在Android中使用Loopback.js更新行

Question

我使用loopback（Node.js）为我的Android应用创建了一个restful api。 我可以使用findById,destroy等。但是，当我尝试更新我的数据只是为first_name工作。 我该如何解决这个问题？

我的代码： MainActivity

public void guncelle(View view) { 
    repository.findById(user_id.getText(), new ModelRepository.FindCallback<Users>() { 
     @Override 
     public void onSuccess(Users user) { 
      if (user == null) { 
       Toast.makeText(getApplicationContext(), "Hata oluştu!", Toast.LENGTH_SHORT).show(); 
      } else { 
       user.put("first_name", first_name.getText()); //This is work 
       user.put("last_name", last_name.getText()); // nope 
      user.put("email", email.getText()); //nope 
       user.put("username", username.getText()); // and nope :(

       user.save(new VoidCallback() { 
        @Override 
        public void onSuccess() { 
         Toast.makeText(getApplicationContext(), "Güncelleme Başarılı", Toast.LENGTH_SHORT).show(); 
        } 

        @Override 
        public void onError(Throwable t) { 
         Toast.makeText(getApplicationContext(), "Hata oluştu!", Toast.LENGTH_SHORT).show(); 
         Log.d("Hata: ", String.valueOf(t)); 
        } 
       }); 
      } 
     } 

     @Override 
     public void onError(Throwable t) { 
      Toast.makeText(getApplicationContext(), "Hata oluştu!", Toast.LENGTH_SHORT).show(); 
      Log.d("Hata: ", String.valueOf(t)); 
     } 

    }); 
} 

用户

public class Users extends Model { 

private String first_name, last_name, email, username; 

public void setFirst_Name(String first_name) { 
    this.first_name = first_name; 
} 

public String getFirst_Name() { 
    return first_name; 
} 

public void setLast_name(String last_name) { 
    this.last_name = last_name; 
} 

public String getLast_name() { 
    return last_name; 
} 

public void setEmail(String email) { 
    this.email = email; 
} 

public String getEmail() { 
    return email; 
} 

public void setUsername(String username) { 
    this.username = username; 
} 

public String getUsername() { 
    return username; 
} } 

Answer 1

我找到了解决办法。我在github中使用旧的代码，但新的代码是工作。

 Users user= repository.createObject(ImmutableMap.of("id", 2)); 
    user.setFirst_name("Name"); 
    user.setLast_name("Surname"); 
    user.setEmail("Email"); 
    user.setUsername("Username"); 
    user.save(new VoidCallback() { 
     @Override 
     public void onSuccess() { 
      // Pencil now exists on the server! 
     } 

     @Override 
     public void onError(Throwable t) { 
      // save failed, handle the error 
     } 
    });