1. Requirements
2. Installation
3. Usage
4. Changelog
5. Credits

Requirements

• php: ^7.4 | ^8
• laravel/nova: ^4

Installation

composer require lupennat/nova-expandable-many:^3.0

NOVA	PACKAGE
<4.29.5	1.x
<4.32.6	2.x
>=4.32.6	3.x

Usage

Register Trait HasExpandableMany globally on Resources.

the Trait include an override of indexFields method, it call method withoutListableFieldsNotExpandable instead of withoutListableFields on FieldCollection; if you already register a custom ovveride of indexFields you can do it manually without using provided trait.

ExpandableMany Package automatically enable a new method expandable for all Many Relationship Fields:

• BelongsToMany
• HasMany
• HasManyThrough
• MorphedByMany
• MorphMany
• MorphToMany

The relation table (without any custom actions and lenses) will be displayed as a collapsable row on the index page.

use Laravel\Nova\Fields\HasMany;
use Laravel\Nova\Http\Requests\NovaRequest;

class User extends Resource
{

   use Lupennat\ExpandableMany\HasExpandableMany;

    public function fields(Request $request)
    {
        return [
            HasMany::make('User Post', 'posts', Post::class)->expandable();
        ];
    }
}

By Default expandable use Show and Hide as labels, you can change labels using meta

    HasMany::make('User Post', 'posts', Post::class)->expandable()
        ->withMeta([
            'expandableShowLabel' => 'Custom Show',
            'expandableHideLabel' => 'Custom Hide',
        ])

you can also define a custom HTML using

    HasMany::make('User Post', 'posts', Post::class)->expandable()
        ->withMeta([
            'expandableShowHtml' => '<strong>Custom Show Html</strong>',
            'expandableHideHtml' => '<strong>Custom Hide Html</strong>',
        ])

if both custom label and HTML are defined, HTML will be used

By Default expandable do not store on browser history any status, you can change it using meta

    HasMany::make('User Post', 'posts', Post::class)->expandable()
        ->withMeta([
            // 'expandableStoreStatus' => 'full', // will store status also for relationships
            'expandableStoreStatus' => 'accordion', // will store status only for accordion
            'expandableStoreStatus' => '', // will not store any status
        ])

Expandable can be skipped and an empty field is shown (by Default is false)

    HasMany::make('User Post', 'posts', Post::class)->expandable()
        ->withMeta([
            'expandableSkip' => true,
            'expandableSkipLabel' => '', // default is '—'
        ])

Expandable can disable standard actions (By Default is enabled)

    HasMany::make('User Post', 'posts', Post::class)->expandable()
        ->withMeta([
            'expandableUseStandardActions' => false, // disable create/edit/view/delete/restore
        ])

Display Callback

Expandable Many will resolve a display callback foreach resource, you can use it to manipulate meta attributes dinamically.

    HasMany::make('User Post', 'posts', Post::class)
        ->expandable(function(HasMany $field, $resource) {
            $resource->loadCount('posts');
            $field->withMeta([
                'expandableShowLabel' => 'Show ' . $resource->posts_count,
                'expandableSkip' => $resource->posts_count === 0
            ]);
        })

By Default Expandable do not resolve relations, accessing a relationAttribute through the $resource will execute a query against database to load all related models.

Lens

If you want to use Expandable Many inside a Lens, you need to register also the trait HasExpandableManyLens inside your Lens.

use Laravel\Nova\Fields\HasMany;
use Laravel\Nova\Http\Requests\NovaRequest;
use Laravel\Nova\Lenses\Lens;

class UserLens extends Lens
{
   use Lupennat\ExpandableMany\HasExpandableManyLens;

    public function fields(Request $request)
    {
        return [
            HasMany::make('User Post', 'posts', Post::class)->expandable();
        ];
    }
}

Credits

This package is based on the original idea from Nova Expandable Row