Angular-Validator

What?

Angular-Validator is an easy to use, powerful and lightweight AngularJS validation directive.

Why?

Despite Angular's awesomeness, validation in Angular is still a pain in the ass. Surprisingly there are no seemless, user-friendly, well written Angular validation tools. Unlike other Angular validation tools, Angular-Validator works with out-of-the-box Angular and HTML5 validation, directives and attributes, allowing your forms to work well with the browser and other Javascript code.

Features

• Validate using REGEX, required, or custom validation functions
• Show validation errors only after field is $dirty or the form is submitted
• Adds validation error/success messages as sibling elements
• Adds .has-error classes to invalid fields only after $dirty or form is submitted
• Adds .has-error classes to validation message
• Works with Bootstrap out of the box (although Bootstrap is not required)
• Supports multi-field dependent validation (one field depends on another such as password matching)
• Works with or without novalidate
• Prevents submission if the form is invalid

Demo

Check out the demo!

Installation

1. Using bower: bower install tg-angular-validator
2. Include angular-validator.min.js into your application's HTML
3. Add angularValidator as a dependancy of your Angular module

Usage

Basic usage for required fields

<input  type = "text"
        name = "firstName"
        ng-model = "person.firstName"
        required>

Usage with a custom validator function

<input  type = "text"
        name = "firstName"
        ng-model = "person.firstName"
        validator = "myCustomValidationFunction(form.firstName)">

Usage with custom validator literal

<input  type = "text"
        name = "firstName"
        ng-model = "person.firstName"
        validator = "form.firstname === 'john'">

Usage with REGEX and required

<input  type = "text"
        name = "firstName"
        ng-model = "person.firstName"
        ng-pattern = "\regex\"
        required>

Usage with custom error message text

<input  type = "text"
        name = "firstName"
        ng-model = "person.firstName"
        ng-pattern = "\regex\"
        invalid-message = "'Please enter the word regex'"
        required-message = "'First name is required'"
        required>

Usage with conditional invalid/required message text

<input  type = "text"
        name = "firstName"
        ng-model = "person.firstName"
        validator= "myCustomValidationFunction(person.firstName) === true"
        invalid-message = "myCustomValidationMe(person.firstName)"
        required-message = "myCustomValidationFunction(person.firstName)"
        required>

• Note that the validator and the message function do not need to be the same function. If you choose to make them the same function make sure to return true on valid input.

Setting up the form

<form novalidate angular-validator angular-validator-submit="myFunction(myBeautifulForm)" name="myBeautifulForm">
    <input>
    <select></select>
    ....
    <button type="submit">Submit</button>
</form>

Use angular-validator-submit to specify the function to be called when the form is submitted. Note that the function is not called if the form is invalid.

Validty API Uses standard Angular $valid and $invalid properties

myForm.$invalid
myForm.$valid
myElement.$valid
myElement.$invalid
myElement.$angularValidator

FAQ

It's not working!? Make sure you have assigned a unique name attribute to each element. Make sure you have properly followed the installation instructions.

Why pass value to custom validator functions? Passing the value to the custom validator function allows the function to be easier to test.

How do I display success messages/classes? The library does not currently support success classes and messages. Feel free to contribute.

What if I want error messages to display before the user types anything? You are using the wrong library.

What if I want to disable the submit button if the form is invalid? You can use ng-disabled=myForm.$invalid on the submit button.

License

MIT