legend3---9、项目的日志以及调试信息数据量非常大

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