blocks|key|400116|text|我在这里发布了我的Rails控制器的工作代码示例。它会进行验证。我希望这将是有用的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|400117|class+PaymentNotificationsController+<+ApplicationController
++protect_from_forgery+:except+=>+[:create]+#Otherwise+the+request+from+PayPal+wouldn't+make+it+to+the+controller
++def+create
++++response+=+validate_IPN_notification(request.raw_post)
++++case+response
++++when+"VERIFIED"
++++++#+check+that+paymentStatus=Completed
++++++#+check+that+txnId+has+not+been+previously+processed
++++++#+check+that+receiverEmail+is+your+Primary+PayPal+email
++++++#+check+that+paymentAmount/paymentCurrency+are+correct
++++++#+process+payment
++++when+"INVALID"
++++++#+log+for+investigation
++++else
++++++#+error
++++end
++++render+:nothing+=>+true
++end+
++protected+
++def+validate_IPN_notification(raw)
++++live+=+'https://ipnpb.paypal.com/cgi-bin'
++++sandbox+=+'https://ipnpb.sandbox.paypal.com/cgi-bin'
++++uri+=+URI.parse(sandbox+%2B+'/webscr?cmd=_notify-validate')
++++http+=+Net::HTTP.new(uri.host,+uri.port)
++++http.open_timeout+=+60
++++http.read_timeout+=+60
++++http.verify_mode+=+OpenSSL::SSL::VERIFY_PEER
++++http.use_ssl+=+true
++++response+=+http.post(uri.request_uri,+raw,
+++++++++++++++++++++++++'Content-Length'+=>+"#{raw.size}",
+++++++++++++++++++++++++'User-Agent'+=>+"My+custom+user+agent"
+++++++++++++++++++++++).body
++end
end|code-block|syntax|javascript|400118|Code的灵感来自Railscast+142，这篇文章的灵感来自Tanel+Suurhans|offset|length|400119|entityMap|0|LINK|mutability|MUTABLE|url|http://railscasts.com/episodes/142-paypal-notifications?view=asciicast|1|http://www.perfectline.ee/blog/correct-paypal-ipn-handling-with-rails^0|0|0|9|D|0|W|E|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@$I|X|J|Y|1|Z]|$I|10|J|11|1|12]]|A|$]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]|S|$5|N|O|P|A|$Q|T]]]]

I post here my working code sample for a Rails controller. It does verification. I hope it will be useful.

<pre><code>class PaymentNotificationsController &lt; ApplicationController
 protect_from_forgery :except =&gt; [:create] #Otherwise the request from PayPal wouldn't make it to the controller
 def create
 response = validate_IPN_notification(request.raw_post)
 case response
 when "VERIFIED"
 # check that paymentStatus=Completed
 # check that txnId has not been previously processed
 # check that receiverEmail is your Primary PayPal email
 # check that paymentAmount/paymentCurrency are correct
 # process payment
 when "INVALID"
 # log for investigation
 else
 # error
 end
 render :nothing =&gt; true
 end 
 protected 
 def validate_IPN_notification(raw)
 live = 'https://ipnpb.paypal.com/cgi-bin'
 sandbox = 'https://ipnpb.sandbox.paypal.com/cgi-bin'
 uri = URI.parse(sandbox + '/webscr?cmd=_notify-validate')
 http = Net::HTTP.new(uri.host, uri.port)
 http.open_timeout = 60
 http.read_timeout = 60
 http.verify_mode = OpenSSL::SSL::VERIFY_PEER
 http.use_ssl = true
 response = http.post(uri.request_uri, raw,
 'Content-Length' =&gt; "#{raw.size}",
 'User-Agent' =&gt; "My custom user agent"
 ).body
 end
end
</code></pre>

Code is inspired by <a href="http://railscasts.com/episodes/142-paypal-notifications?view=asciicast" rel="nofollow noreferrer">Railscast 142</a> and this post by <a href="http://www.perfectline.ee/blog/correct-paypal-ipn-handling-with-rails" rel="nofollow noreferrer">Tanel Suurhans</a>

blocks|key|400136|text|我已经在我的一个项目中实现了IPN，你的代码看起来很好。那么你面临的问题是什么呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|400137|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I have implement IPN in one of my project and your code look fine. So what is the problem u r facing ?

blocks|key|400173|text|看看ActiveMerchant+gem，它包括多个网关实现，其中就有Paypal's+IPN。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|400174|HTH|400175|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Shopify/active_merchant|1|https://github.com/Shopify/active_merchant/tree/master/lib/active_merchant/billing/integrations/paypal^0|2|E|0|Z|C|1|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]|$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

Have a look at the <a href="https://github.com/Shopify/active_merchant" rel="nofollow">ActiveMerchant</a> gem, which includes multiple gateway implementations, amongst which is <a href="https://github.com/Shopify/active_merchant/tree/master/lib/active_merchant/billing/integrations/paypal" rel="nofollow">Paypal's IPN</a>.

HTH

blocks|key|182264|text|PayPal的Ruby+Merchant+SDK提供了一个ipn_valid?布尔方法，让这对你来说超级简单。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|182265|def+notify
++@api+=+PayPal::SDK::Merchant.new
++if+@api.ipn_valid?(request.raw_post)++#+return+true+or+false
++++#+params+contains+the+data
++end
end|code-block|syntax|javascript|182266|https://github.com/paypal/merchant-sdk-ruby/blob/master/samples/IPN-README.md|182267|entityMap|0|LINK|mutability|MUTABLE|url^0|T|A|0|0|0|25|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|W|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|X|8|@]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|M|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|L]]]]

PayPal's Ruby Merchant SDK provides an <code>ipn_valid?</code> boolean method to make this super easy on you.

<pre><code>def notify
 @api = PayPal::SDK::Merchant.new
 if @api.ipn_valid?(request.raw_post) # return true or false
 # params contains the data
 end
end
</code></pre>

<a href="https://github.com/paypal/merchant-sdk-ruby/blob/master/samples/IPN-README.md" rel="nofollow">https://github.com/paypal/merchant-sdk-ruby/blob/master/samples/IPN-README.md</a>

blocks|key|182295|text|IPN+gem|type|unstyled|depth|inlineStyleRanges|entityRanges|data|182296|DWilke的Paypal+IPN+gem可以在这里找到：|182297|https://github.com/dwilkie/paypal|offset|length|182298|查看IPN模块。这是一个很好的代码：|182299|https://github.com/dwilkie/paypal/blob/master/lib/paypal/ipn/ipn.rb|182300|针对模拟器进行测试|182301|您可以在这里使用IPN模拟器进行测试：|182302|https://developer.paypal.com/webapps/developer/applications/ipn_simulator|182303|我使用ngrok在一个公共URL上公开localhost:3000，然后将模拟器指向它。|182304|entityMap|0|LINK|mutability|MUTABLE|url|1|2^0|0|0|0|X|0|0|0|0|1V|1|0|0|0|0|21|2|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@$F|15|G|16|1|17]]|A|$]]|$1|H|3|I|5|6|7|18|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|19|8|@]|9|@$F|1A|G|1B|1|1C]]|A|$]]|$1|L|3|M|5|6|7|1D|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|1E|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1F|8|@]|9|@$F|1G|G|1H|1|1I]]|A|$]]|$1|R|3|S|5|6|7|1J|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|U|$V|$5|W|X|Y|A|$Z|E]]|10|$5|W|X|Y|A|$Z|K]]|11|$5|W|X|Y|A|$Z|Q]]]]

<h2>IPN gem</h2>

DWilke's Paypal IPN gem can be found here:

<a href="https://github.com/dwilkie/paypal" rel="nofollow">https://github.com/dwilkie/paypal</a>

Check out the IPN module. It's nice code:

<a href="https://github.com/dwilkie/paypal/blob/master/lib/paypal/ipn/ipn.rb" rel="nofollow">https://github.com/dwilkie/paypal/blob/master/lib/paypal/ipn/ipn.rb</a>

<h2>Testing against the simulator</h2>

You can test it out against the IPN simulator here:

<a href="https://developer.paypal.com/webapps/developer/applications/ipn_simulator" rel="nofollow">https://developer.paypal.com/webapps/developer/applications/ipn_simulator</a>

I use ngrok to expose localhost:3000 on a public URL, then point the simulator at it.

blocks|key|182344|text|有一些PayPal+gem，其中至少有一个(paypal-sdk-rest)包含PayPal::SDK::Core::API::IPN.valid?方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|182345|下面是它的使用方法：|182346|class+YourController+<+ApplicationController

++skip_before_action+:verify_authenticity_token,+only:+:your_action

++def+your_action
++++verified+=+PayPal::SDK::Core::API::IPN.valid?(request.raw_post)

++++if+verified
++++++#+Verification+passed,+do+something+useful+here.
++++++render+nothing:+true,+status:+:ok
++++else
++++++#+Verification+failed!
++++++render+nothing:+true,+status:+:unprocessable_entity
++++end
++end

end|code-block|syntax|javascript|182347|entityMap^0|14|Y|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

There are a few PayPal gems, and at least one of them (paypal-sdk-rest) includes the <code>PayPal::SDK::Core::API::IPN.valid?</code> method.

Here's how to use it:

<pre><code>class YourController &lt; ApplicationController

 skip_before_action :verify_authenticity_token, only: :your_action

 def your_action
 verified = PayPal::SDK::Core::API::IPN.valid?(request.raw_post)

 if verified
 # Verification passed, do something useful here.
 render nothing: true, status: :ok
 else
 # Verification failed!
 render nothing: true, status: :unprocessable_entity
 end
 end

end
</code></pre>

There are official code samples for several languages but couldn't find one for Rails.

Is there a PayPal IPN code sample for Ruby on Rails?

有几种语言的官方代码示例，但找不到适用于Rails的。

问有没有Ruby on Rails的PayPal IPN代码示例？
EN

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