Answers for "find all in laravel"

laravel create or update

// If there's a flight from Oakland to San Diego, set the price to $99.
// If no matching model exists, create one.
$flight = App\Models\Flight::updateOrCreate(
    ['departure' => 'Oakland', 'destination' => 'San Diego'],
    ['price' => 99, 'discounted' => 1]
);

larave Soft Deletes

Schema::table('flights', function (Blueprint $table) {
    $table->softDeletes();
});

laravel update

$flight = App\Models\Flight::find(1);

$flight->name = 'New Flight Name';

$flight->save();

all() in laravel

all() is a static method on the Eloquent\Model.
All it does is create a new query object and call get() on it.
With all(), you cannot modify the query performed at all 
(except you can choose the columns to select by passing them as parameters).
get() is a method on the Eloquent\Builder object.