Laravel - Json object showing empty ParameterBag-CodePudding

I have this JSON data sent in HTTP body in a post request.

{
    "id" : 238,
    "title": "Its a title",
    "description": "Its a description",
    "target_price": 3000,
    "date_of_availability": "16-02-2023",
    "condition": "abc",
    "latitude": "-31.953030",
    "longitude": "115.853600",
    "attributes": {
      "list" : [
        {
         "title" : "Color",
         "value" : "Red"
        },
        {
         "title" : "Frame",
         "value" : "Metal Frame"
        }
       ]
    }
  }

I want attributes to be stored in json data type field. I can get value of all other fields in my controller but when i dd($request->attributes); it show me empty Parameter Bag.

How can i get $request->attributes and store it in my json data type field of mysql.

This is my migration

public function up()
{
    Schema::create('posts', function (Blueprint $table) {
        $table->id('post_id')->generatedAs();
        $table->string('title');
        $table->text('description');
        $table->integer('target_price')->nullable();
        $table->date('date_of_availability')->nullable();
        $table->string('condition')->nullable();
        $table->decimal('latitude', 11, 8);
        $table->decimal('longitude', 11, 8);
        $table->json('attributes')->nullable();
        $table->timestamps();
    });
}

Here i am saving

$post = new Post();
$post->title = $data->title;
$post->description = $data->description;
$post->target_price = $data->target_price;
$post->date_of_availability = date("Y-m-d", strtotime($data->date_of_availability));;
$post->condition = $data->condition;
$post->latitude = $data->latitude;
$post->longitude = $data->longitude;
$post->attributes = $data->attributes;
$post->save();

This is the error i am getting for line $post->attributes = $data->attributes;

"message": "Object of class Symfony\Component\HttpFoundation\ParameterBag could not be converted to string",

CodePudding user response：

The Laravel request object uses magic methods to access the parameters that are passed in the body of the request. This only works if the Request class doesn't already have a property of the same name.

The Illuminate\Http\Request class extends the Symfony\Component\HttpFoundation\Request class which has an explicit property called $attributes:

/**
 * Custom parameters.
 *
 * @var ParameterBag
 */
public $attributes;

If you want to explicitly get a property from the request body without using the magic method you can use the input or json methods:

$post->attributes = $request->json('attributes');