In our recent article I showed you about creating migration in laravel and sometimes after creating migration we want to rollback migration laravel so in this article i will show you to rollback migration in laravel. Laravel artisan have multiple options to rollback the migration like we can rollback all migrations, we can rollback last n number of migration using step option and in the same way we can rollback all specific rollback using reset option and refresh options.
In relational databases rollback is a technique to revert back the database operation in previous state. In the same way laravel maintains it migrations in file and database, and we can rollback the operation to its previous state using artisan command.
Simple syntax to Rollback Migration Laravel
Below command will rollback the last executed migrations
php artisan migrate:rollback
Rollback last migrations using step option
We can also rollback last migration using the step option in artisan command, step option accept numeric parameter to rollback last migrations. For example if --step =2
then it means it will rollback last two migrations.
here is the command
php artisan migration:rollback --step=3
Rollback last batch migrations
We can also rollback last batch of migration using the migration rollback command without any options as below
Here is the command
php artisan migration:rollback
Rollback all migrations and reset database
We can also rollback all migration and also can reset the database migration to start point using artisan migration:reset
command
Here is the command
php artisan migration:reset
Rollback all and Re run all migrations
refresh
option is used to rollback all migration and it runs again migration command to re create the database
Here is the command
php artisan migration:refresh
Let’s understand with an example
Step 1 : Generate migration file
To generate the migration file we will use the laravel artisan command so open the terminal in project and run below command
php artisan make:migration add_status_movies_table
Above command will create a migration file in folder database/migrations
Output: Created Migration: 2022_02_15_174050_add_status_movies_table
Step 2 : Open generated migration file and update
In the last step we created a migration file using the artisan command and now we wanted to add some more columns to schema of movies table.
so let’s open the file and start editing
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
class AddStatusMoviesTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
//
}
}
In the file there is a class named as AddStatusMoviesTable
and it extends Migration
class. AddStatusMoviesTable
contains two methods one is up and other one is down.
Up
is used to update the database scheme and down
method is used to rollback the changes of this migration. As you can see we are creating table movies
in up
method and dropping the table in down
method.
let’s add some more fields to our table before updating the database.
public function up()
{
Schema::table('movies', function (Blueprint $table) {
$table->integer("status");
});
}
public function down()
{
Schema::table('movies', function (Blueprint $table) {
$table->dropColumn("status");
});
}
Here we used Schema::table
to update the table.
Most important thing while rollback is to add the logic of down for rollback here
Step 3 : Run Migration
In this step we will execute our migration in database using below command
php artisan migrate
This will create table in database and the output
Output: Migrating: 2022_02_15_174050_add_status_movies_table Migrated: 2022_02_15_174050_add_status_movies_table (20.08ms)
Step 3 : Run Migration
Now if we want rollback the migration we need to rollback it using artisan command
php artisan migrate:rollback
or
php artisan migrate:rollback --step=1
Also Read : How to rollback a specific migration in laravel ?