exchange-2.0/app/Http/Resources/WalletTransactionResource.php

<?php

namespace App\Http\Resources;

use Illuminate\Http\Resources\Json\JsonResource;

class WalletTransactionResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array
     */
    public function toArray($request)
    {
        return [
            'id' => $this->id,
            'wallet_id' => (int) $this->wallet_id,
            'bill_no' => (int) $this->bill_no,
            'trans_type'=>(int) $this->trans_type,
            'amount' => (double) $this->amount,
            'currency_id' => (int) $this->currency_id,
            'original_amount' => (double) $this->original_amount,
            'original_currency_id' => (int) $this->original_currency_id,
            'currency_rate' => (double) $this->currency_rate
        ];
    }
}