Rails:捕获rails控制器中的所有异常
Rails:捕获rails控制器中的所有异常
提问于 2010-09-12 16:01:09
有没有办法在rails控制器中捕获所有未捕获的异常，如下所示：
def delete
schedule_id = params[:scheduleId]
begin
Schedules.delete(schedule_id)
rescue ActiveRecord::RecordNotFound
render :json => "record not found"
rescue ActiveRecord::CatchAll
#Only comes in here if nothing else catches the error
end
render :json => "ok"
end谢谢
回答 5
Stack Overflow用户
回答已采纳
发布于 2010-09-12 16:36:16
begin
# do something dodgy
rescue ActiveRecord::RecordNotFound
# handle not found error
rescue ActiveRecord::ActiveRecordError
# handle other ActiveRecord errors
rescue # StandardError
# handle most other errors
rescue Exception
# handle everything else
raise
endStack Overflow用户
发布于 2011-07-21 16:09:26
您还可以定义rescue_from方法。
class ApplicationController < ActionController::Base
rescue_from ActionController::RoutingError, :with => :error_render_method
def error_render_method
respond_to do |type|
type.xml { render :template => "errors/error_404", :status => 404 }
type.all { render :nothing => true, :status => 404 }
end
true
end
end根据您的目标，您可能还希望考虑不在每个控制器的基础上处理异常。相反，可以使用像exception_handler gem这样的工具来一致地管理对异常的响应。此外，此方法还将处理发生在中间件层的异常，如请求解析或应用程序看不到的数据库连接错误。exception_notifier gem可能也会引起人们的兴趣。
Stack Overflow用户
发布于 2015-05-18 21:14:13
您可以按类型捕获异常：
rescue_from ::ActiveRecord::RecordNotFound, with: :record_not_found
rescue_from ::NameError, with: :error_occurred
rescue_from ::ActionController::RoutingError, with: :error_occurred
# Don't resuce from Exception as it will resuce from everything as mentioned here "http://stackoverflow.com/questions/10048173/why-is-it-bad-style-to-rescue-exception-e-in-ruby" Thanks for @Thibaut Barrère for mention that
# rescue_from ::Exception, with: :error_occurred
protected
def record_not_found(exception)
render json: {error: exception.message}.to_json, status: 404
return
end
def error_occurred(exception)
render json: {error: exception.message}.to_json, status: 500
return
end页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/3694153
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