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In this post We would like to share infinity knowladge My Good experience and Best solution For .
Laravel Examples
One to Many Relationship
Demo details:
In this demo we have 2 models (Thief and Car), and 2 tables (thieves and cars).
Business Rules:
The Thief can steal many Cars.
The Car can be stolen by one Thief.
The Car can be stolen by one Thief.
Relations Diagram:
Relationship Details:
The Cars table should store the Thief ID.
Eloquent Models:
class Thief
{
public function cars()
{
return $this->hasMany(Car::class);
}
}
class Car
{
public function thief()
{
return $this->belongsTo(Thief::class);
}
}
Database Migrations:
Schema::create('thieves', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
});
Schema::create('cars', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->integer('thief_id')->unsigned()->index()->nullable();
$table->foreign('thief_id')->references('id')->on('thieves');
});
Store Records:
// Create relation between Thief and Car.
$thief->cars()->saveMany([ $car1, $car2, ]);
// Or use the save() function for single model.
$thief->cars()->save($car);
// Create relation between Car and Thief.
$car->thief()->associate($thief)->save();
Retrieve Records:
// Get Thief Car
$thief->cars;
// Get Car Thief
$car->thief;
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