README

Conditionally load a field with the value of the other fields.

Installation

Via composer: composer require armincms/chain.

Usage

The Chain field works as a trigger and listener. a trigger chain listens to the update events of entire fields and the listener chain listening to the trigger Chain events and its entire fields together.

Make trigger field

The trigger Chain initializes via the as method. the as method accepts two arguments. the first argument is the name of event and the second argument is a fields callback. it receives a request instance for resolving fields.

        Chain::as('name', function() {
            return [ 
                Text::make('Name')
                    ->sortable()
                    ->rules('required', 'max:255'), 

                Text::make('Username')
                    ->sortable()
                    ->rules('required', 'max:255'), 
            ];  
        }), 

Make listener field

The listener Chain initializes via the with method. the with method accepts an array of events as the first argument and a callback for the fields as second arguemnt. for listening to a trigger Chain you should pass the name of the Chain as the event name. for listening to a field of a trigger Chain you can prefix the field name by the Chain name and listen to it. for example, you can listen to the name field of a Chain (Chain field named by the 'test'), with the test.name event.

        Chain::with('name', function($request) {
            if($request->filled('username')){
                return [ 
                    Text::make('Password')
                        ->sortable()
                        ->rules('required', 'max:255'), 
                        
                    Text::make('Confirmation')
                        ->sortable()
                        ->rules('required', 'max:255'), 
                ];  
            }
            
            return [];
        }, 'second-chain'), 

        
        Chain::with('second-chain.confirmation', function($request) {
            return [ 
                Boolean::make('Passed')
                  ->readonly()
                  ->withMeta(['value' => 1]), 
            ]; 
        }),