Question

我正在使用Google的宝石google-adwords-api和ads-common（利用savon）在Ruby上开发AdWords API客户端。

如果违反某些AdWords政策，Savon会在其message中引发包含违规说明的例外情况。例如，违反商标政策：

[PolicyViolationError{
  super=PolicyViolationError.POLICY_ERROR @ operations[0].operand.ad.headline,
  key=PolicyViolationKey{policyName=trademark,violatingText=Xerox},
  externalPolicyName=Trademarked Term,
  externalPolicyUrl=,
  externalPolicyDescription=Due to trademark reasons, we do not allow advertisers to use 'Xerox' in their Google AdWords ads. This term may be trademarked either for a certain product or service category and may apply only in certain countries you have targeted.

  ,
  isExemtable=true,
  violatingParts=[Part{index=0, length=5}]}]

为了清晰起见，我对其进行了格式化，但最初在“目标”之后只有两个换行符，其余的是一行没有断行，只有逗号后面的空格，用“@”和自然语言文本。

如何以最简单的方式用Ruby解析这种消息？我希望这是一种标记语言，它有一个宝石。所以如果有更正确的方法，我不想使用正则表达式。

Answer 1

找到答案。它在Google的宝石google-adwords-api中撒谎。引发的例外是AdwordsApi::V201309::AdGroupAdService::ApiException类。除message属性外，它还具有errors属性，该属性包含结构形式的相同消息。所以不需要解析奇怪的标记语法。

> pp e.errors
[{:field_path=>"operations[0].operand.ad.headline",
  :trigger=>nil,
  :error_string=>"PolicyViolationError.POLICY_ERROR",
  :api_error_type=>"PolicyViolationError",
  :key=>{:policy_name=>"trademark", :violating_text=>"Sony"},
  :external_policy_name=>"Trademarked Term",
  :external_policy_url=>nil,
  :external_policy_description=>
   "Due to trademark reasons, we do not allow advertisers to use 'Sony' in their Google AdWords ads. This term may be trademarked either for a certain product or service category and may apply only in certain countries you have targeted.\n\n",
  :is_exemptable=>true,
  :violating_parts=>[{:index=>0, :length=>4}],
  :xsi_type=>"PolicyViolationError"}]

一个很好的哈希，我可以从中提取policy_name，violating_text和其他详细信息。

从AdWords API的响应中解析faultString

1 个答案: