legend3---9、项目的日志以及调试信息数据量非常大

一、总结

一句话总结：

legend2我开发调试，最近竟然发现日志等的信息有1.5G，数据量实在太大

1、juqery如何找后代？

children方法只找直系后代，find方法找所有后代
$(function () {

    $('.hidden_panel').click(function () {

        $(this).children(".panel-body").toggle();

        $(this).children(".panel-footer").toggle();

        $(this).find(".panel-heading_symbol_left").toggle();

        $(this).find(".panel-heading_symbol_down").toggle();

    });

});

2、chrome中如何查看元素的hover事件？

styles里面有hover，给它选中

3、lavarel中create方法和insert方法插入数据的区别？

create方法和save方法会自动更新时间戳字段，但是insert方法却不会

4、lavarel中链式操作也就是and关系？

比如：$userQuestions=UserQuestion::where('uq_u_id',$u_id)->whereIn('uq_q_id',$questions_ids)->get();
对应于：select * from `user_questions` where `uq_u_id` = 1 and `uq_q_id` in (116, 117, 118, 119, 120, 121, 122)

5、用php直接控制页面元素的好处是？

不用担心用户在页面的非法操作

6、lavarel日志里面记录的是什么信息，及日志的使用场景？

错误信息，以及错误完整的堆栈信息
出错排查错误的时候可以用
[2019-10-13 00:14:53] local.ERROR: Use of undefined constant blog_category_per - assumed 'blog_category_per' (this will throw an Error in a future version of PHP) (View: /home/vagrant/legend3/resources/views/home/exercise/index.blade.php) {"exception":"[object] (ErrorException(code: 0): Use of undefined constant blog_category_per - assumed 'blog_category_per' (this will throw an Error in a future version of PHP) (View: /home/vagrant/legend3/resources/views/home/exercise/index.blade.php) at /home/vagrant/legend3/storage/framework/views/b2763979b5ddcc982c25fd62c8d9bb0f624d8031.php:114, ErrorException(code: 0): Use of undefined constant blog_category_per - assumed 'blog_category_per' (this will throw an Error in a future version of PHP) at /home/vagrant/legend3/storage/framework/views/b2763979b5ddcc982c25fd62c8d9bb0f624d8031.php:114)

[stacktrace]

#0 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php(45): Illuminate\\View\\Engines\\CompilerEngine->handleViewException(Object(ErrorException), 1)

#1 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php(59): Illuminate\\View\\Engines\\PhpEngine->evaluatePath('/home/vagrant/l...', Array)

#2 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/View/View.php(142): Illuminate\\View\\Engines\\CompilerEngine->get('/home/vagrant/l...', Array)

#3 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/View/View.php(125): Illuminate\\View\\View->getContents()

#4 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/View/View.php(90): Illuminate\\View\\View->renderContents()

#5 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Http/Response.php(42): Illuminate\\View\\View->render()

#6 /home/vagrant/legend3/vendor/symfony/http-foundation/Response.php(202): Illuminate\\Http\\Response->setContent(Object(Illuminate\\View\\View))

#7 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Router.php(750): Symfony\\Component\\HttpFoundation\\Response->__construct(Object(Illuminate\\View\\View))

#8 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Router.php(722): Illuminate\\Routing\\Router::toResponse(Object(Illuminate\\Http\\Request), Object(Illuminate\\View\\View))

#9 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Router.php(682): Illuminate\\Routing\\Router->prepareResponse(Object(Illuminate\\Http\\Request), Object(Illuminate\\View\\View))

#10 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\\Routing\\Router->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#11 /home/vagrant/legend3/app/Http/Middleware/Home/User.php(22): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#12 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): App\\Http\\Middleware\\Home\\User->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#13 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#14 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php(41): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#15 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Routing\\Middleware\\SubstituteBindings->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#16 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#17 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(75): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#18 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Foundation\\Http\\Middleware\\VerifyCsrfToken->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#19 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#20 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(49): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#21 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\View\\Middleware\\ShareErrorsFromSession->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#22 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#23 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(63): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#24 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Session\\Middleware\\StartSession->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#25 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#26 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(37): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#27 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Cookie\\Middleware\\AddQueuedCookiesToResponse->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#28 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#29 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(66): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#30 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Cookie\\Middleware\\EncryptCookies->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#31 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#32 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(104): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#33 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Router.php(684): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))

#34 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Router.php(659): Illuminate\\Routing\\Router->runRouteWithinStack(Object(Illuminate\\Routing\\Route), Object(Illuminate\\Http\\Request))

#35 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Router.php(625): Illuminate\\Routing\\Router->runRoute(Object(Illuminate\\Http\\Request), Object(Illuminate\\Routing\\Route))

#36 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Router.php(614): Illuminate\\Routing\\Router->dispatchToRoute(Object(Illuminate\\Http\\Request))

#37 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(176): Illuminate\\Routing\\Router->dispatch(Object(Illuminate\\Http\\Request))

#38 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(30): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}(Object(Illuminate\\Http\\Request))

#39 /home/vagrant/legend3/vendor/barryvdh/laravel-debugbar/src/Middleware/InjectDebugbar.php(65): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#40 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Barryvdh\\Debugbar\\Middleware\\InjectDebugbar->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#41 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#42 /home/vagrant/legend3/vendor/fideloper/proxy/src/TrustProxies.php(57): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#43 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Fideloper\\Proxy\\TrustProxies->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#44 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#45 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(31): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#46 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#47 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#48 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(31): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#49 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#50 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#51 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#52 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Foundation\\Http\\Middleware\\ValidatePostSize->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#53 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#54 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/CheckForMaintenanceMode.php(62): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#55 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(163): Illuminate\\Foundation\\Http\\Middleware\\CheckForMaintenanceMode->handle(Object(Illuminate\\Http\\Request), Object(Closure))

#56 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php(53): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))

#57 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(104): Illuminate\\Routing\\Pipeline->Illuminate\\Routing\\{closure}(Object(Illuminate\\Http\\Request))

#58 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(151): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))

#59 /home/vagrant/legend3/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(116): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter(Object(Illuminate\\Http\\Request))

#60 /home/vagrant/legend3/public/index.php(55): Illuminate\\Foundation\\Http\\Kernel->handle(Object(Illuminate\\Http\\Request))

#61 {main}

"}

7、软件的快捷键不记得了，完全不影响？

工具栏里面常用的功能都有

8、lavarel从mysql数据库中随机取数？

inRandomOrder()：$userQuestions=UserQuestion::where($map)->inRandomOrder()->take($neededQuestionNum)->get();

inRandomOrder
inRandomOrder 方法被用来将结果随机排序。例如，你可以使用此方法随机找到一个用户。

$randomUser = DB::table('users')
                ->inRandomOrder()
                ->first();

9、在前端处理数据或者再查数据表操作合适么？

应该在模型中就把数据处理完善了，不应该在前端再来处理数据

10、很多循环操作其实都是可以用数组来代替的？

比如把数组的索引换成id，这样就可以直接通过id找数据，而不需要循环

二、内容在总结中

 

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