send image to al1.best:89..api..add-item

FlutterMultipartRequest.dart

// Take Image From Galery
_takeImageGallery() async{
    var picture = await ImagePicker.pickImage(source: ImageSource.gallery);
    setState(() {
      imageSource = picture;
    });
  }

Future<StreamedResponse> sendPostRequest() async{
    try{
      String image_url;
      String url = "http://al1.best:89/api/add-item/";

      if(imageSource != null){
        image_url = imageSource.path;
      }else{
        image_url = null;
      }
      // Create a request
      var request = MultipartRequest('POST', Uri.parse(url));

      // Add Request Body
      if(image_url != null){
        request.files.add(
            await MultipartFile.fromPath(
                'image_url',
                image_url
            )
        );
      }
      request.fields['name'] = nameController.text;
      request.fields['category'] = category;
      request.fields['number'] = number.toString();
      request.fields['price'] = priceController.text;
      request.fields['description'] = description.text;

      final response = await request.send();
      print(response.statusCode);
      final respStr = await response.stream.bytesToString();
      print("res: $respStr");
      print("statusCode: ${response.statusCode}");

      return response;
    }
    on Exception catch (exception){
      print("Exception: $exception");
      return null;
    }
  }