How to make a graph with dynamic data

[FranMM7]

I'm very new at developing with Laravel and I don't know how to make a dynamic graph

[FranMM7]

I have something like this:

$chart_data_g ='';
                        foreach($data_proyectos_garantias as $item){
                            $chart_data_g .= "{MontoContratoMN:".$item["MontoContratoMN"].", Alias:'".$item["Alias"]."'}, ";
                        }
                        $chart_data_g = substr($chart_data_g, 0, -2);

                         echo Morris::bar( 'morris-bar-g' )
                                    ->xkey( [ 'Alias' ] )
                                    ->ykeys( [ 'MontoContratoMN' ] )                                    
                                    ->data( $chart_data_g);