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Laravel tips

Some tips for the laravel framework

Let’s go through some tips and tricks which we can add to Laravel applications to optimize website performance.

  1. Invokable Controllers:

    If you want to create a controller with just one action in Laravel, you can use the __invoke() method and even create an “invokable” controller.
    Example:

    Class ControllerName extends controller {
    Public function _invoke($id){
    return view(‘user.profie’, [‘user’ => User::findOrFail($id)]);
    }}
    Routes: Route::get('user/{id}' ‘ControllerName’);

    Command to generate command:
    php artisan make:controller ControllerName --invokable

  2. Unsigned Integer:

    For foreign key migrations instead of integer() we should use unsignedInteger() type or integer()->unsigned() , otherwise you may get SQL errors.
    Example: Schema::create('employees', function (Blueprint $table) {
    $table-> unsignedInteger ('company_id'); //if primary id Increments
    $table->foreign('company_id')->references('id')->on('companies');
    });

  3. OrderBy with Eloquent: You can specify orderBy() directly on your Eloquent relationships.

    Example: return $this->hasMany(Product::class)->orderBy('name');

  4. Raw DB Queries: You can use RAW DB queries in various places, including havingRaw() function after groupBy().

    Example: Product::groupBy('category_id')->havingRaw('COUNT(*) > 1')->get();

  5. Eloquent where date methods: In Eloquent, check the date with functions whereDay() , whereMonth() , whereYear() , whereDate() and whereTime() .

    Example:
    $products = Product::whereDate('created_at', '2018-01-31')->get();
    $products = Product::whereMonth('created_at', '12')->get();
    $products = Product::whereDay('created_at', '31')->get();
    $products = Product::whereYear('created_at', date('Y'))->get();
    $products = Product::whereTime('created_at', '=', '14:13:58')->get();

  6. Route group within a group: In Routes, you can create a group within a group, assigning a certain middleware only to some URLs in the “parent” group.
    Example:
    Route::group(['prefix' => 'account', 'as' => 'account.'], function() {
    Route::get('login', 'AccountController@login');
    Route::get('register', 'AccountController@register');
    Route::group(['middleware' => 'auth'], function() {
    Route::get('edit', 'AccountController@edit');
    });
    });
  7. Increments and decrements: if we want to increment some DB column in some table in Laravel, just use increment() function. We can increment value with any number.

    Example:
    Post::find($post_id)->increment('view_count');
    User::find($user_id)->increment('points', 50);

  8. We can check if the View file exists before actually loading it.
    Example:
    if (view()->exists('custom.page')) {
    // Load the view
    }
  9. No timestamp columns in the table: If our DB table doesn’t contain timestamp fields created_at and updated_at, we can specify that the Eloquent model wouldn’t use them, with $timestamps = false property.
    Example:
    class Company extends Model
    {
    public $timestamps = false;
    }
  10. Database migrations column types:
    $table->geometry('positions');
    $table->ipAddress('visitor');
    $table->macAddress('device');
    $table->point('position');
    $table->uuid('id');

    See all column types: visit here

  11. Soft-deletes: multiple restores: When using soft-deletes, we can restore multiple rows in one sentence.

    Post::withTrashed()->where('author_id', 1)->restore();

  12. Don’t create Controllers when we want the route to just show a certain view:
    Just use Route::view() function
    Route::view('about', 'texts.about');
  13. Image validation: While validating uploaded images, we can specify the dimensions that are required.
    Example:
    'photo' => 'dimensions:max_width=4096,max_height=4096'
  14. Blade @auth: Instead of if-statement to check logged in user, use @auth directive.
    Example:
    @auth
    // The user is authenticated.
    @endauth
  15. To Fail or Not to Fail function: In addition to findOrFail(), there’s also the Eloquent method firstOrFail() which will return a 404 page if no records for the query are found.
    Example:
    $user=User::where('email','codechief@gmail.com')->firstOrFail();
  16. More convenient DD: Instead of doing dd($result); you can put ->dd() as a method directly at the end of your Eloquent sentence, or any Collection.
    Example:
    // Instead of
    $users = User::where('name', 'Taylor')->get();
    dd($users);
    // Do this
    $users = User::where('name', 'Taylor')->get()->dd();
  17. How to avoid error in {{ $post->user->name }} if user is deleted? :
    You can assign a default model in belongsTo relationship, to avoid fatal errors when calling it like {{ $post->user->name }} if $post->user doesn’t exist.

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

  18. Redirect to Specific Controller Method: We can redirect() not only to URL or specific route, but to a specific Controller’s specific method, and even pass the parameters. Use this:
    Example: return redirect()->action('SomeController@method',['param' => $value]);
  19. Update parent updated_at easily: If we are updating a record and want to update the updated_at column of the parent relationship (like, we add new post comment and want posts.updated_at to renew), just use $touches = [‘post’]; property on child model.
    Example:
    class Comment extends Model
    {
    /**
    * All of the relationships to be touched.
    *
    * @var array
    */
    protected $touches = ['post'];
    }
  20. Use withCount() to Calculate Child Relationships Records: If you have hasMany() relationship, and you want to calculate “children” entries, don’t write a special query. For example, if you have posts and comments on your User model, write this withCount() :
    public function index()
    {
    $users = User::withCount(['posts', 'comments'])->get();
    return view('users', compact('users'));
    }

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