How to get body payload error when ApiResponse is used?

[aroeiraio]

I'm trying to get the response body error from an endpoint, but apparently none available method return it.

Would it be possible to get the body error?

GET /cart/add/123 HTTP400 - 400 Bad Request Content-type: application/json

{
    "success": false,
    "error": "Cart exceed the maximum allowed items (3)"
}

Where I'm trying to get the error payload

        viewModelScope.launch {
            _state.update { it.copy(isLoading = true) }

            apiRepository.addItemToCart(productId, quantity)
                .onSuccess {
                    Timber.d("CartViewModel - Successfully added item to cart: productId=$productId, new total items: ${data.data?.totalItems ?: 0}")
                    _state.update {
                        it.copy(
                            isLoading = false,
                            cartData = data.data,
                            error = null
                        )
                    }
                }
                .onError {
                    Timber.e("CartViewModel - Error adding items. Error: $messageOrNull, Raw: ${payload.toString()}")
                    _state.update {
                        it.copy(
                            isLoading = false,
                            error = messageOrNull // Use the potentially more specific error message
                        )
                    }
                }
                .onException {
                    Timber.e("CartViewModel - Exception adding item to cart: productId=$productId")
                    _state.update {
                        it.copy(
                            isLoading = false,
                            error = "Network error: ${message()}"
                        )
                    }
                }
        }

message(), messageOrNull and payload return always the same:

HttpResponse[http://domain.net/cart/add/123, 400 Bad Request]

[skydoves]

Hi @aroeiraio, you can just directly access the error payload instance inside the onError extension. You can check out the details on the doc.