README

This Laravel Nova package adds a multiselect to Nova's filters and form fields.

Requirements

laravel/nova: ^3.0

Features

Multi select
Single select
Group select
Search
Filter and Field

Installation

Install the package in a Laravel Nova project via Composer:

composer require dpsoft/nova-multiselect-filter

Usage

As a Filter

The filter can be used when switching Filter class with MultiselectFilter.

use Dpsoft\NovaMultiselectFilter\MultiselectFilter;

class BooksByAuthorFilter extends MultiselectFilter
{
    public function apply(Request $request, $query, $value)
    {
        return $query->whereHas('books', function ($query) use ($value) {
            $query->whereIn('author_id', $value);
        });
    }

    public function options(Request $request)
    {
        return Authors::all()->pluck('name', 'id');
    }
}

As a Form Field

The field can be used in Nova resources for form input:

use Dpsoft\NovaMultiselectFilter\MultiselectField;

public function fields(Request $request)
{
    return [
        MultiselectField::make('Categories')
            ->options([
                'tech' => 'Technology',
                'business' => 'Business', 
                'science' => 'Science'
            ])
            ->placeholder('Select categories'),
            
        MultiselectField::make('Tags')
            ->options(Tag::all()->pluck('name', 'id'))
            ->singleSelect() // For single selection
            ->max(3), // Maximum 3 selections
    ];
}

Built-in server-side search endpoint

use Dpsoft\NovaMultiselectFilter\MultiselectFilter;

class UsersByRoleFilter extends MultiselectFilter
{
    public function __construct()
    {
        $this->model(\App\Models\Role::class)
             ->searchColumn('name')
             ->minChars(2)
             ->debounce(300);
    }

    public function apply(Request $request, $query, $value)
    {
        return $query->whereIn('role_id', $value);
    }
}

Option groups

Option groups are supported. Their syntax is the same as Laravel's option group syntax.

In this example (from Nova docs), all values are grouped by the group key:

    public function options(Request $request)
    {
        return [
          'cat' => ['label' => 'Cat', 'group' => 'Pets'],
          'dog' => ['label' => 'Dog', 'group' => 'Pets'],
          'eagle' => ['label' => 'Eagle', 'group' => 'Birds'],
          'parrot' => ['label' => 'Parrot', 'group' => 'Birds'],
        ]
    }

Options

Possible options you can pass to the filter using the option name as a function, ie ->placeholder('Choose peanuts').

Option	type	default	description
`options`	Array\|callable	[]	Options in an array as key-value pairs (`['id' => 'value']`).
`placeholder`	String	Field name	The placeholder string for the input.
`max`	Number	Infinite	The maximum number of options a user can select.
`groupSelect`	Boolean	false	For use with option groups - allows the user to select whole groups at once
`singleSelect`	Boolean	false	Makes the field act as a single select which also means the saved value will not be an array.
`optionsLimit`	Number	1000	The maximum number of options displayed at once. Other options are still accessible through searching.
`ajaxEndpoint`	String	null	Custom endpoint to search and return options for async search. Defaults to `/nova-vendor/nova-multiselect-filter/search`.
`ajaxMethod`	String	get	Request method for async search.
`ajaxParam`	String	search	Query param name for the search term.
`debounce`	Number	300	Debounce in milliseconds for async search.
`minChars`	Number	0	Minimum characters before search triggers.
`model`	String	null	Fully qualified model class name used by the built-in search endpoint.
`searchColumn`	String	null	Column name used by the built-in search endpoint.
`limit`	Number	null	The number of options to return from a server-side search.

Credits

This package was inspired by klepak/nova-multiselect-filter

License

This project is open-sourced software licensed under the MIT license.

dpsoft/nova-multiselect-filter

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