我无法从我的shopify站点向我的rails应用程序发出跨域请求,该应用程序作为shopify应用程序安装。正如标题所述,问题在于我的服务器警告我它从我的rails应用程序返回的表单发出请求,其中包含相关的CSRF令牌。该请求使用jQuery的ajax方法完成,并且预检OPTIONS请求正在由rack-cors处理。警告:无法验证CSRF令牌的真实性
我在我的头文件中包含了X-CSRF-Token,如this answer中所建议的那样。我的帖子请求正在从表单中提取,所以我的问题未回答here。选项要求(在this question中提到)确实正在处理中,因为我刚刚通过询问this question进行了确认。我一直坚持这一点,并做了一些阅读。
我打算尝试通过代码片段来浏览流程代码片段,也许在我完成写这篇文章的时候,我会发现我的问题的答案(如果发生这种情况,那么你赢了'没有机会阅读本段)。
以下是我的控制器中的新建和创建方法。
class AustraliaPostApiConnectionsController < ApplicationController
# GET /australia_post_api_connections/new
# GET /australia_post_api_connections/new.json
def new
# initializing variables
respond_to do |format|
puts "---------------About to format--------------------"
format.html { render layout: false } # new.html.erb
format.json { render json: @australia_post_api_connection }
end
end
# POST /australia_post_api_connections
# POST /australia_post_api_connections.json
def create
@australia_post_api_connection = AustraliaPostApiConnection.new(params[:australia_post_api_connection])
respond_to do |format|
if @australia_post_api_connection.save
format.js { render layout: false }
else
format.js { render layout: false }
end
end
end
end
(我想知道在创建方法的respond_to代码块,但我不认为这会导致CSRF令牌验证失败。)
在我的应用程序,在/ AUSController /指数,我有一个Ajax化的GET请求,从/ AUSController/new返回表单。我的目标是能够从我的应用内完成跨域域的所有相同的调用。现在,GET请求适用于两者,因此我将忽略包含“新”表单。当HTML被最终呈现,表单元件具有以下内容:通过向form_authenticity_token
一个呼叫产生
<form method="post" id="new_australia_post_api_connection" data-remote="true" class="new_australia_post_api_connection" action="http://localhost:3000/australia_post_api_connections" accept-charset="UTF-8">
<!-- a bunch more fields here -->
<div class="field hidden">
<input type="hidden" value="the_csrf_token" name="authenticity_token" id="tokentag">
</div>
</div>
</div>
</form>
的CSRF令牌作为在引用mentioned above之一详述。
下一步是在两种情况下做不同的:
我的应用程序成功地在一个Ajax请求返回新形式的商店。我已经在应用程序中测试了这一点,即通过/ controller/index对/ controller/new进行ajax调用,然后提交表单。这像一个魅力。这是从一个成功的POST我的应用程序中返回的JS如下:
/ this is rendered when someone hits "calculate" and whenever the country select changes
:plain
$("#shipping-prices").html("#{escape_javascript(render(:partial => 'calculations', :object => @australia_post_api_connection))}")
这使得下面的部分,
= form_tag "/shipping_calculations", :method => "get" do
= label_tag :shipping_type
%br
- @service_list.each_with_index do |service, index|
- checked = true if index == 0
= radio_button_tag(:shipping_type, service[:code], checked)
= label_tag(:"shipping_type_#{service[:code]}", service[:name])
= " -- $#{service[:price]}"
%br
当我把它从同一个域,request.header
包含以下内容:
HTTP_X_CSRF_TOKEN
the_token_I_expect=
rack.session
{
"session_id"=>"db90f199f65554c70a6922d3bd2b7e61",
"return_to"=>"/",
"_csrf_token"=>"the_token_I_expect=",
"shopify"=>#<ShopifyAPI::Session:0x000000063083c8 @url="some-shop.myshopify.com", @token="some_token">
}
而且HTML呈现并很好地显示。
但是,从跨域来源看,事情变得更加复杂。这就是CORS和CSRF令牌和路由以及所有这些小细节开始蔓延的地方。特别是,当我进行ajax调用时,我使用以下脚本(它不在我的rails应用程序中,它驻留在跨域服务器上)。这个ajax请求的动作通过GET请求的回调函数附加到提交按钮上,为了完成,我已经包含了GET请求。
<script>
var host = "http://localhost:3000/"
var action = "australia_post_api_connections"
console.log("start")
$.ajax({
url: host + action,
type: "GET",
data: { weight: 20 },
crossDomain: true,
xhrFields: {
withCredentials: true
},
success: function(data) {
console.log("success");
$('#shipping-calculator').html(data);
$('#new_australia_post_api_connection')
.attr("action", host + action);
$('.error').hide();
$(".actions > input").click(function() {
console.log("click")
// validate and process form here
$('.error').hide();
var to_postcode = $("input#australia_post_api_connection_to_postcode").val();
// client side validation
if (to_postcode === "") {
$("#postcode > .error").show();
$("input#australia_post_api_connection_to_postcode").focus();
return false;
}
tokentag = $('#tokentag').val()
var dataHash = {
to_postcode: to_postcode,
authenticity_token: tokentag // included based on an SO answer
}
// included based on an SO answer
$.ajaxSetup({
beforeSend: function(xhr) {
xhr.setRequestHeader('X-CSRF-TOKEN', tokentag);
}
});
$.ajax({
type: "POST",
url: host + action,
data: dataHash,
success: function(data) {
$('#shipping-prices').html(data);
}
}).fail(function() { console.log("fail") })
.always(function() { console.log("always") })
.complete(function() { console.log("complete") });
return false;
});
}
}).fail(function() { console.log("fail") })
.always(function() { console.log("always") })
.complete(function() { console.log("complete") });
$(function() {
});
</script>
然而,当我把它从这个远程位置(Shopify的远处的山坡上),我发现在我的请求头下面,
HTTP_X_CSRF_TOKEN
the_token_I_expect=
rack.session
{ }
而且我收到了非常不愉快的NetworkError: 500 Internal Server Error
,而不是该200 OK!
,我想...在服务器端,我们发现日志抱怨说,
Started POST "/australia_post_api_connections" for 127.0.0.1 at 2013-01-08 19:20:25 -0800
Processing by AustraliaPostApiConnectionsController#create as */*
Parameters: {"weight"=>"20", "to_postcode"=>"3000", "from_postcode"=>"3000", "country_code"=>"AUS", "height"=>"16", "width"=>"16", "length"=>"16", "authenticity_token"=>"the_token_I_expect="}
WARNING: Can't verify CSRF token authenticity
Completed 500 Internal Server Error in 6350ms
AustraliaPostApiConnection::InvalidError (["From postcode can't be blank", "The following errors were returned by the Australia Post API", "Please enter Country code.", "Length can't be blank", "Length is not a number", "Height can't be blank", "Height is not a number", "Width can't be blank", "Width is not a number", "Weight can't be blank", "Weight is not a number"]):
app/models/australia_post_api_connection.rb:78:in `save'
缺乏一个rack.session
的似乎像我的痛苦的原因可疑...但我一直没能找到一个令人满意的答案。
最后,我已经看到适合包括我的机架设置,以防万一它有用。
# configuration for allowing some servers to access the aus api connection
config.middleware.use Rack::Cors do
allow do
origins 'some-shop.myshopify.com'
resource '/australia_post_api_connections',
:headers => ['Origin', 'Accept', 'Content-Type', 'X-CSRF-Token'],
:methods => [:get, :post]
end
end
非常感谢您阅读所有这些内容。我希望答案与那个空的rack.session
有关。至少,这将是令人满意的。
我只是读了这个:http://stackoverflow.com/questions/12630231/how-do-cors-and-access-control-allow-headers-work,我想知道那个答案是什么意思。 – Ziggy