cascade in laravel migration
$table->dropForeign('answers_user_id_foreign');
$table->foreign('user_id')
->references('id')->on('users')
->onDelete('cascade');cascade in laravel migration
$table->dropForeign('answers_user_id_foreign');
$table->foreign('user_id')
->references('id')->on('users')
->onDelete('cascade');how work cascade laravel
Schema::create('posts', function (Blueprint $table) {
$table->increments('id');
$table->integer('author')->unsigned();
$table->timestamps();
$table->foreign('author')->references('id')->on('users')->onUpdate('cascade');
});cascade laravel
Schema::create('posts', function (Blueprint $table) {
$table->id();
$table->foreignId('author')->constrained('users')->onDelete('cascade')->onUpdate('cascade');
$table->timestamps();
});laravel delete relationship data
class User extends Eloquent
{
public function photos()
{
return $this->has_many('Photo');
}
// this is a recommended way to declare event handlers
public static function boot() {
parent::boot();
static::deleting(function($user) { // before delete() method call this
$user->photos()->delete();
// do the rest of the cleanup...
});
}
}Copyright © 2021 Codeinu
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