15 Random Laravel Snippets & Methods, Part 2

This is a follow up to the original 15 Random Laravel Snippets & Methods post.

Here are 15 more Laravel snippets/methods I use or have saved for later:

#1. Prevent N+1 with an Exception

1// Add to AppServiceProvider
2 
3Model::preventLazyLoading(! app()->isProduction());

#2. Don't allow unvalidated array keys

1// Add to AppServiceProvider
2 
3Validator::excludeUnvalidatedArrayKeys();

#3. Update a model without raising events

1// `updateQuietly` works like `update()` but without raising events
2 
3$user->updateQuietly(['email' => '[email protected]']);

#4. Cursor Pagination

The main difference between offset and cursor pagination is that offset pagination uses an offset clause while cursor pagination uses a where clause with a comparison operator.

1// Cursor pagination outperforms offset pagination by up to 400X
2 
3$users = User::orderBy('id')->cursorPaginate(10);

#5. One of Many Relationships

1/**
2 * Get the user's most recent order.
3 */
4public function latestOrder()
5{
6    return $this->hasOne(Order::class)->latestOfMany();
7}

#6. firstWhere

1Category::firstWhere('slug', $slug);
2 
3// instead of
4 
5Category::where('slug', $slug)->first();

#7. Str::replace

 1use Illuminate\Support\Str;
 2 
 3Str::replace('dead', 'alive', 'PHP is dead');
 4 
 5/* PHP is alive */
 6 
 7Str::of('PHP is dead')->replace('dead', 'alive');
 8 
 9/*
10Illuminate\Support\Stringable {#4091
11    value: "PHP is alive",
12}
13*/

#8. Checking if models are the same

1$user = User::find(1);
2$sameUser = User::find(1);
3 
4if ($user->is($sameUser)) {
5    // Same model
6}

#9. Don't update timestamps when saving

1$user->save(['timestamps' => false]);

#10. tap()

Force any method on an object to return the object itself.

1// Returns bool
2$user = $user->update(['name' => 'Anthony']);
3 
4// Updates user and returns original model
5$user = tap($user)->update(['name' => 'Anthony']);

#11. Ignore Trashed Models in Unique Validation Rule

Philo Hermans contributed a ignoreTrashed() validation rule which is syntactic sugar for the following rule:

 1// Before
 2[
 3    'email'=> [
 4        Rule::unique('users')->whereNull('deleted_at'),
 5    ],
 6];
 7 
 8// After
 9[
10    'email'=> [
11        Rule::unique('users')->ignoreTrashed(),
12    ],
13];

#12. @class

Dan Harrin contributed a @class Blade directive that allows developers to use conditional classes on any HTML element:

1<span @class([
2    'text-sm',
3    'font-bold' => $active,
4])>
5    Dashboard
6</span>

#13. Download Assertions

1// Assert the response returned a download
2$response->assertDownload();
3 
4// Assert the response is a download with a given file name.
5$response->assertDownload('invoice.pdf');

#14. Password Validation Rules

 1$request->validate([
 2    'password' => [
 3        'required',
 4        'confirmed',
 5        Password::min(8)
 6            ->mixedCase()
 7            ->letters()
 8            ->numbers()
 9            ->symbols()
10            ->uncompromised(),
11    ],
12]);

#15. Assert an input is not present

1$validated = $request->validate([
2    'name' => 'required|max:255',
3    'key' => 'prohibited',
4]);
5 
6// Response: 422
7// The key field is prohibited