Android Retrofit | Post custom object (send json to server)

android, json, laravel, post

Solution

The error is from not providing the `@Body` annotation on your `Order` parameter. Change it to:

@POST(URL_ORDERS)
public void newOrder(@Body Order order, Callback<Boolean> success);

Retrofit uses Gson to serialize and deserialize JSON by default. Gson uses variable names by default for serialization, but they can be changed using the annotation `@SerializedName("replacement_name")`.

For Example, If your `Order` class looked like this:

public class Order {
    @SerializedName("custom_id")
    private int id;
    private String name;
    private List<Item> items;
}

public class Item {
    private int id;
    private String name;
}

Then Gson would automatically serialize that to

{
    "custom_id": 1,
    "name": "Hello Object",
    "items": [
        {
            "id": 1,
            "name": "Hello Item"
        }
    ]
}

Problem

I was wondering how could I go about sending a custom object to my API using retrofit, something like this: ``` @POST(URL_ORDERS) public void newOrder(Order order, Callback<Boolean> success); ``` Here's how I'd parse it on my server ``` public function store() { if(Auth::check()){ $order = Input::get(); $table = $order->table; $items = $order->items; if(!$table->taken){ $table->taken = true; $order->push(); $table->push(); return true; } } return false; } ``` For some reason I'm getting ``` 06-04 20:45:59.275 6085-6306/com.tesis.restapp.restapp W/dalvikvm﹕ threadid=11: thread exiting with uncaught exception (group=0x40aae210) 06-04 20:45:59.285 6085-6306/com.tesis.restapp.restapp E/AndroidRuntime﹕ FATAL EXCEPTION: Retrofit-Idle java.lang.IllegalArgumentException: RestAppApiInterface.newOrder: No Retrofit annotation found. (parameter #1) at retrofit.RestMethodInfo.methodError(RestMethodInfo.java:120) at retrofit.RestMethodInfo.parameterError(RestMethodInfo.java:124) at retrofit.RestMethodInfo.parseParameters(RestMethodInfo.java:443) at retrofit.RestMethodInfo.init(RestMethodInfo.java:131) ``` I guess what I want it do to is to somehow transform my object into a json and send it to my server. Am I approaching this the right way?

Original source