WinterCMS Multi Databases

WinterCMS Plugin to create SaaS applications in different databases, making it easier to manage multiple clients. To develop this plugin I reused several classes that WinterCMS itself has, trying to create the simplest code possible.

Important This plugin is still in the testing and development stages, use at your own risk.

Usage

Installation

You can install this plugin either via composer.

With Composer

Execute below at the root of your project.

composer require sommer/wn-multidb-plugin

Settings MultiDB - Backend

To use MultiDB you will need to follow the steps below.

Important It is necessary to have a user in the database who can Read, Edit and Update data, as well as create new databases.

Configuration .env

This is optional, but if you want to configure data from another connection in the tenants, you can put Multidb in the .env. If you don't put anything, it will automatically assume the access data from your main database server that is used in DB_*.

MULTIDB_CONNECTION=multidb
MULTIDB_HOST=127.0.0.1
MULTIDB_PORT=3306
MULTIDB_DATABASE=my_base
MULTIDB_USERNAME=root
MULTIDB_PASSWORD=

MultiDB Plugin

First Navigate to Settings -> MultiDB -> Settings Plugin, in this place you can configure the prefixes that the databases may have, configure what will be the names of each databases, and also, you can select which plugins will be replicated for the new created instances.

Save changes to update data

Using in PHP Code

After making the configurations mentioned above, it is necessary to edit the models of the plugins.

Trait UsesTenantConnection

This trait is responsible for managing the data that will be saved in the databases. It will be necessary to add the following trait to all models that have the replicated database, example below:

class Product extends Model
{
	use \Sommer\Multidb\Traits\UsesTenantConnection;

	...
}

Trait UsesMainConnection

This Trait allows you to relate a table from the main database to the child database, for example, you have a Customers plugin, this plugin is using the UsesTenantConnection trait, however ou have a Core plugin that has a Country Model, this plugin you are not replicating, but you need to relate the country_id attribute of the customers table to the country table, in this situation there would be an error because MultiDB change connections momentarily, so as not to have a problem, you need to add in your model Country the trait below.

class Product extends Model
{
    use \Sommer\Multidb\Traits\UsesMainConnection;

    ...
}

Behaviors

TenantSelectionBehavior

The TenantSelectionBehavior class added to the controller will allow the user to choose a Tenant to view once they try to access this controller (if they haven't selected one previously). At this point, this behavior adds a button next to the user's image to the navigation menu, which allows them to change the selected Tenant.

class Summaries extends Controller
{
    /**
     * @var array
     */
    public $implement = [
        'Backend\Behaviors\ListController',
        'Backend\Behaviors\FormController',
        'Sommer\MultiDB\Behaviors\TenantSelectionBehavior', // <-- add this line
    ];
}

Models Helpers

Files

If in case you want to save the files in the new database, you will need to use the model Sommer\Multidb\Models\File, example use:

class Product extends Model
{
	use \Sommer\Multidb\Traits\UsesTenantConnection;

	...

	public $attachMany = [
        'images' => [
            'Sommer\Multidb\Models\File',
            'softDelete' => true,
        ],
    ];

    ...
}

Dheia / wn-multidb-plugin