- Yii Tutorial
- Yii - Home
- Yii - Overview
- Yii - Installation
- Yii - Create Page
- Yii - Application Structure
- Yii - Entry Scripts
- Yii - Controllers
- Yii - Using Controllers
- Yii - Using Actions
- Yii - Models
- Yii - Widgets
- Yii - Modules
- Yii - Views
- Yii - Layouts
- Yii - Assets
- Yii - Asset Conversion
- Yii - Extensions
- Yii - Creating Extensions
- Yii - HTTP Requests
- Yii - Responses
- Yii - URL Formats
- Yii - URL Routing
- Yii - Rules of URL
- Yii - HTML Forms
- Yii - Validation
- Yii - Ad Hoc Validation
- Yii - AJAX Validation
- Yii - Sessions
- Yii - Using Flash Data
- Yii - Cookies
- Yii - Using Cookies
- Yii - Files Upload
- Yii - Formatting
- Yii - Pagination
- Yii - Sorting
- Yii - Properties
- Yii - Data Providers
- Yii - Data Widgets
- Yii - ListView Widget
- Yii - GridView Widget
- Yii - Events
- Yii - Creating Event
- Yii - Behaviors
- Yii - Creating a Behavior
- Yii - Configurations
- Yii - Dependency Injection
- Yii - Database Access
- Yii - Data Access Objects
- Yii - Query Builder
- Yii - Active Record
- Yii - Database Migration
- Yii - Theming
- Yii - RESTful APIs
- Yii - RESTful APIs in Action
- Yii - Fields
- Yii - Testing
- Yii - Caching
- Yii - Fragment Caching
- Yii - Aliases
- Yii - Logging
- Yii - Error Handling
- Yii - Authentication
- Yii - Authorization
- Yii - Localization
- Yii - Gii
- Gii – Creating a Model
- Gii – Generating Controller
- Gii – Generating Module
- Yii Useful Resources
- Yii - Quick Guide
- Yii - Useful Resources
- Yii - Discussion
Yii - Using Flash Data
Yii provides a concept of flash data. Flash data is a session data which −
- Is set in one request.
- Will only be available on the next request.
- Will be automatically deleted afterwards.
Step 1 − Add an actionShowFlash method to the SiteController.
public function actionShowFlash() { $session = Yii::$app->session; // set a flash message named as "greeting" $session->setFlash('greeting', 'Hello user!'); return $this->render('showflash'); }
Step 2 − Inside the views/site folder, create a View file called showflash.php.
<?php use yii\bootstrap\Alert; echo Alert::widget([ 'options' => ['class' => 'alert-info'], 'body' => Yii::$app->session->getFlash('greeting'), ]); ?>
Step 3 − When you type http://localhost:8080/index.php?r=site/show-flash in the address bar of the web browser, you will see the following.
Yii also provides the following session classes −
yii\web\CacheSession − Stores session information in a cache.
yii\web\DbSession − Stores session information in a database.
yii\mongodb\Session − Stores session information in a MongoDB.
yii\redis\Session − Stores session information using redis database.
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