Html 如何在常规 Ruby 代码（非导轨）中使用 strip_tags？
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How can I use strip_tags in regular Ruby code (non-rails)?
提问by sanitizeme
I need to turn HTML into plain text. There's a nice function that does that in ActionView's SanitizeHelper, but I have trouble understanding how I can reference it and use it in a simple test.rb file.
我需要将 HTML 转换为纯文本。ActionView 的 SanitizeHelper 中有一个很好的函数可以做到这一点，但我无法理解如何引用它并在简单的 test.rb 文件中使用它。
http://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html
http://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html
I would like to be able to call strip_tags("<b>lol</b>") => "lol"
我希望能够打电话 strip_tags("<b>lol</b>") => "lol"
回答by santuxus
回答by John
ActiveSupport is the only Rails framework that supports cherry-picking individual components. The other frameworks, including ActionView, must be required en-masse:
ActiveSupport 是唯一支持挑选单个组件的 Rails 框架。其他框架，包括 ActionView，必须是整体需要的：
require 'action_view'
Note that this require won't necessarily load all of ActionView. Barring situations where thread-safety requires that autoloads happen eagerly, it merely sets up autoloads and requires common dependencies. That means that following the require, if you reference, e.g. ActionView::Helpers::SanitizeHelper, it will cause action_view/helpers /sanitize_helper.rbto be required.
请注意，此 require 不一定会加载所有 ActionView。除非线程安全要求自动加载急切地发生，否则它仅设置自动加载并需要通用依赖项。这意味着遵循 require ，如果您引用，例如ActionView::Helpers::SanitizeHelper，它将导致action_view/helpers /sanitize_helper.rb被要求。
Therefore the correct, supported way to accomplish what you desire using ActionView is the following:
因此，使用 ActionView 完成您想要的正确的、受支持的方法如下：
require 'action_view'
class Test < Test::Unit::TestCase # or whatever
include ActionView::Helpers::SanitizeHelper
def my_test
assert_equal "lol", strip_tags("<b>lol</b>")
end
end
This isn't well-documented; I based this answer primarily off of the discussion on this issue.
这没有很好的记录；我的这个答案主要基于对这个问题的讨论。
回答by khelll
I believe this should be enough:
我相信这应该足够了：
"<b>lol</b>".gsub(/<[^>]*>/ui,'') #=> lol
You can use Nokogiri as well:
您也可以使用 Nokogiri：
require 'rubygems'
require 'nokogiri'
doc = Nokogiri::HTML("<b>lol</b>")
doc.text #=> "lol"
You still can go with the Rails one by doing something like:
您仍然可以通过执行以下操作来使用 Rails one：
require 'rubygems'
require 'action_view'
class Foo
include ActionView::Helpers::SanitizeHelper
def test
strip_tags("<b>lol</b>")
end
end
f = Foo.new
puts f.test #=> lol
回答by Malik Shahzad
If you don't use it very often, then you can use:
如果你不经常使用它，那么你可以使用：
ActionView::Base.full_sanitizer.sanitize(your_html_string)
else you can define a method in test_helper.rb file like:
否则你可以在 test_helper.rb 文件中定义一个方法，如：
def strip_html_tags(string)
ActionView::Base.full_sanitizer.sanitize(string)
end
And then in your test.rb file, use this like:
然后在你的 test.rb 文件中，像这样使用：
strip_html_tags(your_html_string)
回答by Aleks
The question is quite old, but you can call it in your test.rblike this:
这个问题很老了，但你可以这样称呼它test.rb：
ActionController::Base.helpers.strip_tags("<b>lol</b>") => "lol"
回答by shilovk
With this example:
用这个例子：
"<p><i>example</i></p>"
This helped me:
这帮助了我：
ActionView::Base.full_sanitizer.sanitize(Nokogiri::HTML(example).text)
Output:
输出：
example
回答by Samuel
Ideally you would require and include ActionView::Helpers::SanitizeHelperbut there are several dependencies that don't get included when you do that. You can require them yourself to be able to use strip_tags.
理想情况下，您需要并包含，ActionView::Helpers::SanitizeHelper但是当您这样做时，有几个依赖项不会被包含在内。您可以要求他们自己使用strip_tags.
require 'erb'
require 'active_support'
require 'active_support/core_ext/class/attribute_accessors'
require 'active_support/core_ext/string/encoding'
require 'action_view/helpers/capture_helper'
require 'action_view/helpers/sanitize_helper'
include ActionView::Helpers::SanitizeHelper
strip_tags("<b>lol</b>") # => "lol"
This is assuming you have rails 3 gems installed.
这是假设您安装了 rails 3 gems。
回答by Alexandr Yakubenko
HTML::FullSanitizer.new.sanitize('<b>lol</b>') # => "lol"
