Show one month at a time, and change month with calendar and buttons

api/src/Moneda.php

@@ -16,11 +16,11 @@ class Moneda extends Model {
     protected static $fields = ['denominacion', 'codigo'];
 
     public function format($valor) {
-        return implode('', [
+        return trim(implode('', [
            $this->prefijo,
            number_format($valor, $this->decimales, ',', '.'),
            $this->sufijo
-        ]);
+        ]));
     }
     public function cambio(\DateTime $fecha) {
         $cambio = $this->factory->find(TipoCambio::class)
@@ -43,4 +43,14 @@ class Moneda extends Model {
         }
         return $cambio->transform($valor);
     }
+
+    public function toArray(): array {
+        $arr = parent::toArray();
+        $arr['format'] = [
+            'prefijo' => $this->prefijo,
+            'sufijo' => $this->sufijo,
+            'decimales' => $this->decimales
+        ];
+        return $arr;
+    }
 }