If you need to save two models using a form controller, you may run into some issues. However, it is possible! The key is to instantiate the related models manually.

Assume you have a Person model and a Phone model. On your People form controller you want to create/update the Phone model, but you don't want it to look like it's a separate record. Proxy fields to the rescue!

#Acme/Anvil/Models/Person/fields.yaml

fields:
    name:
        label: Name
        commentAbove: Text field, required. Given name in the first box, preferred name in the second box.

    # Proxy Fields
    phone[name]:
        span: auto
        label: Phone Name

    phone[number]:
        span: auto
        label: Phone Number

Shown above are two proxy fields which are denoted by the nested keys. Note that phone[] is the name of the relation on the Person model.

Once your proxy fields are defined, there's just one more important step: manually instantiating the related model.

//Acme/Anvil/Controllers/People.php
...
public function formExtendModel($model)
    {
        /*
         * Init proxy field model if we are creating the model
         */
        if ($this->action == 'create') {
            $model->phone = new Phone;
        }
        return $model;
    }
...

And viola! You can now save data on multiple models at a time. Note that this only works for a single related model (1 phone to 1 person), for more than one, use a Relation behavior.

See also: the People controller of the October Test Plugin

thank you jwilson8767. Very usefull!

or all of you can try this code if you want to extend some plugin. For example, i want to add image and location to KurtJensen.MyCalendar plugin.

1. create your plugin
2. add this code to your plugin.php

public function boot()
    {
        EventModel::extend(function($model) {
            $model->hasOne = [
                'place' => ['Rahman\Calendar\Models\Event']
            ];
            $model->attachOne = [
                'featured_image' => ['System\Models\File']
            ];

            $model->bindEvent('model.beforeDelete', function() use ($model) {
                $model->place && $model->place->delete();
            });
        });

        EventController::extendFormFields(function($widget, $model, $context) {
            if (!$model instanceof EventModel)
                return;

            if ($context == 'create')
                $model->place = new Event;

            $widget->addFields([
                'featured_image' => [
                    'label'      => 'Featured image',
                    'type'       => 'fileupload',
                    'mode'       => 'image',
                    'imageWidth' => 260,
                    'imageHeight'=> 260,
                    'span'       => 'auto'
                ],
                'place[location]' => [
                    'label'     => 'Location',
                    'span'      => 'auto',
                ]
            ]);
        });
    }

That's it!

Hi everyone. I'm having some troubles for use the proxy fields with fileupload and a help would be very apreciated.

With this in my controller ...

public function formExtendModel($model)
    {
        if ($this->action == 'create') {

            $openingMessage             = new Message();
            $openingMessage->creator    = BackendAuth::getUser();
            $openingMessage->file       = new File();

            $model->message             = $openingMessage;
        }
        return $model;
    }

... and this in my fields.yaml ...

    message[content]:
        label : Message
        type : textarea
        context : ['create']

    message[file]:
        label : File
        type : fileupload
        context : ['create']

.. I got this ...

Call to undefined method Illuminate\Database\Eloquent\Collection::hasRelation()

.. am i doing something wrong ?

Last updated 10 years ago

View the stack trace to see what class through the exception, work from there.

awesome!
thanks!
I need mooooorrrreeee

Last updated 10 years ago

I may be 5 years too late but I have to thank you on this one, this issue got me stuck for a while !