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

composer require dillingham/nova-attach-many

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);

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'),
    ];
}

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

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

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

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

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
}

This field also respects policies: ie Role / Permission

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

Hi 👋, Im Brian D. I created this Nova package and others

Hope you find it useful. Feel free to reach out with feedback.

Follow me on twitter: @im_brian_d