Laravel Nova Model关系2款以上

Question

I'm using the Laravel Nova framework and I'm having difficulty using relationships when it comes to visualization (index, and show methods).

Ex: I have a model called User (id, name address_id), it has a relationship with Address (id, street, state_id), and Address has a relationship with State (id, name), all use belongsTo .

How do I show State in the User profile? The way I know of is $ user-> address-> state-> name , but how do I do that with Nova? Or would you have to create a state_id field in User as well? (that would be awful)

Answer 1

Nova support callbacks for field value description. Try this one:

Text::make('state', function($resource) {
                // Some code for receiving your state data
                return $resource->address->state; // as example
            })->exceptOnForms(),

For more details, read this Computed Fields

And this Dynamic Field Methods

Answer 2

You can use displayUsing

 BelongsTo::make('State name', 'address', Address::class)                      
       ->displayUsing(function () {
            return $this->address->state->name;
        })