Quick Answer: What is primary key in laravel migration?

What is primary key in laravel?

Laravel Eloquent Change primary key and timestamps

By default, Eloquent models expect for the primary key to be named ‘id’ . If that is not your case, you can change the name of your primary key by specifying the $primaryKey property. … Additionally, Eloquent expects the primary key to be an auto-incrementing integer.

What is foreign key in laravel migration?

Firstly you have to make your user_id field an index: $table->index(‘user_id’); After that you can create a foreign key with an action on cascade: $table->foreign(‘user_id’)->references(‘id’)->on(‘users’)->onDelete(‘cascade’);

What are migrations in laravel?

Introduction. Migrations are like version control for your database, allowing your team to easily modify and share the application’s database schema. Migrations are typically paired with Laravel’s schema builder to easily build your application’s database schema.

What is indexing in laravel migration?

How to Add Index in Laravel Migration?

  1. Example 1: Simple Index.
  2. Create Migration Command:
  3. database/migrations/2021_04_01_040458_create_items_table.php.
  4. Output:
  5. Example 2: Unique.
  6. Create Migration Command:
  7. database/migrations/2021_04_01_040458_create_items2_table.php.
  8. Output:

Can foreign key be null?

Yes, a foreign key can be null. When a foreign key’s value is not known at the time of record generation then it’s kept null, given that that column is created nullable (default value is null).

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Is Laravel frontend or backend?

Is Laravel frontend or backend? The short answer is “backend”. The long one: Laravel is a server-side PHP framework; with it you can build full-stack apps, meaning apps with features typically requiring a backend, such as user accounts, exports, order management, etc.

What is model in laravel?

In Laravel, Model is a class that represents the logical structure and relationship of underlying data table. In Laravel, each of the database table has a corresponding “Model” that allow us to interact with that table. Models gives you the way to retrieve, insert, and update information into your data table.

How do I add a column in laravel migration?

laravel 5.6 and above

php artisan migrate is still the same though. You can add new columns within the initial Schema::create method like this: Schema::create(‘users’, function($table) { $table->integer(“paied”); $table->string(“title”); $table->text(“description”); $table->timestamps(); });

Why migration is used in Laravel?

In Laravel, Migration provides a way for easily sharing the schema of the database. It also makes the modification of the schema much easier. It is like creating a schema once and then sharing it many times. … All the migration file that we create using the artisan command are located at database/migrations directory.

What is ORM Laravel use?

The Eloquent ORM included with Laravel provides a beautiful, simple ActiveRecord implementation for working with your database. Each database table has a corresponding “Model” which is used to interact with that table. Before getting started, be sure to configure a database connection in config/database. php .

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