Yii provides a set of widgets for displaying data. You can use the DetailView widget to display a single record. The ListView widget, as well as Grid View, can be used to display a table of records with features like filtering, sorting, and pagination.
Preparing the DB
Step 1 − Create a new database. Database can be prepared in the following two ways.
- In the terminal run mysql -u root –p
- Create a new database via CREATE DATABASE helloworld CHARACTER SET utf8 COLLATE utf8_general_ci;
Step 2 − Configure the database connection in the config/db.php file. The following configuration is for the system used currently.
<?php return [ 'class' => 'yii\db\Connection', 'dsn' => 'mysql:host=localhost;dbname=helloworld', 'username' => 'vladimir', 'password' => '12345', 'charset' => 'utf8', ]; ?>
Step 3 − Inside the root folder run./yii migrate/create test_table. This command will create a database migration for managing our DB. The migration file should appear in the migrations folder of the project root.
Step 4 − Modify the migration file (m160106_163154_test_table.php in this case) this way.
<?php use yii\db\Schema; use yii\db\Migration; class m160106_163154_test_table extends Migration { public function safeUp() { $this->createTable("user", [ "id" => Schema::TYPE_PK, "name" => Schema::TYPE_STRING, "email" => Schema::TYPE_STRING, ]); $this->batchInsert("user", ["name", "email"], [ ["User1", "user1@gmail.com"], ["User2", "user2@gmail.com"], ["User3", "user3@gmail.com"], ["User4", "user4@gmail.com"], ["User5", "user5@gmail.com"], ["User6", "user6@gmail.com"], ["User7", "user7@gmail.com"], ["User8", "user8@gmail.com"], ["User9", "user9@gmail.com"], ["User10", "user10@gmail.com"], ["User11", "user11@gmail.com"], ]); } public function safeDown() { $this->dropTable('user'); } } ?>
The above migration creates a user table with these fields: id, name, and email. It also adds a few demo users.
Step 5 − Inside the project root run./yii migrate to apply the migration to the database.
Step 6 − Now, we need to create a model for our user table. For the sake of simplicity, we are going to use the Gii code generation tool. Open up this url: http://localhost:8080/index.php?r=gii. Then, click the “Start” button under the “Model generator” header. Fill in the Table Name (“user”) and the Model Class(“MyUser”), click the “Preview” button and finally, click the “Generate” button.
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The MyUser model should appear in the models directory.
DetailView Widget
The DetailView widget shows the data of a single model. The $attributes property defines which model attributes should be displayed.
Step 1 − Add the actionDataWidget method to the SiteController.
public function actionDataWidget() { $model = MyUser::find()->one(); return $this->render('datawidget', [ 'model' => $model ]); }
In the above code, we find that the first MyUser model and pass it to the datawidget view.
Step 2 − Create a file called datawidget.php inside the views/site folder.
<?php use yii\widgets\DetailView; echo DetailView::widget([ 'model' => $model, 'attributes' => [ 'id', //formatted as html 'name:html', [ 'label' => 'e-mail', 'value' => $model->email, ], ], ]); ?>
Step 3 − If you go to http://localhost:8080/index.php?r=site/data-widget, you will see a typical usage of the DetailView widget.
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