Dynamic select field for Laravel Nova
This field allows you to dynamically fill contents of a select based on values in other dynamic select fields.
Field is based on [nova-belongs-to-dependency]{https://novapackages.com/packages/manmohanjit/nova-belongs-to-dependency} but instead of selecting model, you can select custom values.
Usage
Class have 2 special methods on top of default Select from Laravel Nova.
dependsOn can take a list of other fields this one depends on.
options can be either an array or a callable.
If its a callable, it will receive array with selected dependency values as
first argument and should return an array of items to be shown on the select field.
Example:
public function fields(Request $request)
{
return [
ID::make()->sortable(),
DynamicSelect::make('Country', 'country')
->options(['US' => 'United States', 'UK' => 'United Kingdom'])
->rules('required')
,
DynamicSelect::make('Provider', 'provider')
->options(['PR' => 'Premium', 'ST' => 'Standard'])
->rules('required')
,
DynamicSelect::make('Product', 'product')
->dependsOn(['country', 'provider'])
->options(function($values) {
if($values['country'] === 'UK' && $values['provider'] === 'PR') {
return ['A' => 'Fast shipping', 'B' => 'Normal shipping', 'C' => 'Free shipping'];
} else {
return ['A' => 'Fast shipping', 'B' => 'Normal shipping'];
}
})
->rules('required')
,
];
}