Laravel Eloquent Tips and Tricks

$article = Article::find($article_id);
$article->read_count++;
$article->save();

$article = Article::find($article_id);
$article->increment('read_count');

Article::find($article_id)->increment('read_count');
Article::find($article_id)->increment('read_count', 10); // +10
Product::find($produce_id)->decrement('stock'); // -1

$user = User::find($id);
if (!$user) { abort (404); }

$user = User::findOrFail($id);
Example 2 – firstOrCreate():

$user = User::where('email', $email)->first();
if (!$user) {
  User::create([
    'email' => $email
  ]);
}

$user = User::firstOrCreate(['email' => $email]);

class User extends Model
{
    public static function boot()
    {
        parent::boot();
        static::updating(function($model)
        {
            // do some logging
            // override some property like $model->something = transform($something);
        });
    }
}

public static function boot()
{
  parent::boot();
  self::creating(function ($model) {
    $model->uuid = (string)Uuid::generate();
  });
}

public function users() {
    return $this->hasMany('App\User');    
}

public function approvedUsers() {
    return $this->hasMany('App\User')->where('approved', 1)->orderBy('email');
}

class User extends Model {
    protected $table = 'users';
    protected $fillable = ['email', 'password']; // which fields can be filled with User::create()
    protected $dates = ['created_at', 'deleted_at']; // which fields will be Carbon-ized
    protected $appends = ['field1', 'field2']; // additional values returned in JSON
}

protected $primaryKey = 'uuid'; // it doesn't have to be "id"
public $incrementing = false; // and it doesn't even have to be auto-incrementing!
protected $perPage = 25; // Yes, you can override pagination count PER MODEL (default 15)
const CREATED_AT = 'created_at';
const UPDATED_AT = 'updated_at'; // Yes, even those names can be overridden
public $timestamps = false; // or even not used at all

$user = User::find(1);

$users = User::find([1,2,3]);

$users = User::where('approved', 1)->get();

$users = User::whereApproved(1)->get(); 

User::whereDate('created_at', date('Y-m-d'));
User::whereDay('created_at', date('d'));
User::whereMonth('created_at', date('m'));
User::whereYear('created_at', date('Y'));

public function latestPost()
{
    return $this->hasOne(\App\Post::class)->latest();
}

$users = Topic::with('latestPost')->get()->sortByDesc('latestPost.created_at');

if (request('filter_by') == 'likes') {
    $query->where('likes', '>', request('likes_amount', 0));
}
if (request('filter_by') == 'date') {
    $query->orderBy('created_at', request('ordering_rule', 'desc'));
}

$query = Author::query();
$query->when(request('filter_by') == 'likes', function ($q) {
    return $q->where('likes', '>', request('likes_amount', 0));
});
$query->when(request('filter_by') == 'date', function ($q) {
    return $q->orderBy('created_at', request('ordering_rule', 'desc'));
});

$query = User::query();
$query->when(request('role', false), function ($q, $role) { 
    return $q->where('role_id', $role);
});
$authors = $query->get();

{{ $post->author->name }}

{{ $post->author->name ?? '' }}

public function author()
{
    return $this->belongsTo('App\Author')->withDefault();
}

public function author()
{
    return $this->belongsTo('App\Author')->withDefault([
        'name' => 'Guest Author'
    ]);
}

function getFullNameAttribute()
{
  return $this->attributes['first_name'] . ' ' . $this->attributes['last_name'];
}

$clients = Client::orderBy('full_name')->get(); // doesn't work

$clients = Client::get()->sortBy('full_name'); // works!

protected static function boot()
{
    parent::boot();
 
    // Order by name ASC
    static::addGlobalScope('order', function (Builder $builder) {
        $builder->orderBy('name', 'asc');
    });
}

// whereRaw
$orders = DB::table('orders')
    ->whereRaw('price > IF(state = "TX", ?, 100)', [200])
    ->get();
 
// havingRaw
Product::groupBy('category_id')->havingRaw('COUNT(*) > 1')->get();
 
// orderByRaw
User::where('created_at', '>', '2016-01-01')
  ->orderByRaw('(updated_at - created_at) desc')
  ->get();

$task = Tasks::find(1);
$newTask = $task->replicate();
$newTask->save();

$users = User::all();
foreach ($users as $user) {
    // ...

User::chunk(100, function ($users) {
    foreach ($users as $user) {
        // ...
    }
});

php artisan make:model Company
But did you know there are three useful flags to generate related files to the model?
 
php artisan make:model Company -mcr
-m will create a migration file
-c will create a controller
-r will indicate that controller should be resourceful

$product = Product::find($id);
$product->updated_at = '2019-01-01 10:00:00';
$product->save(['timestamps' => false]);

$result = $products->whereNull('category_id')->update(['category_id' => 2]);

... WHERE (gender = 'Male' and age >= 18) or (gender = 'Female' and age >= 65)

$q->where('gender', 'Male');
$q->orWhere('age', '>=', 18);
$q->where('gender', 'Female');
$q->orWhere('age', '>=', 65);

$q->where(function ($query) {
    $query->where('gender', 'Male')
        ->where('age', '>=', 18);
})->orWhere(function($query) {
    $query->where('gender', 'Female')
        ->where('age', '>=', 65); 
})

$q->where('a', 1);
$q->orWhere('b', 2);
$q->orWhere('c', 3);
You can do it like this:
 
$q->where('a', 1);
$q->orWhere(['b' => 2, 'c' => 3]);