Rubymotion & RestKit

Question

是否有人让Rubymotion使用RestKit的RKObjectManager并成功地从服务器加载了一些对象？我在这方面有很多麻烦。我有RestKit-- RKClient很好用。我可以成功地得到和张贴，这是很好的。但是我不能用RKObjectManager加载资源。我的Rakefile看起来是这样的

$:.unshift("/Library/RubyMotion/lib")
require 'motion/project'

Motion::Project::App.setup do |app|
  # Use `rake config' to see complete project settings.
  app.name = 'RestKitTest'
  app.frameworks += %w(CoreData CFNetwork Security MobileCoreServices SystemConfiguration QuartzCore)
  app.vendor_project('vendor/RestKit', :xcode, :target => 'RestKit', :headers_dir => '../Headers/RestKit/')
end

我的应用程序代表如下：

class AppDelegate
  def application(application, didFinishLaunchingWithOptions:launchOptions)
    @window = UIWindow.alloc.initWithFrame UIScreen.mainScreen.bounds
    @window.rootViewController = TestViewController.alloc.init
    @window.rootViewController.wantsFullScreenLayout = true
    @window.makeKeyAndVisible
    true
  end
end

我的存根TestViewController看起来是这样的：

class TestViewController < UIViewController
  def init
    super

    puts "checkpoint 1"

    manager = RKObjectManager.managerWithBaseURLString "http://mlpong.herokuapp.com"
    puts "checkpoint 2"

    mapping = RKObjectMapping.mappingForClass League.class
    puts "checkpoint 3"

    # mapping.mapAttributes("id", "name", "url", nil)
    mapping.mapKeyPath("id", toAttribute:"id")
    mapping.mapKeyPath("name", toAttribute:"name")
    mapping.mapKeyPath("url", toAttribute:"url")
    puts "checkpoint 4"

    manager.mappingProvider.setObjectMapping(mapping, forKeyPath:"")
    puts "checkpoint 5"

    manager.loadObjectsAtResourcePath("/leagues.json?auth_token=my_auth_token", delegate:self)
    puts "checkpoint 6"

    self
  end

  def objectLoader(loader, didFailWithError:error)
    puts "failed with error: #{error.domain}"
  end

  def objectLoader(loader, didLoadObjects:objects)
    puts "success!"
  end
end

不幸的是，您不能使用这个精确的代码进行测试，因为您需要我的令牌作为站点。

RKObjectMapping类的mapAttributes方法(上面注释掉)无法工作。如果我离开它，应用程序会输出1-3个检查点，然后是怪物。rake --跟踪揭示了这一点：

** Invoke default (first_time)
** Invoke simulator (first_time)
** Invoke build:simulator (first_time)
** Execute build:simulator
** Execute simulator
/usr/bin/defaults write com.apple.iphonesimulator "SimulateDevice" "'iPhone'"
DYLD_FRAMEWORK_PATH="/Applications/Xcode.app/Contents/Developer/../Frameworks":"/Applications/Xcode.app/Contents/Developer/../OtherFrameworks" /Library/RubyMotion/bin/sim 2 1 5.1 "/Applications/Xcode.app/Contents/Developer" "./build/iPhoneSimulator-5.1-Development/RestKitTest.app"
checkpoint 1
checkpoint 2
checkpoint 3
(main)> ** Execute default

如果我注释掉mapAttributes行，并使用另一个(更长的)对象映射版本(在检查点4之前未注释的3行)，则可以通过所有检查点，但当我使用rake -trace时会收到此结果。

** Invoke default (first_time)
** Invoke simulator (first_time)
** Invoke build:simulator (first_time)
** Execute build:simulator
** Execute simulator
/usr/bin/defaults write com.apple.iphonesimulator "SimulateDevice" "'iPhone'"
DYLD_FRAMEWORK_PATH="/Applications/Xcode.app/Contents/Developer/../Frameworks":"/Applications/Xcode.app/Contents/Developer/../OtherFrameworks" /Library/RubyMotion/bin/sim 2 1 5.1 "/Applications/Xcode.app/Contents/Developer" "./build/iPhoneSimulator-5.1-Development/RestKitTest.app"
checkpoint 1
checkpoint 2
checkpoint 3
checkpoint 4
checkpoint 5
checkpoint 6
(main)> terminate called without an active exception** Execute default

我整天都在犯这些错误。如果有人知道，请告诉我。非常感激的帮助。谢谢,

巴春

Answer 1

你已经调用了一些不存在的方法。

manager.mappingProvider.setObjectMapping(mapping, forKeyPath:"")
puts "checkpoint 5"

manager.loadObjectsAtResourcePath("/leagues.json?auth_token=my_auth_token", delegate:self)
puts "checkpoint 6"

应该是的。

manager.loadObjectsAtResourcePath("/leagues.json?auth_token=my_auth_token", mapping:mapping, delegate:self)
puts "checkpoint 5"

参见我在以下网站上找到的类似问题：loadObjectsAtResourcePath (RestKit)