我在Rails3应用程序上添加了一个API,它非常好用.
但我在 http://developer.github.com/v3/看到了以下Github api v3
但我在 http://developer.github.com/v3/看到了以下Github api v3
HTTP/1.1 422 Unprocessable Entity
Content-Length: 149
{
"message": "Validation Failed","errors": [
{
"resource": "Issue","field": "title","code": "missing_field"
}
]
}
我喜欢错误消息结构.但无法让它重现.
我怎样才能让我的apis做出类似的回应？
解决方法
您可以通过为JSON格式添加ActionController :: Responder来轻松实现该错误格式.有关此类的(极其模糊的)文档,请参阅
http://api.rubyonrails.org/classes/ActionController/Responder.html,但简而言之,您需要覆盖to_json方法.
在下面的示例中,我在ActionController中调用一个私有方法：Responder将构造json响应,包括您选择的自定义错误响应;所有你需要做的就是填补空白,真的：
def to_json
json,status = response_data
render :json => json,:status => status
end
def response_data
status = options[:status] || 200
message = options[:notice] || ''
data = options[:data] || []
if data.blank? && !resource.blank?
if has_errors?
# Do whatever you need to your response to make this happen.
# You'll generally just want to munge resource.errors here into the format you want.
else
# Do something here for other types of responses.
end
end
hash_for_json = { :data => data,:message => message }
[hash_for_json,status]
end