Question

I have a method that return a Hash and then I write the entries of hash in xml file. Iwant to convert this Hash to an object to store the entry and then write it to xml file... My current code is like this

def entry(city)
          {
            :loc => ActionController::Integration::Session.new.url_for(:controller =>  cities , :action =>  show , :city_name => city.name, :host => @country_host.value),
            :changefreq => 0.8,
            :priority =>  monthly ,
            :lastmod => city.updated_at
          }
end

书写字——录入方法在我的撰稿人栏目中写明该条目为xml文档。

   def write_entry(entry)
      url = Nokogiri::XML::Node.new( "url" , @xml_document )
      %w{loc changefreq priority lastmod}.each do |node|
        url <<  Nokogiri::XML::Node.new( node, @xml_document ).tap do |n| 
          n.content = entry[ node.to_sym ] 
        end  
      end
      url.to_xml
    end

增编

Answer 1

我也许会在这里走过,但似乎与你再次试图做的事情一样:

首先,列出贵新物体的类别名称的含义。我是随行的,因为你的方法的名称是:

class Entry
end

之后,在物体上采用一切“优待”方法:

class Entry
  attr_reader :loc, :action, :changefreq, :priority, :lastmod
end

接下来,你们需要决定这个目标将如何开始。似乎你们都需要城市和“国家”主办:

class Entry
  attr_reader :loc, :action, :changefreq, :priority, :last mod

  def initialize(city, country_host_value)
    @loc = ActionController::Integration::Session.new.url_for(:controller =>  cities , :action =>  show , :city_name => city.name, :host => country_host_value)
    @changefreq = 0.8 # might actually want to just make this a constant
    @priority =  monthly  # another constant here???
    @lastmod = city.updated_at
  end
end

最后,在以下类别中添加你的XML建筑方法:

class Entry
  attr_reader :loc, :action, :changefreq, :priority, :last mod

  def initialize(city, country_host_value)
    @loc = ActionController::Integration::Session.new.url_for(:controller =>  cities , :action =>  show , :city_name => city.name, :host => country_host_value)
    @changefreq = 0.8 # might actually want to just make this a constant
    @priority =  monthly  # another constant here???
    @lastmod = city.updated_at
  end

  def write_entry_to_xml(xml_document)
    url = Nokogiri::XML::Node.new( "url" , xml_document )
    %w{loc changefreq priority lastmod}.each do |node|
      url <<  Nokogiri::XML::Node.new( node, xml_document ).tap do |n| 
        n.content = send(node)
      end  
    end
    url.to_xml
  end
end

既然您的原样被重新证明,你可以更新其他类别,以使用新的物体:

class WhateverClassThisIs
  def entry(city)
    Entry.new(city, @country_host.value)
  end
end

It s not clear how the XML writer method is being called, but you would need to update that as well to use the new write_entry_to_xml method, passing in the xml document as an argument.

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