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https://github.com/ntimyeboah/laravel-database-trigger

Generate migration file for database trigger
https://github.com/ntimyeboah/laravel-database-trigger

database laravel mysql php trigger

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Generate migration file for database trigger

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Add database trigger to laravel migrations
==========================================

[![Software License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE.md)
[![Build Status](https://img.shields.io/travis/NtimYeboah/laravel-database-trigger.svg?style=flat-square)](https://travis-ci.org/NtimYeboah/laravel-database-trigger)

Laravel Database Trigger provides a way to add database trigger to laravel migrations just like you would with database table.
A trigger is a named database object that is associated with a table, and that activates when a particular event occurs for the table. Read more about triggers [here](https://dev.mysql.com/doc/refman/8.0/en/triggers.html).

## Installation

Laravel Database Trigger requires at least [PHP](https://php.net) 7.3. This particular version supports Laravel v8.*. Check the table below for versions support.

| Package version | Laravel version | PHP version |
|----------|:-------------:|------:|
| 1 | 5.5, 5.6, 5.7 | >= 7.1 |
| 2.* | 5.8 | >= 7.1.3 |
| 3.* | 6.* | >= 7.2.5 or >= 8.0 |
| 4.* | 7.* | >= 7.2.5 or >= 8.0 |
| 5.* | 8.* | >= 7.3 or >= 8.0 |

The package currently supports MySQL only.

To get the latest version, simply require the package using [Composer](https://getcomposer.org):

```bash
$ composer require ntimyeboah/laravel-database-trigger
```

Once installed, if you are not using automatic package discovery, then you need to register the `NtimYeboah\LaravelDatabaseTrigger\TriggerServiceProvider` service provider in your `config/app.php`.

## Usage
Create a trigger migration file using the `make:trigger` artisan command.
The command requires the name of the trigger, name of the event object table, action timing and the event that activates the trigger.

```bash
$ php artisan make:trigger after_users_update
```

### Event object table
The event object table is the name of the table the trigger is associated with.

### Action timing
The activation time for the trigger. Possible values are `after` and `before`.

`after` - Process action after the change is made on the event object table.

`before` - Process action prior to the change is made on the event object table.

### Event
The event to activate trigger. A trigger event can be `insert`, `update` and `delete`.

`insert` - Activate trigger when an insert operation is performed on the event object table.

`update` - Activate trigger when an update operation is performed on the event object table.

`delete` - Activate trigger when a delete operation is performed on the event object table.

The following trigger migration file will be generated for a trigger that uses `after_users_update` as a name, `users` as event object table name, `after` as action timing and `update` as event.

```php

use Illuminate\Database\Migrations\Migration;
use NtimYeboah\LaravelDatabaseTrigger\TriggerFacade as Schema;

class CreateAfterUsersUpdateTrigger extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('after_users_update')
->on('users')
->statement(function() {
return '//...';
})
->after()
->update();
}

/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('users.after_users_update');
}
}

```

Return the trigger statement from the closure of the `statement` method.

The following is an example trigger migration to insert into the `users_audit` table after updating a user row.

```php

...

/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('after_users_update')
->on('users')
->statement(function() {
return 'insert into `users_audit` (`name`, `email`) values (old.name, old.email);';
})
->after()
->update();
}

...

```

## Testing

Run the tests with:

```php
$ composer test
```

## Changelog

Please see [CHANGELOG](https://github.com/NtimYeboah/laravel-database-trigger/blob/master/CHANGELOG.md) for more information on what has changed recently.

## Contributing

Please see [CONTRIBUTING](https://github.com/NtimYeboah/laravel-database-trigger/blob/master/CONTRIBUTING.md) for details.

## Security

If you discover a security vulnerability within this package, please send an e-mail to Ntim Yeboah at [email protected]. All security vulnerabilities will be promptly addressed.

## License

Laravel Database Trigger is licensed under [The MIT License (MIT)](LICENSE).