README

Yii2 Moderation Extension

A simple Content Moderation System for Yii2 that allows you to Approve or Reject resources like posts, comments, etc.

Installation

The preferred way to install this extension is through composer.

Either run

php composer.phar require --prefer-dist yii2mod/yii2-moderation "*"

or add

"yii2mod/yii2-moderation": "*"

to the require section of your composer.json.

Configuration

To enable moderation for a model, use the yii2mod\moderation\ModerationBehavior behavior and add the status and moderated_by columns to your model's table.

Create a migration to add the new columns. Example Migration:

<?php

use yii\db\Migration;

/**
 * Handles adding moderation columns to table `post`.
 */
class m161117_092603_add_moderation_columns_to_post_table extends Migration
{
    /**
     * @inheritdoc
     */
    public function up()
    {
        $this->addColumn('post', 'status', $this->smallInteger());
        $this->addColumn('post', 'moderated_by', $this->integer());
    }

    /**
     * @inheritdoc
     */
    public function down()
    {
        $this->dropColumn('post', 'status');
        $this->dropColumn('post', 'moderated_by');
    }
}

To use ModerationBehavior, insert the following code to your ActiveRecord class:

use yii2mod\moderation\ModerationBehavior;

class Post extends ActiveRecord 
{
    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            ModerationBehavior::class,
        ];
    }
}

By default, ModerationBehavior will automatically set the moderated_by attribute.

If your attribute names are different, you may configure the [[statusAttribute]] and [[moderatedByAttribute]] properties like the following:

use yii2mod\moderation\ModerationBehavior;

class Post extends ActiveRecord 
{
    /**
     * @inheritdoc
     */
    public function behaviors()
    {
      return [
          [
              'class' => ModerationBehavior::class,
              'statusAttribute' => 'status_id',
              'moderatedByAttribute' => 'moderator_id', // or set to `false` to disable this attribute.
          ],
      ];
    }
}

Usage

In next examples I will use Post model to demonstrate how the behavior and query class works. You can moderate any ActiveRecord Model.

Moderate Models

ModerationBehavior provides the following methods for model moderation:

$post->markApproved(); // Change post status to Approved

$post->markRejected(); // Change post status to Rejected

$post->markPostponed(); // Change post status to Postponed

$post->markPending(); // Change post status to Pending

Model Status

ModerationBehavior also provides the following methods for checking the moderation status:

$post->isPending(); // Check if a post is pending

$post->isApproved(); // Check if a post is approved

$post->isRejected(); // Check if a post is rejected

$post->isPostponed(); // Check if a post is postponed

Events

By default [[yii2mod\moderation\ModerationBehavior]] triggers [[yii2mod\moderation\ModerationBehavior::EVENT_BEFORE_MODERATION]]

You may attach the event handlers for this event to your ActiveRecord object:

$post = Post::findOne($id);
$post->on(ModerationBehavior::EVENT_BEFORE_MODERATION, function ($event) {
    $event->isValid = false; // prevent moderation for the model
});

You may also handle these events inside your ActiveRecord class by declaring the corresponding method:

use yii2mod\moderation\ModerationBehavior;

class Post extends ActiveRecord 
{
    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            ModerationBehavior::class,
        ];
    }
    
    public function beforeModeration()
    {
        $this->moderated_at = time(); // log the moderation date

        return true;
    }
}

Query Models

ModerationQuery adds the ability of getting only approved, rejected, postponed or pending models. Usage example:

use yii2mod\moderation\ModerationQuery;

class Post extends ActiveRecord 
{
    public static function find()
    {
        return new ModerationQuery(get_called_class());
    }
}

Now you can use the following methods:

Post::find()->approved()->all(); // It will return all Approved Posts

Post::find()->pending()->all(); // It will return all Pending Posts

Post::find()->rejected()->all(); // It will return all Rejected Posts

Post::find()->postponed()->all(); // It will return all Postponed Posts

Post::find()->approvedWithPending()->all() // It will return all Approved and Pending Posts

Support us

Does your business depend on our contributions? Reach out and support us on Patreon. All pledges will be dedicated to allocating workforce on maintenance and new awesome stuff.