: String,
     required: true,
+    lowercase: true,
   },
   slug: {
     type: String,
@@ -14,4 +16,15 @@ const todoListSchema = Schema({
   todos: [{ type: Schema.Types.ObjectId, ref: 'Todo' }],
 });
 
-mongoose.model('TodoList', todoListSchema);
+TodoListSchema.pre('validate', function (next) {
+  if (!this.slug) {
+    this.slugify();
+  }
+  next();
+});
+
+TodoListSchema.methods.slugify = function () {
+  this.slug = slugify(this.name);
+};
+
+mongoose.model('TodoList', TodoListSchema);

routes/lists.js

@@ -1,6 +1,5 @@
 const express = require('express');
 const mongoose = require('mongoose');
-const slugify = require('slugify');
 
 const router = express.Router();
 
@@ -27,7 +26,6 @@ router.post(
   asyncHelper(async (req, res) => {
     const { name } = req.body;
     const newList = new TodoList({ name });
-    newList.slug = slugify(name);
     await newList.save();
     res.json({ success: true });
   }),