Role Model

Role Model adds validation functionality to your Laravel 4 Eloquent models.

Table of contents

• Installation
• Usage
  • Validation
• Changelog
• License

Installation

Install the package via Composer by requiring it in your composer.json:

"require": {
	"betawax/role-model": "~1.0"
}

Don't forget to run composer install afterwards.

Heads up! Use ~1.0 to get only stable releases until the next major release or dev-master to stay up to date with the latest commits in the master branch.

Now rather than extending Eloquent in your model, extend Betawax\RoleModel\RoleModel instead:

class Foobar extends Betawax\RoleModel\RoleModel {
	
}

For your convenience, I recommend to edit your app/config/app.php and add Betawax\RoleModel\RoleModel to the aliases array:

'aliases' => array(
	'RoleModel' => 'Betawax\RoleModel\RoleModel'
)

Now you can simply extend RoleModel in your model:

class Foobar extends RoleModel {
	
}

That's it. Since Role Model extends from Eloquent, you don't have to change anything else in your model. You now can start to use the extra functionality described in the usage section below.

Usage

Validation

Role Model allows validation to take place in the model rather than the controller. You simply specify validation rules in your model and Role Model then auto-validates your model on each save. The validation itself is done via Laravel's Validation facility.

Defining validation rules

Define validation rules for your model via the static $rules array:

class Foobar extends RoleModel {
	
	public static $rules = array(
		'name'  => 'required',
		'email' => 'unique:foobar,email,:id:',
	);
	
}

See the validation section in the Laravel documentation for a list of all available validation rules.

Heads up! Note that in the example above :id: is a placeholder that automatically gets replaced by the value of your model's primary key before every validation. This allows the usage of the unique validation rule when updating your model. You're welcome.

Auto-validate on save

Role Model uses Eloquent's model events to hook into your model's lifecycle and auto-validate the model on each save. An example implementation would be:

public function store()
{
	$model = new Foobar;
	$model->name = 'foobar';
	
	if ($model->save())
	{
		// Validation passed
		return Redirect::action('FoobarController@index');
	}
	
	// Validation failed, errors are available via $model->errors()
	return Redirect::action('FoobarController@create')->withInput()->withErrors($model->errors());
}

Retrieving validation errors

You retrieve validation errors via the errors() getter:

$model->errors() // Instance of MessageBag or null

Like using Laravel's Validation class directly, the return value from errors() will be an instance of MessageBag or null if there are no validation errors.

Check for validation errors

To check if a model has validation errors, you use the hasErrors() method:

$model->hasErrors() // true or false

Validate without saving

If you just want to validate without saving, you can use the validate() method directly:

$model->validate() // true or false

Validate with custom rules

You can also validate with custom rules by simply passing it to the validate() method:

$rules = array(
	'name' => 'required|min:5'
);

$model->validate($rules);

Retrieving validation rules

You can retrieve your model's validation rules without the need to instantiate the whole model:

$model::$rules // array

Access the Validator instance

You are free to access the Validator instance after validation by using the validator getter:

$model->validate(); // or $model->save()
$validator = $model->validator(); // Illuminate\Validation\Validator
$messages = $validator->messages();

Force save without validation

If you want to force save your model without validation, simply use the forceSave() method instead of save():

$model->forceSave()

Changelog

See the GitHub releases page for a list of changes.

License

Licensed under the MIT license.