ActiveMerchant PayPal Express 可能存在错误？
我有点困惑，不知怎的，我能够更改购买的金额：
首先我设置我的购买，
@setup_response = gateway.setup_purchase(
10*100,
:ip => request.remote_ip,
:return_url => url_for(:controller => "payments", :action => 'confirm', :only_path => false),
:cancel_return_url => url_for(:controller => "payments", :action => 'error', :only_path => false),
:currency => 'EUR',
:email => current_user.email,
:no_shipping => true,
:items => items
)
稍后我进行购买：
purchase = gateway.purchase(
500*100,
:ip => request.remote_ip,
:payer_id => params[:payer_id],
:token => params[:token],
:currency => 'EUR'
)
如您所见，我已将金额从 10 -> 更改为 10。安装程序/用户在购买时同意 1000，并且它在 Paypal 沙箱中确实有效。
我觉得这真的很奇怪。有人能证实这一点吗？这不应该发生吗？ 这也许只能在沙盒中实现？
I am a little bit confused, somehow I am able to change the amount of the purchase:
First I setup my purchase,
@setup_response = gateway.setup_purchase(
10*100,
:ip => request.remote_ip,
:return_url => url_for(:controller => "payments", :action => 'confirm', :only_path => false),
:cancel_return_url => url_for(:controller => "payments", :action => 'error', :only_path => false),
:currency => 'EUR',
:email => current_user.email,
:no_shipping => true,
:items => items
)
Later I do the purchase:
purchase = gateway.purchase(
500*100,
:ip => request.remote_ip,
:payer_id => params[:payer_id],
:token => params[:token],
:currency => 'EUR'
)
As you can see I have changed the amount from 10 -> setup/user agreed to 1000 when purchasing and it did work in the Paypal Sandbox.
I think this is really strange. Can anybody confirm this? This should not happen?
Is this perhaps only possible in the Sandbox?
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可以肯定的是，Paypal Express Checkout 并不要求
DoExpressCheckoutPayment中的金额（这是setup_purchase映射到的）与SetExpressCheckout中的金额相同。引用 Paypal 文档：Pretty sure Paypal Express Checkout does not require the amount at
DoExpressCheckoutPayment(which is whatsetup_purchasemaps to) to be the same as that atSetExpressCheckout. To quote Paypal's documentation:您在设置和购买之间有一些回旋余地 - 这是为了允许人们更改订单、折扣等。
不要冒险向人们收取的费用超出您明确规定的金额 - Paypal 很快就会给人们退款所以从长远来看你最终会失败。
You are allowed some leeway between the set-up and the purchase - this is to allow people changing their order, discounts, etc.
Don't take the risk of billing people more than you clearly state - Paypal are very quick to give people refunds so you'll end up losing out in the long run.