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Converts FormRequest rules to Parsley or formValidation rules

1.0.1 2015-10-03 11:43 UTC

This package is not auto-updated.

Last update: 2021-09-18 01:55:15 UTC


README

Sometimes your users need to get nagged when they enter invalid input, I'm here to make it easier for you to do that.

This package converts FormRequest rules to inline data attributes in your forms.

Both Parsley and formvalidation.io take these data attributes to handle front-end validation.

Install

Start by pulling in the package through composer:

composer require dragonfly/nag

If you have previously set up LaravelCollective/Html or Illuminate/Html you can remove its service provider from app/config

in app/config add the following under service providers:

DragonFly\Nag\NagServiceProvider

If you haven't already, add these facades:

    'Form' => 'Collective\Html\FormFacade',
    'Html' => 'Collective\Html\HtmlFacade',

Open up app/Http/Kernel.php, add a public $formRequest property and assign it an empty array.

    /**
     * Register form requests that require database validation (e.g. the ones that use the exists or unique rule).
     */
    public $formRequest = [];

Lastly do a vendor:publish to get the assets.

php artisan vendor:publish --provider="DragonFly\Nag\NagServiceProvider"

Getting started

By default Nag uses the FormValidation converter for your rules, if You'd like to change that to Parsley open up config/nag.php and change the driver key to 'Parsley'.

It's important to note that both Parsley and FormValidation need additional validators, if you did the vendor publish they should be located in public/assets/js.

Please include the required file after the plugin file.

Note The date validators require moment.js

Useage

All that's needed is for you to supply the name of the FormRequest (either by class name or fully namespaced) in the request key when opening a form:

    Form::open(['request' => 'YourFormRequestClass'])
    Form::open(['request' => 'App\Http\Requests\YourFormRequestClass'])
    Form::model($model, ['request' => 'YourFormRequestClass'])
    Form::model($model, ['request' => 'App\Http\Requests\YourFormRequestClass'])

Lastly you should include parsley's scripts on the page and activate parsley for your form.

easy enough don't you think?

Using database validation

Laravel ships with 2 database validation rules: unique, exists, these 2 rules need to send a request in order to be validated in the front end.

First you'll need to register the FormRequest in your app/Http/Kernel.php. For example if let's register a RegisterUser request (where we would check that the username should be unique).

We'll add it to $formRequest, the key you register it under will become the route's slug:

    public $formRequest = [
        'user-register' => 'App\Http\Requests\RegisterUser',
    ];

next up we'll need to add the ValidateFormRequestTrait trait to the RegisterUser request and assign the same key we provided in our previous step to $kernel_key.

<?php namespace App\Http\Requests;

use DragonFlyAdmin\ValidateUi\ValidateFormRequestTrait;

class RegisterUser extends Request {

    // Add the trait
	use ValidateFormRequestTrait;

    // Define the kernel key
    public $kernel_key = 'user-register';
    
    // Optionally set the route the validation request should be sent through (null for default)
    public $route = null;
    
	/**
	 * Get the validation rules that apply to the request.
	 *
	 * @return array
	 */
	public function rules()
	{
		return [
            'username' => 'required|unique:users|min:3|max:32',
            'password' => 'required|min:5',
		];
	}

}

All that's left for you to do is include the required js files and initialise the validator on the form.

Note This requires parsley-remote to be loaded before Parsley

Note If no $kernel_key is defined the validation rule will be ignored in the front-end

Custom routing

You can define your own route on a per-FormRequest or global basis if you'd like to have more control over the request that's sent when validating database rules.

This is the default route that comes bundled:

    Route::get('validate-ui/{request}/{field}', [
        'uses' => '\DragonFly\Nag\Http\Controllers\CheckController@validate',
        'as' => 'ui.validate'
    ]);

Your custom route should:

  • contain the 2 route parameters: {request} & {field}
  • use the \DragonFly\Nag\Http\Controllers\CheckController@validate
  • should be named

Those are the only requirements, you can change the url to whatever you'd like and add any middleware.

You can replace the default route by editing config/validateui.php's route key and set it to the route you'd prefer.

Next to that you are also able to set the route on your FormRequest, if you've attached the ValidateFormRequestTrait you should be able to assign your route name on the $route property.

Assigning field ids

By default every form input uses the field's name as id, which is fine if you only display 1 form on a page and you're sure there are no other elements on the page with the same id.

However, if you need more control over your form input's id's you can do so on your form Request class by adding a map_html_idsmethod.

This method should return an array, just as the rules, the key would be the name of the input, the value would be the id that will be used when rendering it.

public function map_html_ids() {
    return [
        'first_name' => 'prefixed-first_name',
        'last_name' => 'first_name-suffixed'
    ];
}

if you want a standard format you could always loop over the rules' keys and format accordingly

public function map_html_ids() {
    $fields = array_keys($this->rules());
    
    $format = function($name){
        return 'new-format-' . $name;
    };
    
    $ids = array_map($format, $fields);
    
    return array_combine($fields, $ids);
}

Validation rules

Implemented Not implemented
required check confirmed same ip_address
email unique regex active_url mimes
min date_format alpha numeric image
max before alpha_dash different array
between after alpha_num in
integer accepted url not_in