Question

我试图调用一个方法from_server，给它一个接受结果的块。 from_server从api加载一个项目列表，然后为列表中的每个项目调用一个函数add_update，给它一个块来接受每个细节的结果。处理完所有细节后，from_server会调用其块来返回摘要。

我可以让低级别工作正常。我的问题是第一个函数在一切完成之前调用它的块。

不确定我需要放置block.call的原因或位置

主要来电者

from_server do |updates, inserts|
  puts "\n  Updates = #{updates}"
  puts "  Inserts = #{inserts}\n\n"
  puts 'all Done'
end

调用

的from_server函数

def from_server(&block)
  inserts = 0
  updates = 0
  channels = [1,2,4,6,7]
  for channels.each do
    add_update("/api/channels/#{channel}", &block) do |added, channel|
      if added
        inserts += 1
      else
        updates += 1
      end
      #do some things with channel
    end
    block.call(updates, inserts) unless block.nil? # problem is here gets returned as soon as all channels have been started on a thread
  end
end

获取列表并处理每个项目

def from_server(&block)
  uri = '/api/channels'
  ApiRequest.get(uri) do |header, body|
    new_count = 0
    update_count = 0
    puts "\nList Body = #{body}\n"
    body.each do |channel|
      add_update(channel['uri']) do |new, ad_channel|
        if new
          puts "\nNew #{ad_channel}"
          new_count += 1
        else
          puts "\nUpdate #{ad_channel}"
          update_count += 1
        end
        puts
      end
    end
    puts "\nDONE\n"
    block.call(update_count, new_count) unless block.nil?
    puts "All Requests Done\n"
  end
  puts "Request all channels started"
end

处理每个项目

def add_update(channel_uri, &block)
  ApiRequest.get(channel_uri) do |header, body|
    if ad_channel = AdvChannel.find(name: body['name']).first
      puts "\n#{ad_channel.name} already exists"
      new = false
    else
      ad_channel = AdvChannel.create(name: body['name'],
                                     phone: body['phone'],
                                     url: body['uri'],
                                     admin_url: body['admin_url'],
                                     channel_code: body['channel_code'],
                                     uri: channel_uri)
      puts "\nInserting #{ad_channel.name} - #{ad_channel.id}"
      new = true
    end
    block.call(new, ad_channel)  if block_given?
  end

执行调用者的结果是：给我以下内容：

Request all channels started immediately  (expected)
the List Body string (expected)
Add update one started (expected)

DONE  (unexpected should be after all are done)
  Updates = 0  (unexpected should be after all are done)
  Inserts = 0   (unexpected should be after all are done)
all Done   (unexpected should be after all are done)
All Requested Done (unexpected should be after all are done)

the insert or update information for each channel (expected)

如何完成摘要后如何获得摘要？

Rubymotion多级BW :: HTTP调用提前返回

0 个答案: