laravel eloquent or code example

Example 1: laravel create model

# The easiest way to create a model instance is using the 
# make:model Artisan command:

php artisan make:model Flight

# If you would like to generate a database migration when you 
# generate the model, you may use the --migration or -m option:

php artisan make:model Flight --migration
php artisan make:model Flight -m

Example 2: laravel eloquent get first

// return first row by id
$user = App\User::where('id',$id)->first();
// or return directly a field
$userId = App\User::where(...)->pluck('id');

Example 3: 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]
);

Example 4: laravel create on model

$user = User::create([
    'first_name' => 'Taylor',
    'last_name' => 'Otwell',
    'title' => 'Developer',
]);

$user->title = 'Painter';

$user->isDirty(); // true
$user->isDirty('title'); // true
$user->isDirty('first_name'); // false

$user->isClean(); // false
$user->isClean('title'); // false
$user->isClean('first_name'); // true

$user->save();

$user->isDirty(); // false
$user->isClean(); // true

Example 5: laravel model::query

// Eloquent's Model::query() returns the query builder

Model::where()->get();
// Is the same as 
Model::query()->where()->get();

Model::query();
// Can be useful to add query conditions based on certain requirements

// See https://stackoverflow.com/questions/51517203/what-is-the-meaning-of-eloquents-modelquery