MEAN Cookbook

How to do it...

Let's follow these steps to add a few different model validations and a new virtual html property to our blog post schema:

1. First, let's update our /models/posts.js model configuration to add validations for required fields and minimum and maximum character lengths. We will also create a custom validation to not allow our blog post content that starts with a markdown header:

var mongoose = require('mongoose');var Schema = mongoose.Schema;function markdownValidator (value) {  var regex = new RegExp(/^#*\s/);  return !regex.test(value);}var postSchema = new Schema({  title:  { type: String, index: 'text', required: true, minlength: 5, maxlength: 64 },  content: { type: String, required: true, validate: [ markdownValidator, 'cannot ...