Why this lesson matters

Understand eloquent crud and apply it in a small Laravel feature. Migrations define database evolution, Eloquent models represent records and relationships, and queries should preserve the integrity constraints the schema is designed to enforce.

How to reason about it

  • For Eloquent CRUD, the outcome to verify is: Keep query intent explicit so business filtering remains readable.
  • In Eloquent CRUD, keep this failure controlled: Relying only on application validation while omitting database keys, foreign keys or appropriate column types leaves integrity vulnerable to other writers.
  • Eloquent CRUD practice target: Create a parent and child table with a foreign key, model the relation in Eloquent, insert data and query it through the relationship.

Practical walkthrough

In the Eloquent CRUD walkthrough: Keep query intent explicit so business filtering remains readable.

OrderService.phpphp
$order = Order::query()->create([
    'user_id' => $user->id,
    'total' => $total,
]);

$openOrders = Order::query()->where('status', 'OPEN')->latest()->get();

Practice it yourself

Practice

Eloquent CRUD exercise

Create a parent and child table with a foreign key, model the relation in Eloquent, insert data and query it through the relationship.

  • Record the expected result before execution
  • Test one valid path and one lesson-specific failure path
  • Explain in two lines which boundary owns the decision

Summary