Laravel, create MySQL trigger from Migration

               

Admin dashboard in Laravel ​8. X | HR MS

Step 1: Create Model and Migrate

By running the below command in your terminal. "2021_10_16_234538_create_sequence_tbls_table.php"

php artisan make:model sequence_tbl -m

Step 2: CreateSequenceTblsTable

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateSequenceTblsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('sequence_tbls', function (Blueprint $table) {
            $table->id();
        });
    }

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

2021_10_16_234708_create_bookings_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateBookingsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('bookings', function (Blueprint $table) {
            $table->id();
            $table->string('bkg_id');
            $table->string('name')->nullable();
            $table->string('room_type')->nullable();
            $table->string('total_numbers')->nullable();
            $table->string('date')->nullable();
            $table->string('time')->nullable();
            $table->string('arrival_date')->nullable();
            $table->string('depature_date')->nullable();
            $table->string('email')->nullable();
            $table->string('ph_number')->nullable();
            $table->string('status')->nullable();
            $table->timestamps();
        });
    }

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

2021_10_16_235340_create_create_generate_i_d_bookings_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateCreateGenerateIDBookingsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        DB::unprepared('
        CREATE TRIGGER id_store BEFORE INSERT ON bookings FOR EACH ROW
            BEGIN
                INSERT INTO sequence_tbls VALUES (NULL);
                SET NEW.bkg_id = CONCAT("BKG-", LPAD(LAST_INSERT_ID(), 8, "0"));
            END
        ');
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        DB::unprepared('DROP TRIGGER "id_store"');
    }
}

Step 3: Make Migration

After adding the migration file now run the migrate command.

php artisan migrate