Sometimes you want to display a dropdown with more than just the name of the item that can be selected.

For example a standard drop down of cars would be:

• Audi
• Opel
• Mercedes
• Suzuki

But we want to display also the unique sales code of the car.

• Audi (AU)
• Opel (OL)
• Mercedes (ME)
• Suzuki (SU)

There's no default way to combine inputs like that from a different model. So we have to do it ourselves This is the layout I use for this example:

• Model Manager: This holds all the different cars
• Model PriceManager: This holds prices. This is where we want to display a dropdown with cars

In /plugin/carmanager/models/pricemanager/fields.yaml we define the following for car

car :
    span: left
    type: dropdown
    label: Choose

This will make sure the function get*name*Options gets called.

This function wants a return value in the form of

['key'] => ['value']

Where key will be the thing that gets saved in the database, and value the thing that gets displayed.

In this case we need in /plugin/carmanager/models/PriceManager.php the following function to get the items to display properly.

public function getCarOptions() {
    $res = Manager::get(['id','name','code'])->toArray();
    $ret = [];
    foreach($res as $value) {
        // Turns it into ['33'] => 'Audio (AU)'
        $ret[$value['id']] = $value['name'] . ' ('.$value['code'].')';
    }
    return $ret;
}

And now you can display the dropdown values the way you want to :-)

Last updated 8 years ago