BB: Validation Plugin

by BratmanDu

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0-alpha1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/4.0.5/handlebars.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.validation/0.11.5/backbone-validation.js"></script>
<h1>Backbone Validation Ref</h1>

<script type="text/template" class="tmpl-person">
	<form action="" class="form-fields">
	<div>
		<label>Name</label>
		<input type="text" class="text-input" name="name"/>
		<span class="feedback"></span>
		<ul class="error">This is a required field</ul>
	</div>
	<div>
		<label>Age</label>
		<input type="text" class="text-input" name="age"/>
		<span class="feedback"></span>
		<ul class="error">This is a required field</ul>
	</div>
	<div>
		<label>Address</label>
		<input type="text" class="text-input" name="address" />
		<span class="feedback"></span>
		<ul class="error">This is a required field</ul>
	</div>
</form>
<br>
	<button class="btn  js-action--validate-keys">Validate keys - ['name', 'age']</button>
	<button class="btn  js-action--validate-key">Validate keys - ['address']</button>
</script>

SCSS

@import url(http://fonts.googleapis.com/css?family=Roboto:300,400,500);

* {
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
    font-family: Roboto;
    padding: 16px;
    line-height: 1.5;
    font-weight: normal;
    color: #ccc;
    background: #292929;
    font-size: 18px;
}

h1, h2, h3 {
    font-weight: normal;
}

.pg-heading {
    margin-bottom: 0;
}

h1 {
	margin-bottom: 20px;
	font-size: 28px;
}

a {
    color: #95baf6;
    transition: opacity .3s;
}

a:hover {
    opacity: 0.75;
}

div {
	margin-bottom: 8px;
}

input,
button{
    border: none;
    height: 40px;
    outline: none;
    padding: 0 8px;
}

button {
	margin-right: 8px;
	height: 50px;
}

input {
	width: 100%;
}

label {
	display: block;
}

button {
    padding: 0 16px;
    background: #2196F3;
    color: white;
    transition: background .3s;
		font-size: 18px;
		border-radius: 4px;
}

button:hover {
    background: #1E88E5;
}

button:active {
    background: #1976D2;
}

input[type=text] {
    transition: border-color .3s;
    border: 1px solid white;    
}

input ~ .error {
    color: red;
		display: none;
}

input.invalid ~ .error {
	display: block;
}

Babel + JSX

console.clear();

const currentName = 'Joe';

const Model = Backbone.Model.extend({
	validation: {
  	name: [{
    	required: true,
			minLength: 3,
			msg: 'Name must be at least 3 characters long'
    }, {
			required: true,
			maxLength: 20,
			msg: 'Name can be no longer than 20 characters long'
		}, {
			required: true,
			msg: 'Name already exists',
			fn: 'checkForDuplicateName'
		}],
    age: {
      range: [1, 80],
      required: true
    },
    address: {
    	minLength: 1,
    	msg: 'Address required',
      required: false
    }
  },
	
	checkForDuplicateName(name) {
		if(name === currentName) return 'error';	
	}
});

const View = Backbone.View.extend({

	template: Handlebars.compile( $('.tmpl-person').html() ),

	className: 'view',
	
	events: {
		'click .js-action--validate-keys': 'actionValidateKeysClicked',
		'click .js-action--validate-key': 'actionValidateKeyClicked'
	},
	
	initialize() {
		Backbone.Validation.bind(this);

		this.listenTo(this.model, {
			'validated': this.onModelValidated,
			'validated:valid': this.onModelValid,
			'validated:invalid': this.onModelInvalid,
			'invalid': this.onInvalid
		});
	},
	
	render() {
		this.$el.html(this.template(this.model.toJSON()));
		return this;
	},
	
	actionValidateKeysClicked(event) {
		event.preventDefault();
		
    console.log('actionValidateKeysClicked');
	  console.log('CURRENT NAME INPUT: ', this.$('input[name="name"]')[0].value);
    console.log('CURRENT AGE INPUT: ', this.$('input[name="age"]')[0].value);
    
		this.model.set({
			'name': this.$("input[name='name']")[0].value,
			'age': this.$("input[name='age']")[0].value
		});
		
		let isValid = this.model.isValid(['name', 'age']);
    
    console.log('validate keys clicked, this model: ', this.model);  
		
		if(isValid) {
			console.log('isValid');
		}
	},
	
	actionValidateKeyClicked(event) {
		event.preventDefault();
		console.log('actionValidateKeyClicked');

		//this.model.set('address', '123 ABC');
   ...