How to convert one currency to another using Laravel currency
What is Laravel currency?
Laravel Currency is a Laravel package that gives the historical, latest currency rate and converts from one currency to another. It also provides crypto exchange rates.
This is possible with the help of the exchangerate.host
Learn how to get the latest currency rate using the same
Laravel-Currencypackage, with a practical example.
In this answer, we will focus on how you can convert one currency to another with a practical example.
Check out the package documentation.
Integrating the currency library
To integrate the currency library, we must have the following:
-
PHP >= 7.2
-
Laravel >= 6.0
-
guzzlehttp >= 6.0
Installation
To install the package, we run the command below.
composer require amrshawky/laravel-currency
Converting currency
We chain some methods to get the latest currency:
- Import the class below into your controller where you want to implement it.
use AmrShawky\LaravelCurrency\Facade\Currency;
In the code below, we convert 150GBP (pounds) to NGN (naira).
Currency::convert()
->from('GBP')
->to('NGN')
->amount(150)
->get();
Output
The output of the code will be like so:
6000 // assuming the rate is 400NGN to 1GBP
The code above chains four methods:
from(), which is the base currency.to(), which is the quoted currency or the currency you are converting to.amount(), takes an integer value.get(), computes the output.
Parameter
Both the from() and the to() method receive a three letter code representing the currency, e.g., USD, EUR, NGN.
Code
To give a practical example, we will create a controller CurrencyController.php like so:
-
php artisan make:controller CurrencyController. -
Type this on your command line. You can find your new controller in the
app/Http/Controllers/directory asCurrencyController.php.
<?phpnamespace App\Http\Controllers;use AmrShawky\LaravelCurrency\Facade\Currency;use Illuminate\Http\Request;class CurrencyController extends Controller {public function ConvertCurrency(Request $request){$from = $request->from;$to = $request->to;$amount= $request->amount;$converted=Currency::convert()->from($from) //currncy you are converting->to($to) // currency you are converting to->amount(100) // amount in USD you converting to EUR->get();return view('blade_name',compact('converted'));}}
Explanation
In the code example above, the ConvertCurrency() method will return the ＄converted amount. The converted amount says 100 USD equals 130 GBP, and it will return 130 or null if the operation fails.
ConvertCurrency() receives the Request façade to enable it to work with the users request, so I assume your blade file contains two input with to and from as their names and finally one input with its name as amount.