Related key-value storage for Yii2.

Description

Storage bases on MySQL table. It can be use to edit settings from admin panel.

This extension has two classes:

• Config - storage for default settings
• RelatedConfig - storage for individual settings

Feel free to let me know what else you want added via:

• Issues

Installation

The preferred way to install this extension is through composer.

Either run

$ php composer.phar require ancor/yii2-related-kv-storage

or add

"ancor/yii2-related-kv-storage": "dev-master"

to the require section of your composer.json file.

Config class

Simple key-value storage with array-like access.

Features:

• this class is the basis for RelatedConfig
• array access to options (also countable and iterable)
• this class can be use as yii component in $app container
• this class is designed for inheritance and expansion
• autoload configuration from database, when during instance creating

Storage bases on MySQL table. It can be use to edit settings from admin panel.

Configuration

'components' => [
    'config' => [
        'class' => 'ancor\relatedKvStorage\Config',

        // default settings
        // 'tableName'  => '{{config}}',
        // 'keyField'   => 'key',
        // 'valueField' => 'value',
    ]
]

Usage

Simple usage

Yii::$app->config['main-page.show-banner'] = true;

if (Yii::$app->config['main-page.show-banner']) { ... }

Iterable

$config = Yii::$app->config;

foreach ($config as $key => $value) {
    echo $key . ' -> ' . $value . "\n";
}

Configurations was automatically loaded when instance created. But configurations will not be save automatically.

Yii::$app->config->attributes = [
    'default.option-one' => true,
    'default.option-two' => false,
];

// Can be get, but didn't store
echo Yii::$app->config['default.option-one']; // true

// For convenience, let's make some variable
$config = Yii::$app->config;

// Save to database
$config->save();

// let's change any value
$config['default.option-one'] = false;
echo $config['default.option-one']; // false

// And now, imagine that we need to reset changed values to default.
// Reload from database. Please note, ->save() was not fired.
$config->reload();
echo $config['default.option-one']; // true

// If we need to array type
echo gettype($config->attributes); // array

RelatedConfig class

Simple key-value storage like Config, but related to other entity

Features:

• This class inherits all features from [[\ancor\relatedKvStorage\Config]]
• Ideal for storing user preferences, and preferences need to has default values

The value is extracted in three steps

1. Try to get current value from this(RelatedConfig) model.
2. Try to get default value from common config component(Yii::$app->config).
3. If the value has been not received will be returned null.

Please, create instance with help Yii::createObject() for configure instance.

Configuration

It is best to use through model. Example for class User

use ancor\relatedKvStorage\RelatedConfig

class User extends ... {

   ...

  /**
   * Get user configuration
   * @return RelatedConfig
   */
  public function getConfig() {
      $config = Yii::createObject([
          'class'      => RelatedConfig::className(),
          'relationId' => $this->id,

          // Default settings
          // 'tableName'           => '{{user_config}}',
          // 'relationIdField'     => 'user_id',
          // 'configComponentName' => 'config',
          // 'useCommonConfig'     => true,
      ]);
  }
}

Usage

// set default global settings (use Config class)
Yii::$app->config->attributes = [
   'user.dialogs.message-limit' => 100,
   'user.friends.limit => 20,
];

$user = new User();

$user->config = [

     // this option has not default value in global settings
    'user.dialogs.allow-modify' => true,

     // override default value from global settings
    'user.friends.limit' => 50,
];

// Must have! ( getConfig() reload don't cache `config` object and reload every time. So we didn't do it )
$user->config->save();

// use current value
echo $user->config['user.dialogs.allow-modify']; // true
// override default, use current value
echo $user->config['user.friends.limit']; // 50
// have not current, use default value
echo $user->config['user.dialogs.message-limit']; // 100