# Livewire Select
Livewire component for dependant and/or searchable select inputs
### Preview
### Installation
You can install the package via composer:
```bash
composer require asantibanez/livewire-select
```
### Requirements
This package uses `livewire/livewire` (https://laravel-livewire.com/) under the hood.
It also uses TailwindCSS (https://tailwindcss.com/) for base styling.
Please make sure you include both of these dependencies before using this component.
### Usage
In order to use this component, you must create a new Livewire component that extends from
`LivewireSelect`
You can use `make:livewire` to create a new component. For example.
``` bash
php artisan make:livewire CarModelSelect
```
In the `CarModelSelect` class, instead of extending from the base Livewire `Component` class,
extend from `LivewireSelect` class. Also, remove the `render` method.
You'll have a class similar to this snippet.
``` php
class CarModelSelect extends LivewireSelect
{
//
}
```
In this class, you must override the following methods to provide options for your select input
```php
public function options($searchTerm = null) : Collection
{
//
}
```
`options()` must return a collection of keyed values array items that must have at least the following
keys: `value` and `description`. For example:
```php
public function options($searchTerm = null) : Collection
{
return collect([
[
'value' => 'honda',
'description' => 'Honda',
],
[
'value' => 'mazda',
'description' => 'Mazda',
],
[
'value' => 'tesla',
'description' => 'Tesla',
],
]);
}
```
To render the component in a view, just use the Livewire tag or include syntax
```blade
```
You'll see on screen a select input with some custom styles with your defined values
Nothing fancy there. Now, let's make another select input depend on its value.
Create another component following the same process above. In this case, we will create
a `CarModelSelect` with the following `options()` method.
```php
// In CarModelSelect component
public function options($searchTerm = null) : Collection
{
$modelsByBrand = [
'tesla' => [
['value' => 'Model S', 'description' => 'Model S'],
['value' => 'Model 3', 'description' => 'Model 3'],
['value' => 'Model X', 'description' => 'Model X'],
],
'honda' => [
['value' => 'CRV', 'description' => 'CRV'],
['value' => 'Pilot', 'description' => 'Pilot'],
],
'mazda' => [
['value' => 'CX-3', 'description' => 'CX-3'],
['value' => 'CX-5', 'description' => 'CX-5'],
['value' => 'CX-9', 'description' => 'CX-9'],
],
];
$carBrandId = $this->getDependingValue('car_brand_id');
if ($this->hasDependency('car_brand_id') && $carBrandId != null) {
return collect(data_get($modelsByBrand, $carBrandId, []));
}
return collect([
['value' => 'Model S', 'description' => 'Tesla - Model S'],
['value' => 'Model 3', 'description' => 'Tesla - Model 3'],
['value' => 'Model X', 'description' => 'Tesla - Model X'],
['value' => 'CRV', 'description' => 'Honda - CRV'],
['value' => 'Pilot', 'description' => 'Honda - Pilot'],
['value' => 'CX-3', 'description' => 'Mazda - CX-3'],
['value' => 'CX-5', 'description' => 'Mazda - CX-5'],
['value' => 'CX-9', 'description' => 'Mazda - CX-9'],
]);
}
```
and define it in the view like this
```blade
```
With these two snippets we have defined a select input that `depends-on` another
select input with name `car_brand_id`. With this definition, we tell our component
to listen to any updates on our `car_brand_id` input and be notified on changes.
Notice in the `options()` method the use of two other helper methods:
`getDependingValue` and `hasDependency`.
`getDependingValue('token')` will return the value of another field, in this case
`car_brand_id`. If `car_brand_id` has no value, then it will return `null`.
`hasDependency('token')` allows us to check if our component has been specified
to depend on other component values. This allows us to reuse the component by checking
if a dependency has been specified in our layouts.
For example if we define the same component without the `:depends-on` attribute,
we can use the component and return all car models.
```blade
```
It should look something like this
### Searchable inputs
You can define the `searchable` attribute on the component to change the behavior of your
inputs. With `:searchable="true"` your component will change its behavior to allow searching
the options returned in the `options()` method.
```blade
```
Your input will look something like this
To filter the options in the dropdown, you can use the `$searchTerm` parameter in the
`options()` method.
### Customizing the UI
// TODO 😬
### Advanced behavior
// TODO 😬
### AlpineJs support
Add AlpineJs for arrow-keys navigation, enter key for selection, enter/space keys for reset. 😎
### Testing
``` bash
composer test
```
### Changelog
Please see [CHANGELOG](CHANGELOG.md) for more information what has changed recently.
## Contributing
Please see [CONTRIBUTING](CONTRIBUTING.md) for details.
### Security
If you discover any security related issues, please email santibanez.andres@gmail.com instead of using the issue tracker.
## Credits
- [Andrés Santibáñez](https://github.com/asantibanez)
- [All Contributors](../../contributors)
## License
The MIT License (MIT). Please see [License File](LICENSE.md) for more information.