[SOLVED] Auto fill object from json

Auto fill object from json

I have a JSON:

{
   "id":1,
   "name":"John",
   "firstname":"Doe"
}

Server side, I do it:

$input = $request->json()->all();
$user = new User();
$user->id = $input['id'];
$user->name = $input['name'];
$user->firstname = $input['firstname'];

Does it possible to auto fill my object with a JSON, if the the JSON fields and my object fields are the same ? Like below ?

$user = new User();
$user->fromJSON($input);

Solution

Yes, it's possible to create a method fromJSON() in your User class to automatically fill the object properties from a JSON input. Here's how you can do it:

class User {
    public $id;
    public $name;
    public $firstname;

    public function fromJSON($json) {
        $data = json_decode($json, true);

        foreach ($data as $key => $value) {
            if (property_exists($this, $key)) {
                $this->{$key} = $value;
            }
        }
    }
}

// Example usage:
$input = '{
   "id":1,
   "name":"John",
   "firstname":"Doe"
}';

$user = new User();
$user->fromJSON($input);

// Now $user has its properties filled with values from the JSON
echo $user->id; // Outputs: 1
echo $user->name; // Outputs: John
echo $user->firstname; // Outputs: Doe

This method fromJSON() takes a JSON string as input, decodes it into an associative array, and then iterates over each key-value pair. If a property with the same name exists in the User class, it assigns the corresponding value from the JSON data to that property.