Hide and show form field bases on a multi-select or checkbox list by Suhendra Katrali - Tricks

Let's say your user has many roles. On user form you want to show a field only for certain roles (in below example the role IDs are 2 and 3). And make it empty for other roles.

Forms\Components\MultiSelect::make('roles') // or
Forms\Components\CheckboxList::make('roles')
    ->relationship('roles', 'name')
    ->reactive()
    ->afterStateUpdated(function (Closure $set, Closure $get) {
        if((! in_array(3, $get('roles'))) && (! in_array(2, $get('roles')))){ ) // 3 and 2 are roles IDs
            $set('hospital_id', null);
        }
    }),
Forms\Components\Select::make('hospital_id')
    ->label('Hospital')
    ->relationship('hospital', 'name')
    ->hidden(fn (Closure $get): bool => ! (in_array(3, $get('roles')) || in_array(2, $get('roles')))) // 3 and 2 are role IDs
    ->searchable(),

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