Flash error message

Введение

Flash messages are used to notify the user about the state of actions he/she made or simply show information to the users. These kinds of messages can be generated using this component.

Adapters

This component uses adapters that dictate how messages are displayed or sent to the view. There are two adapters available but you can easily create your own adapter using the PhalconFlashFlashInterface interface.

Direct

PhalconFlashDirect can be used to directly output messages set in the component. This is useful in instances where you need to show data back to the user in the current request that does not employ any redirects.

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

$flash->error('Something went wrong');

Session

PhalconFlashSession can be used to output messages set in the component. The component transparently stores the messages in the session to be used after a redirect.

<?php

use PhalconEscaper;
use PhalconFlashSession as FlashSession;
use PhalconSessionAdapterStream;
use PhalconSessionManager;

$session = new Manager();
$files = new Stream(
    [
        'savePath' => '/tmp',
    ]
);
$session->setHandler($files);

$escaper = new Escaper();
$flash   = new FlashSession($escaper, $session);

$flash->error('Something went wrong');

and in your view

<?php echo $flash->output(); ?>

or when using Volt

Imagine a login form that you need to validate the username and password and inform the user if their credentials are correct. The PhalconFlashSession can be used to perform this task as follows:

• User enters credentials and clicks Login — The application posts the data to the loginAction of our controller — The application checks the data and the combination is not correct — The application stores the Incorrect Credentials message in the flash messenger — The application redirects the user back to the login page (/login) — The Flash messenger still holds the message Incorrect Credentials and will display it on the screen.

The example below displays this behavior in the controller. If an error occurs, whether this is an actual application error or a result of incorrect credentials, the code sets the messages using $this->flash->error().

<?php

namespace MyApp;

use PhalconFlashSession;
use PhalconHttpRequest;
use PhalconHttpResponse;
use PhalconMvcController;
use PhalconMvcView;
use VokuroAuthAuth; 
use VokuroModelsUsers;
use VokuroModelsResetPasswords;

/**
 * Controller used handle non-authenticated session actions like 
 * login/logout, user signup, and forgotten passwords
 *
 * @property Auth     $auth
 * @property Request  $request
 * @property Response $response
 * @property Session  $flashSession
 * @property View     $view
 */
class SessionController extends Controller
{
    /**
     * Starts a session in the admin backend
     */
    public function loginAction()
    {
        $form = new LoginForm();

        try {
            if (true !== $this->request->isPost()) {
                // ....
            } else {
                $postData = $this->request->getPost();
                if (true !== $form->isValid($postData)) {
                    // Flash
                    foreach ($form->getMessages() as $message) {
                        $this->flashSession->error($message);
                    }
                } else {
                    $email    = $this->request->getPost('email');
                    $password = $this->request->getPost('password');
                    $remember = $this->request->getPost('remember');

                    $this->auth->check(
                        [
                            'email'    => $email,
                            'password' => $password,
                            'remember' => $remember,
                        ]
                    );

                    return $this->response->redirect('users');
                }
            }
        } catch (AuthException $e) {
            // Flash
            $this->flashSession->error($e->getMessage());
        }

        $this->view->form = $form;
    }
}

and in your view

<?php echo $flashSession->output(); ?>

or when using Volt

{{ flashSession.output() }}

NOTE: In the above example, the flashSession service has been already registered in the DI container. For more information about this please check the relevant section below.

Styling

The component (irrespective of adapter) offers automatic styling of messages on screen. This means that messages will be wrapped in <div> tags. There is also a mapping of message type to CSS class that you can take advantage of based on the stylesheet you use in your application. By default the component uses the following mapping:

By using the default classes, you can style errorMessage accordingly in the stylesheet of your application to make it appear the way you want it to. It is common for error messages to have a red background for instance so that they stand out.

An error message:

$flash->error('Error message');

will produce:

<div class="errorMessage">Error message</div>

If you do not wish to use the default classes, you can use the setCssClasses() method to replace the mapping of type of message to class name.

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

var_dump(
    $flash->getCssClasses()
);

// [
//     "error"   => "errorMessage",
//     "notice"  => "noticeMessage",
//     "success" => "successMessage",
//     "warning" => "warningMessage",
// ];


$cssClasses = [
    'error'   => 'alert alert-danger',
    'success' => 'alert alert-success',
    'notice'  => 'alert alert-info',
    'warning' => 'alert alert-warning',
];

$flash->setCssClasses($cssClasses);

and then calling

$flash->error('Error message');

will produce:

<div class="alert alert-danger">Error message</div>

NOTE: The setCssClasses() returns back the object so you can use in a more fluent interface by chaining calls.

The component also allows you to specify a different template, so that you can control the HTML produced by the component. The setCustomTemplate() and getCustomTemplate() expose this functionality. The template needs to have two placeholders:

• %cssClass% — where the CSS class will be injected
• %message% — where the message will be injected

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

$template = '<span class="%cssClass%">%message%</span>';

$flash->setCustomTemplate($template);

and then calling

$flash->error('Error message');

will produce:

<span class="myErrorClass">Error message</span>

NOTE: The setCustomTemplate() returns back the object so you can use in a more fluent interface by chaining calls.

Messages

As mentioned above, the component has different types of messages. To add a message to the component you can call message() with the type as well as the message itself. The types of messages are:

• error
• notice
• success
• warning

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

$flash->message('error', 'Error message');

While you can pass the type as the first parameter when calling message() you can also use the relevant helper methods that do that for you:

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

$flash->error('Error message');
$flash->notice('Notice message');
$flash->success('Success message');
$flash->warning('Warning message');

If your application requires it, you might want to clear the messages at some point when building the response. To do so you can use the clear() method.

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

$flash->error('Error message');

$flash->clear();

NOTE: clear() works only when the implicit flush is disabled (setImplicitFlush(false))

Implicit Flush

By default implicit flushing is set to true. You can however turn it off by using setImplicitFlush(false). The purpose of this method is to set whether the output must be implicitly flushed to the output or returned as string

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

echo $flash->getImplicitFlush(); // true

$flash->error('Error'); // No output

echo $flash
    ->setImplicitFlush(false) 
    ->error('Error Message') // 'Error Message'
;

NOTE: The setImplicitFlush() returns back the object so you can use in a more fluent interface by chaining calls.

NOTE: When using the PhalconFlashDirect component, to directly show results on the page you must set setImplicitFlush() to false.

Escaping

By default, the component will escape the contents of the message. There might be times however that you do not wish to escape the contents of your messages. You can use the setAutoescape(false);

<?php

use PhalconEscaper;
use PhalconFlashDirect;

$escaper = new Escaper();
$flash   = new Direct($escaper);

echo $flash->getAutoescape(); // true

$flash
    ->setAutoescape(false)
    ->error('<h1>Error</h1>')
;

will produce

<div class="errorMessage">&lt;h1&gt;Error&lt;/h1&gt;</div>

NOTE: The setAutoescape() returns back the object so you can use in a more fluent interface by chaining calls.

Dependency Injection

If you use the PhalconDiFactoryDefault container, the PhalconFlashDirect is already registered for you with the name flash. Additionally the PhalconFlashSession is already registered for you with the name flashSession.

An example of the registration of the service as well as accessing it is below:

Direct

<?php

use PhalconDi;
use PhalconEscaper;
use PhalconFlashDirect;

$container = new Di();
$escaper   = new Escaper();

$container->set(
    'flash',
    function () use ($escaper) {
        return new Direct($escaper);
    }
);

Session

<?php

use PhalconDi;
use PhalconEscaper;
use PhalconFlashSession as FlashSession;
use PhalconSessionAdapterStream;
use PhalconSessionManager;

$container = new Di();
$escaper   = new Escaper();
$session   = new Manager();
$files     = new Stream(
    [
        'savePath' => '/tmp',
    ]
);
$session->setHandler($files);

$container->set(
    'flashSession',
    function () use ($escaper, $session) {
        return new FlashSession($escaper, $session);
    }
);

NOTE You do not need to pass the escaper or the session in the constructor. If you use the Di container and those services are already register in it, they will be used internally. This is another way of instantiating the components.

You can now use the component in a controller (or a component that implements PhalconDiInjectable)

<?php

namespace MyApp;

use PhalconFlashDirect;
use PhalconMvcController;

/**
 * Invoices controller
 *
 * @property Direct $flash
 */
class InvoicesController extends Controller
{
    public function indexAction()
    {

    }

    public function saveAction()
    {
        $this->flash->success('The post was correctly saved!');
    }
}

Laravel 8 shows a flash message example; This tutorial will provide you a complete guide on how to show flash messages with redirect in laravel 8 app.

Flash messages are very important things in any laravel 8 web or app. Alert messages are considered valuable from a user experience perspective. Sometimes, you need to use various types of flash message notification like alert-success, alert danger, alert info, alert warning messages with bootstrap in laravel 8 app. So, here, you will learn the various method to show or display flash error, warning, info, and success message in laravel 8 applications.

This laravel 8 flash message example tutorial will add several ways to give a flash message like redirect with success message, redirect with an error message, redirect with a warning message, and redirect with info message. And as well as, use a bootstrap flash alert layout that way it displays a pretty layout.

Flash Messages in Laravel 8

• Success Flash Message
• Error Flash Message
• Warning Flash Message
• Info Flash Message
• Sweet Alert Flash Success Message
• Sweet Alert Flash Error Message

1 – Success Flash Message

First of all, we need to add the below code in your HTML files:

@if(Session::has('success'))
    <div class="alert alert-success">
        {{Session::get('success')}}
    </div>
@endif

The second thing, When you send the success message. So you can use the below code in your controller:

return Redirect::to("/")->withSuccess('Success message');

The success flash message will look like:

2 – Error Flash Message

If you want to display an error message in your blade views, so you can add the below code in your blade file:

@if(Session::has('fail'))
    <div class="alert alert-danger">
       {{Session::get('fail')}}
    </div>
@endif

The second thing, add the below code in your controller, where you want to send the warning message:

 return Redirect::to("/")->withFail('Error message');

The error flash message will look like:

3 – Warning Flash Message

To display an warning message in your blade views, so you can add the below code in your blade file:

@if(Session::has('warning'))
    <div class="alert alert-danger">
       {{Session::get('warning')}}
    </div>
@endif

The second thing, add the below code in your controller, where you want to send the error message:

return Redirect::to("/")-->with('warning',"Don't Open this link");

The warning flash message will look like:

4 – Info Flash Message

To display an info message in your blade views, so you can add the below code in your blade file:

@if(Session::has('info'))
    <div class="alert alert-danger">
       {{Session::get('info')}}
    </div>
@endif

The second thing, add the below code in your controller, where you want to send the info message:

return Redirect::to("/")-->with('info',"Don't Open this link");

The Info flash message will look like:

Now, you will learn how to use sweet alert message in your laravel application. So, first of all, you need to include sweet alert CDN or sweet alert js library in your laravel 8 application:

5 – Sweet Alert Flash Success Message

If you want to show a success message with sweet alert. So you can use the below code in your blade view files:

   @if(Session::has('success'))
     <script type="text/javascript">
        swal({
            title:'Success!',
            text:"{{Session::get('success')}}",
            timer:5000,
            type:'success'
        }).then((value) => {
          //location.reload();
        }).catch(swal.noop);
    </script>
    @endif

If you use the above code for a success message, this message automatically hides after 5 seconds.

The sweet alert-success message will look like:

6 – Sweet Alert Flash Error Message

If you want to show an error message with a sweet alert. So you can use the below code in your blade view files:

   @if(Session::has('fail'))
   <script type="text/javascript">
      swal({
          title:'Oops!',
          text:"{{Session::get('fail')}}",
          type:'error',
          timer:5000
      }).then((value) => {
        //location.reload();
      }).catch(swal.noop);
  </script>
  @endif

If you use the above code for an error message, this message automatically hides after 5 seconds.

The sweet alert error message will look like:

Conclusion

Laravel 8 flash message tutorial, you have learned how to implement flash messages in laravel 8 applications.

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GOOGLE TRANSLATE
привет (жаль я только говорить по-английски Используя Google translatefor говорим сейчас)

я получил заранее 8gb флэш-диска, которые говорят на 8gb, но на самом деле 4 Гб

об использовании H2testw 1.4 выяснилось, что вспышка только 4 Гб

так что я использовал чип гений он показал это

VID 0011

PID 7788

Чип Производитель: Alcor

Чип Часть-номер: f8308

я также открыл крышку флэш-диска было написано там

вспышка контроллер: fc8908
NAND-память: ничего не написано

так что я скачал этот инструмент: Alcor_FC8908_FCMpTool_v05.00.05

он обнаружил мою вспышку и нажал на кнопку запуска он отформатирован вспышкой, но VID PID были изменены и вспышка не работает должным образом показывает, пожалуйста, вставьте диск в дисковод

Теперь чип гений показывает

PnP Device ID: VID = 058F PID = 1234
Серийный номер: 5 & & & & E4D4C9B 0 & & 5
Редакция: 7,76

Тип устройства: стандартное устройство USB — USB2.0 High-Speed

Чип Производитель: Alcor
Чип Часть-номер: AU6981 ~ AU6985

Продукт Vendor: (N / A)
Модель продукта: (N / A)

Сейчас я получаю эту ошибку, когда я подключить вспышку в Alcor_FC8908_FCMpTool_v05.00.05 30400: неизвестный ID ошибки вспышки [0]: 0x45, 0xD7, 0xD8, 0xC2, 0x76, 0xD5

это beacause PID VID были изменены и чип гений показывает другой контроллер вспышки

оригинальный контроллер вспышки напечатаны на вспышки

вспышка контроллер: fc8908 на флэшку wriiten на черный квадрат

Заранее спасибо за любую помощь

ENGLISH

hello  (sorry i only speak english using google translatefor talking now )

i got a advance 8gb flash drive which say’s 8gb  but actually is a 4gb

on using H2testw 1.4 it found out that the flash is only a 4gb

so i used chip genius it showed this

vid 0011   

pid 7788

Chip Vendor: Alcor

Chip Part-Number: f8308

i also opened the flash drive cover it was written in there

flash controller: fc8908
nand memory:  nothing is written

so i downloaded this tool: Alcor_FC8908_FCMpTool_v05.00.05

it detected my flash and clicked on the start button it formatted the flash but vid pid got changed and flash does not work properly shows please insert disk into drive

now chip genius shows 

PnP Device ID: VID = 058F PID = 1234
Serial Number: 5&&E4D4C9B&&0&&5
Revision: 7.76

Device Type: Standard USB device — USB2.0 High-Speed

Chip Vendor: Alcor
Chip Part-Number: AU6981~AU6985

Product Vendor: (N/A)
Product Model: (N/A)

now i get this error when i plug the flash in Alcor_FC8908_FCMpTool_v05.00.05 30400: unknown flash error ID[0]: 0x45,0xD7,0xD8,0xC2,0x76,0xD5   
Is it beacause the vid pid got changed and chip genius shows a different flash controller orginal flash controller printed on flash is flash controller: fc8908 on flash drive wriiten on black square

thanks in advance for any help

• Основы Flask
• Что это такое? Простое WSGI-приложение
• Использование шаблонов страниц сайта
• Контекст приложения и контекст запроса
• Функция url_for и переменные URL-адреса
• Подключение внешних ресурсов и работа с формами
• Мгновенные сообщения — flash, get_flashed_messages
• Декоратор errorhandler, функции redirect и abort

• Главная
• Flask
• Основы Flask

from flask import Flask, render_template, request, flash

if len(request.form['username']) > 2:
    flash('Сообщение отправлено')
else:
    flash('Ошибка отправки')

{% for msg in get_flashed_messages() %}
<div class="flash">{{msg}}</div>
{% endfor %}

app.config['SECRET_KEY'] = 'fdgdfgdfggf786hfg6hfg6h7f'

.flash {padding: 10px;}
.flash.success {
         border: 1px solid #21DB56;
         background: #AEFFC5;
}
.flash.error {
         border: 1px solid #FF4343;
         background: #FF9C9C;
}

if len(request.form['username']) > 2:
    flash('Сообщение отправлено', category='success')
else:
    flash('Ошибка отправки', category='error')

{% for cat, msg in get_flashed_messages(True) %}
<div class="flash {{cat}}">{{msg}}</div>
{% endfor %}