如何讓「清理」Rails方法留下一個HTML過去的空間？

Question

所以，我做了以下內容：

sanitize(self.content, :tags => %w("")) 

所以我考慮是這樣的：

<p>one two three four five six seven eight nine then eleven</p><p>twelve thirteen</p>

而且把它弄成這個樣子：

one two three four five six seven eight nine then eleventwelve thirteen

正如你可以看到這裏有一個問題：eleventwelve

我該怎麼做才能在eleven和twelve之間留下空間？

Answer 1

定製消毒劑:) [更新]

# models/custom_sanitizer.rb 

class CustomSanitizer 
    def do(html, *conditions) 
    document = HTML::Document.new(html)  
    export = ActiveSupport::SafeBuffer.new # or just String 
    parse(document.root) do |node| 
     if node.is_a?(HTML::Text) 
     if node.parent.is_a?(HTML::Tag) && match(node.parent, conditions) && export.present? 
      export << " " 
     end 
     export << node.to_s 
     end 
    end 
    export 
    end 

    private 

    def match(node, conditions = []) 
    eval(conditions.map {|c| "node.match(#{c})"}.join(" || ")) 
    end 

    def parse(node, &block) 
    node.children.each do |node| 
     yield node if block_given? 
     if node.is_a?(HTML::Tag) 
     parse(node, &block) 
     end 
    end 
    end 

end 

# Helper 

def custom_sanitize(*args) 
    CustomSanitizer.new.do(*args) 
end 

基本用法：

custom_sanitize(html, conditions) 
# where conditions is a hash or hashes like {:tag => "p", :attributes => {:class => "new_line"}} 

你例如：

custom_sanitize(html, {:tag => "p"}, {:tag => "div", :attributes => {:class => "title"}) 

：

html = "<p>one two three four five six seven eight nine then eleven</p><p>twelve thirteen</p>" 
custom_sanitize(html, :tag => "p") 
#=> "one two three four five six seven eight nine then eleven twelve thirteen" 

的多個條件實施例

=========

對於模型[簡版]

包括幫助到幫助文件你打開它對於環境的ActionView。如果你想在AR模型中使用這個方法，你應該在加載Rails之前將它包含在ActiveRecord :: Base中。但很容易直接使用CustomSanitizer類：

class Post < ActiveRecord::Base 

    def no_html_content 
    CustomSanitizer.new.do(content, :tag => "p") 
    end 

end 

# Post.find(1).no_html_content