Delete on cascade in Model Laravel with eloquent - sql-server

Question

I want to delete data through the api but it is showing an error because it is necessary to delete records in the properties table.
SQLSTATE[23000]: [Microsoft][ODBC Driver 17 for SQL Server][SQL Server] The DELETE statement conflicted with the REFERENCE constraint "FK_Interests_Properties_User". The conflict occurred in database "CADASTRO", table "dbo.Interests_Properties", column 'interests_user_id'. (SQL: delete from [Interests_User] where [user_id] = 1515626)
I created the model that performs actions on the Interests_Properts table, but when I try to delete the data that has the same interests_user_id, errors are occurring.
InterestsUser.php:
use App\Source\InterestsProperties;
class InterestsUser extends Model
{
protected $connection = 'sql_cadastro';
protected $table = 'Interests_User';
protected $primaryKey = 'id';
public $timestamps = false;
public function properties()
{
$this->belongsToMany(InterestsProperties::class, 'foreign_key');
}
public static function lgpdInterestsUser($id_user, $action)
{
if ($action == 'search') {
$data = InterestsUser::where('user_id', $id_user)->get();
if (count($data) > 0) {
return $data;
} else {
return false;
}
} elseif ($action == 'delete') {
$data = InterestsUser::with('properties')->where('user_id', $id_user)->get();
foreach ($data->properties as $p) $p->delete();
if ($data > 0) {
return 'Success Remove.';
} else {
return 'Not Found.';
}
} else {
return "Action Incorrect!";
}
}
}
InterestsProperties.php
class InterestsProperties extends Model
{
protected $table = 'Interests_Properties';
protected $primaryKey = 'id';
public $timestamps = false;
}
The error is occurring when trying to remove with cascade:
Call to undefined method Illuminate\Database\Eloquent\Builder::foreign()
Table Structure
Interests_User
id
interest_id
user_id
created_at
updated_at
Interests_Properties
id
interests_user_id
key
value
created_at
updated_at

Answer 1

At DB level, using onDelete: when migrating your InterestsProperties model you'll have a line like
$table->foreignId('foreign_key')
to that add ->onDelete('cascade')
after that update each time you delete a record from the main table it will do it in this one to.
At PHP level,
$data = InterestsUser::with('properties')->where('user_id', $id_user)->first();
foreach($data->properties as $p) $p->delete();
PD: Those will remove the property record too.