emilianotisato/nova-belongsto-depends

A Laravel Nova field with dependencie on another BelongsTo relationship.

0.1.4 2019-02-06 19:01 UTC

Requires

• php: >=7.1.0

MIT

• nova
• laravel
• belongsTo relationship
• fields depend

README

This package is based on the original Orlyapps package, which we do not know if is still under maintenance.

Installation

You can install the package in to a Laravel app that uses Nova via composer:

composer require emilianotisato/nova-belongsto-depends

Use this field in your Nova Resource

// Add the use statement a the top of your nova resource
use EmilianoTisato\NovaBelongsToDepends\NovaBelongsToDepends;

// ...

public function fields(Request $request)
{
    return [
        ID::make()->sortable(),
        Text::make('Name')->rules('required', 'max:255'),

        NovaBelongsToDepends::make('Company')
            ->options(\App\Company::all()),
        NovaBelongsToDepends::make('Department')
            ->optionsResolve(function ($company) {
                // Reduce the amount of unnecessary data sent
                return $company->departments()->get(['id','name']);
            })
            ->dependsOn('Company'),
        NovaBelongsToDepends::make('Location')
            ->optionsResolve(function ($company) {
                // Reduce the amount of unnecessary data sent
                return $company->locations()->get(['id','name']);
            })
            ->dependsOn('Company'),

    ];
}

Sample

• Warehouse hasMany Articles
• Articles belongsToMany Suppliers
• Suppliers belongsToMany Articles

1. Select a Warehouse and get all articles of the warehouse
2. Select a Article and get all suppliers who has this article

public function fields(Request $request)
{
    return [
        ID::make()->sortable(),
        Text::make('Name')->rules('required', 'max:255'),

        NovaBelongsToDepends::make('Warehouse')
        ->options(\App\Warehouse::all())
        ->rules('required'),
        NovaBelongsToDepends::make('Article')
            ->optionsResolve(function ($warehouse) {
                return $warehouse->articles;
            })
            ->dependsOn('Warehouse')
            ->rules('required'),
        NovaBelongsToDepends::make('Supplier')
            ->optionsResolve(function ($article) {
                return \App\Supplier::whereHas('articles', function ($q) use ($article) {
                    $q->where('article_id', $article->id);
                })->get();
            })
            ->dependsOn('Article')
            ->rules('required'),


    ];
}

Use multiple instances

Some times you need to use multiple instances o mabye you have a second resource for the same eloquent model (example: App\Nova\User and App\Nova\Provider both represent App\User model). In those cases to avoid conflict you can delcare the specific Nova resources in meta attributes (->withMeta(['calledFromClass' => 'App\Nova\Provider'])) like this:

            NovaBelongsToDepends::make('Client')
                ->options(\App\Client::all()),

            NovaBelongsToDepends::make('Provider')
                ->withMeta(['calledFromClass' => 'App\Nova\Provider'])
                ->optionsResolve(function ($client) {
                    return $client->providers()->active()->get(['id', 'name']);
                })->dependsOn('Client')
                ->rules('required'),

Credits

• Creator: Orlyapps
• Mantainers: Emiliano Tisato

License

The MIT License (MIT). Please see License File for more information.