Answers for "i need to check if there is any foreign key present in laravel controller before it deletes"

disable foreign key laravel

//...
class ClearOldOauthRelations extends Migration
{
    public function up()
    {
        Schema::disableForeignKeyConstraints();
        // drop foreign keys
        Schema::table('oauth_access_tokens', function (BluePrint $table) {
            $table->dropForeign('oauth_access_tokens_session_id_foreign');
        });
        //...
        Schema::enableForeignKeyConstraints();
    }
    //...
}

drop foreign key laravel eloquent

Schema::table('admins', function (Blueprint $table) {    $table->dropForeign('admins_post_id_foreign');    $table->dropColumn('post_id');});