simple version

readme.md

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+Yii2 page module
+===================
+
+Installation
+------------
+
+The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
+
+Either run
+
+```
+php composer.phar require --prefer-dist omny/yii2-page-module "*"
+```
+
+or add
+
+```
+"omny/yii2-page-module": "*"
+```
+
+for actual code and fixes:
+
+```
+"omny/yii2-page-module": "dev-master"
+```
+
+to the require section of your `composer.json` file.
+
+Migrate
+---
+
+The last thing you need to do is updating your database schema by applying the migrations. Make sure that you have properly configured db application component and run the following command:
+
+```
+$ php yii migrate/up --migrationPath=@vendor/omny/yii2-page-module/src/migrations
+```
+
+Using
+---
+
+Create controller and extend it from backend or frontend one:
+
+```
+use omny\yii2\page\module\controllers\BackendController; 
+
+class PageController extends BackendController
+{
+
+}
+```
+
+or using by actions:
+
+```
+<?php
+
+namespace app\controllers\backend;
+
+use omny\yii2\page\module\actions\CreateAction;
+use omny\yii2\page\module\actions\ManageAction;
+use omny\yii2\page\module\actions\UpdateAction;
+
+/**
+ * Class PageController
+ * @package app\controllers\backend
+ */
+class PageController extends AbstractController
+{
+    /**
+     * @return array
+     */
+    public function actions()
+    {
+        return [
+            'create' => [
+                'class' => CreateAction::class
+            ],
+            'manage' => [
+                'class' => ManageAction::class,
+            ],
+            'update' => [
+                'class' => UpdateAction::class,
+            ]
+        ];
+    }
+}
+```

src/actions/CreateAction.php

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+<?php
+
+namespace omny\yii2\page\module\actions;
+
+use omny\yii2\page\module\models\Page;
+use yii\base\Action;
+use yii\web\Response;
+
+/**
+ * Class CreateAction
+ * @package omny\yii2\page\module\actions
+ */
+class CreateAction extends Action
+{
+    /** @var string */
+    public $viewFile = '@vendor/omny/yii2-page-module/src/views/create.php';
+    /** @var string */
+    public $redirectUrl = 'manage';
+
+    /**
+     * @return string|Response
+     */
+    public function run()
+    {
+        $model = new Page([
+            'user_id' => \Yii::$app->getUser()->getId()
+        ]);
+
+        if ($model->load(\Yii::$app->getRequest()->post()) && $model->save()) {
+            return $this->controller->redirect([$this->redirectUrl]);
+        }
+
+        return $this->controller->render($this->viewFile, ['model' => $model]);
+    }
+}

src/actions/ManageAction.php

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+<?php
+
+namespace omny\yii2\page\module\actions;
+
+use omny\yii2\page\module\models\Page;
+use yii\base\Action;
+use yii\data\ActiveDataProvider;
+
+/**
+ * Class ManageAction
+ * @package omny\yii2\page\module\actions
+ */
+class ManageAction extends Action
+{
+    /** @var string */
+    public $viewFile = '@vendor/omny/yii2-page-module/src/views/manage.php';
+    /** @var string */
+    public $viewUrl = 'view';
+
+    /**
+     * @return string
+     */
+    public function run(): string
+    {
+        $provider = new ActiveDataProvider([
+            'query' => Page::find(),
+        ]);
+        $viewUrl = $this->viewUrl;
+
+        return $this->controller->render($this->viewFile, compact('provider', 'viewUrl'));
+    }
+}

src/actions/UpdateAction.php

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+<?php
+
+namespace omny\yii2\page\module\actions;
+
+use omny\yii2\page\module\repositories\PageRepository;
+use yii\base\Action;
+use yii\base\InvalidConfigException;
+use yii\di\NotInstantiableException;
+use yii\web\NotFoundHttpException;
+use yii\web\Response;
+
+/**
+ * Class UpdateAction
+ * @package omny\yii2\page\module\actions
+ */
+class UpdateAction extends Action
+{
+    /** @var string */
+    public $viewFile = '@vendor/omny/yii2-page-module/src/views/update.php';
+    /** @var string */
+    public $redirectUrl = 'manage';
+
+    /**
+     * @param int $id
+     * @return string|Response
+     * @throws InvalidConfigException
+     * @throws NotFoundHttpException
+     * @throws NotInstantiableException
+     */
+    public function run(int $id)
+    {
+        /** @var PageRepository $repository */
+        $repository = \Yii::$container->get(PageRepository::class);
+        $model = $repository->getById($id);
+
+        if ($model->load(\Yii::$app->getRequest()->post()) && $model->save()) {
+            return $this->controller->redirect([$this->redirectUrl]);
+        }
+
+        return $this->controller->render($this->viewFile, ['model' => $model]);
+    }
+}

src/actions/ViewAction.php

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+<?php
+
+namespace omny\yii2\page\module\actions;
+
+use omny\yii2\page\module\repositories\PageRepository;
+use yii\base\Action;
+use yii\base\InvalidConfigException;
+use yii\di\NotInstantiableException;
+use yii\web\NotFoundHttpException;
+
+/**
+ * Class ViewAction
+ * @package omny\yii2\page\module\actions
+ */
+class ViewAction extends Action
+{
+    /** @var string */
+    public $viewFile = '@vendor/omny/yii2-page-module/src/views/view.php';
+
+    /**
+     * @param string $slug
+     * @return string
+     * @throws NotFoundHttpException
+     * @throws InvalidConfigException
+     * @throws NotInstantiableException
+     */
+    public function run(string $slug): string
+    {
+        /** @var PageRepository $repository */
+        $repository = \Yii::$container->get(PageRepository::class);
+        $model = $repository->getBySlug($slug);
+
+        return $this->controller->render($this->viewFile, ['model' => $model]);
+    }
+}

src/controllers/BackendController.php

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+<?php
+
+namespace omny\yii2\page\module\controllers;
+
+use omny\yii2\page\module\actions\CreateAction;
+use omny\yii2\page\module\actions\ManageAction;
+use omny\yii2\page\module\actions\UpdateAction;
+use yii\web\Controller;
+
+/**
+ * Class DefaultController
+ * @package omny\yii2\page\module\controllers\backend
+ */
+class BackendController extends Controller
+{
+    /**
+     * @return array
+     */
+    public function actions(): array
+    {
+        return [
+            'create' => [
+                'class' => CreateAction::class,
+            ],
+            'manage' => [
+                'class' => ManageAction::class,
+            ],
+            'update' => [
+                'class' => UpdateAction::class,
+            ]
+        ];
+    }
+}

src/controllers/FrontendController.php

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+<?php
+
+namespace omny\yii2\page\module\controllers;
+
+use omny\yii2\page\module\actions\ViewAction;
+use yii\web\Controller;
+
+/**
+ * Class DefaultController
+ * @package omny\yii2\page\module\controllers\frontend
+ */
+class FrontendController extends Controller
+{
+    /**
+     * @return array
+     */
+    public function actions()
+    {
+        return [
+            'view' => [
+                'class' => ViewAction::class
+            ]
+        ];
+    }
+}

src/migrations/m180000_000000_page.php

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+<?php
+
+use omny\yii2\page\module\models\Page;
+use yii\db\Migration;
+
+/**
+ * Class m180000_000000_page
+ */
+class m180000_000000_page extends Migration
+{
+    const INDEX_TEMPLATE = 'idx__%s__%s';
+
+    const CURRENT_TIMESTAMP_EXPRESSION = 'current_timestamp()';
+    const DEFAULT_ON_UPDATE_EXPRESSION = "'0000-00-00 00:00:00' ON UPDATE CURRENT_TIMESTAMP";
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeUp()
+    {
+        $this->createTable(
+            Page::tableName(),
+            [
+                'id' => $this->bigPrimaryKey()->unsigned(),
+                'title' => $this->string()->notNull(),
+                'slug' => $this->string()->unique()->notNull(),
+                'body' => $this->text(),
+                'user_id' => $this->bigInteger()->unsigned()->null()->defaultValue(null),
+                'created' => $this->timestamp()->defaultExpression(self::CURRENT_TIMESTAMP_EXPRESSION),
+                'updated' => $this->timestamp()->defaultExpression(self::DEFAULT_ON_UPDATE_EXPRESSION),
+            ]
+        );
+        $this->createIndex(
+            sprintf(self::INDEX_TEMPLATE, Page::tableName(), 'slug'),
+            Page::tableName(),
+            'slug',
+            true
+        );
+        $this->createIndex(
+            sprintf(self::INDEX_TEMPLATE, Page::tableName(), 'user_id'),
+            Page::tableName(),
+            'user_id'
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeDown()
+    {
+        $this->dropTable(Page::tableName());
+    }
+}