Nova Attach Many

Belongs To Many create & edit form UI for Nova. Enables attaching relationships easily and includes validation.

Installation

composer require blendbyte/nova-attach-many

Usage

use NovaAttachMany\AttachMany;

public function fields(Request $request)
{
    return [
        AttachMany::make('Permissions'),
    ];
}

You can explicitly define the relationship & Nova resource:

AttachMany::make('Field Name', 'relationshipName', RelatedResource::class);

Pivot Values

You can pass additional parameters for any pivot value.
For details, please check https://laravel.com/docs/9.x/eloquent-relationships#syncing-associations

AttachMany::make('Field Name', 'relationshipName', RelatedResource::class, ['pivot_name' => value]);

Display on detail:

This package only provides the create / edit views that BelongsToMany does not.

BelongsToMany should be used for displaying the table on detail views.

public function fields(Request $request)
{
    return [
        AttachMany::make('Permissions'),
        BelongsToMany::make('Permissions'),
    ];
}

Validation

You can set min, max, size or custom rule objects

->rules('min:5', 'max:10', 'size:10', new CustomRule)

Options

Here are a few customization options

• ->showCounts() Shows "selected/total"
• ->showPreview() Shows only selected
• ->hideToolbar() Removes search & select all
• ->height('500px') Set custom height
• ->fullWidth() Set to full width
• ->showRefresh() Request the resources again
• ->showSubtitle() Show the resource's subtitle
• ->help('<b>Tip:</b> help text') Set the help text

All Options Demo

Relatable

The attachable resources will be filtered by relatableQuery() So you can filter which resources are able to be attached

Being Notified of Changes

You can add a method to the resource to be notified of the changes that have happened:

The method must be a camel cased version of the attribute name, followed by Synced. For example:

public function fields(Request $request)
{
    return [
        AttachMany::make('Permissions'),
    ];
}

public function permissionsSynced(array $changes)
{
    $changes['attached']; // An array of IDs of attached models
    $changes['detached']; // An array of IDs of detached models
    $changes['updated']; // An array of IDs of updated models
}

Authorization

This field also respects policies: ie Role / Permission

• RolePolicy: attachAnyPermission($user, $role)
• RolePolicy: attachPermission($user, $role, $permission)
• PermissionPolicy: viewAny($user)