Web Develpers era: August 2023

laravel life cycle

The Laravel framework follows a specific lifecycle when handling incoming HTTP requests and generating responses. This lifecycle involves multiple steps and components working together to execute the requested action. Here's an overview of the typical Laravel request lifecycle:

Routing: The lifecycle begins with the routing process, where the framework matches the incoming request's URL to the appropriate route defined in the routes file (routes/web.php or routes/api.php). The route specifies the controller method or closure that should be executed.
Middleware: Middleware are intermediate layers that can process the request before it reaches the controller. Middleware can perform tasks such as authentication, authorization, logging, and more. You can apply middleware globally or to specific routes.
Controller Dispatch: Once the route is matched and middleware are applied, the associated controller method is dispatched. The controller contains the logic for processing the request and generating a response.
Request Handling: Within the controller method, you can access the request object, which holds information about the incoming HTTP request (such as input data, headers, and files).
Validation: Laravel provides a validation mechanism to ensure the incoming data meets specific rules. You can define validation rules within the controller or in separate request classes.
Action Execution: The controller method executes the necessary actions, which could involve retrieving data from a database, performing calculations, or interacting with services.
Response Generation: After processing the request, the controller returns a response. This response can be in various formats, including HTML views, JSON, or files.
Middleware (Outgoing): Once the controller has generated a response, it passes through any outgoing middleware. Outgoing middleware can modify the response or perform actions before it's sent to the client.
HTTP Kernel: The HTTP kernel is responsible for managing the request and response flow. It handles middleware, including both incoming and outgoing middleware.
Response: The final response is sent back to the client, completing the request lifecycle.

Throughout this lifecycle, Laravel provides hooks and events that allow developers to customize and extend various stages of the process. This flexibility makes it possible to implement additional functionality, such as logging, caching, or custom authentication mechanisms.

Remember that while this overview provides a general idea of the Laravel request lifecycle, the actual implementation and details may vary based on the specific version of Laravel you're using and any modifications you've made to the default configuration

traits

triat has single inheritance

it will show error because a function repeated in two traits

<!DOCTYPE html>

<html>

<body>

<?php

trait message1 {

  public function msg1() {

    echo "OOP is fun! "; 

  }

   public function msg2() {

    echo "OOsssP reduces code duplication!"; 

  }

}

trait message2 {

  public function msg2() {

    echo "OOP reduces code duplication!"; 

  }

}

class Welcome {

  use message1;

}

class Welcome2 {

  use message1, message2;

}

$obj = new Welcome();

$obj->msg1();

echo "<br>";

$obj2 = new Welcome2();

$obj2->msg1();

$obj2->msg2();

?>

</body>

</html>

no two traits same function if we import

error fateal error:

The error will occur in this part of the code:

$obj2 = new Welcome2(); $obj2->msg1(); $obj2->msg2(); // This line will cause an error

php
$obj2 = new Welcome2();
$obj2->msg1();
$obj2->msg2(); // This line will cause an error

The error message you might encounter is something like:

Fatal error: Trait method msg2 has not been applied, because there are collisions with the method in class Welcome2

sql
Fatal error: Trait method msg2 has not been applied, because there are collisions with the method in class Welcome2

working code

<!DOCTYPE html>
<html>
<body>

<?php
trait message1 {
  public function msg1() {
    echo "OOP is fun! "; 
  }
}

trait message2 {
  public function msg2() {
    echo "OOP reduces code duplication!"; 
  }
}

class Welcome {
  use message1;
}

class Welcome2 {
  use message1, message2;
}

$obj = new Welcome();
$obj->msg1();
echo "<br>";


$obj2 = new Welcome2();
$obj2->msg1();
$obj2->msg2();
?>
 
</body>
</html>

static function and whats the uses and how to write

write a static function in a controller

    public static function basics_form(){
           
   
        echo '
    
    
 
     <div class="container">
  
     <form action = "create_article" method = "post">
          <input   type = "hidden" name = "_token" value = "'; echo csrf_token(); echo '">
             
       <div class="form-group">
          <label for="title">Title <span class="form-required" title="This field is required.">*</span></label>
     <input required  type="text" id="title" placeholder="Enter The Title" name="title" value="" size="50" maxlength="50" class="form-control required">
    </div>
    <div class="form-group">
      <label for="pwd">Password:</label>
   <textarea required  type="text" id="edit-name" placeholder="55" name="content" value="" size="250" maxlength="250" class="form-control required"> </textarea>
          
   </div>
   <button type="submit" class="btn btn-default">Submit</button>
  </form>
</div>

  

        ';
        }

and

how to call that static function in view blade

 <?php use \App\Http\Controllers\AdminController; ?>
  
             {{ AdminController::basics_form() }}

without creating an instance we can call directly that static function

class MathHelper {

public static function add($num1, $num2) {

return $num1 + $num2;

}

$result = MathHelper::add(5, 3); // Calling static method directly

In this example, the add() method is defined as static in the MathHelper class. You can call it directly using MathHelper::add(5, 3) without creating an instance of the MathHelper class.

how to call a static function in same class

class MathHelper { public static function add($num1, $num2) { return $num1 + $num2; } public function vamsi() { $result = self::add(5, 3); return $result; } }

laravel

class A {

hasonethorugh

we can extend classes but why we are using trait

multiple try cathc method

multiple inheritance

multiple try catch

multiple catch

hsone through

    public function m() {
        return 'x';
    }
}
class B extends A {
    public function m() {
        return 'y';
    }
}



$instB = new B();
echo $instB->m();

$instA = new A();
echo $instA->m();

<?php       
error_reporting(E_ALL);
class A {
    public static function m() {
        echo 'M';
    }
    public function n() {
        // Write code to access m()
    }
}

$instA = new A();
$instA->n();

class A {
    public function m() {
        return;
    }
}
class B extends A {
    public function n() {
        return;
    }
}
class C extends B {
    public function o() {
        return;
    }
}
You11:45 AM
echo ::m();

XSS
function doSomething($a, ...$x) {
    // some operation
}

=======

$a = 5;
$b = 'a';
$c = 'b';

echo $$c;
======

$b = 5;
var_dump($b++ == ++$b);
echo $b;

$a = [
    'name' => 'A',
    'age' => 13
]
[
    'A',
    13
]

hasOneThrough
Posts
-----
id
title
desc

Comments
--------
id
post_id
text
author

$post = Post::find(1);

Get the authors for the comment only
hasmany('comment:classs,"select('name"));
PRI- Vamsi (Sean Atkinson)

laravel nova

download the file from code list cc

then

create laravel nova-app

composer install

composer update

dump-autoload

composer.json

"repositories": [
        {
            "type": "path",
            "url": "./nova"
        }
    ],

 "require": {
        "php": "^7.3|^8.0",
        "fruitcake/laravel-cors": "^2.0",
        "guzzlehttp/guzzle": "^7.0.1",
        "laravel/framework": "^8.75",
        "laravel/sanctum": "^2.11",
        "laravel/tinker": "^2.5",
        "laravel/nova": "*"
    },

visit this url

http://127.0.0.1:8000/nova/resources/users/new

sudo apt-get install php-dom

sudo apt install php-zip

sudo apt install php-mysql


php artisan nova:user
php artisan nova:publish


php artisan route:list





all

composer create-project laravel/laravel nova-app
composer install
cd nova-app/
composer install
composer update
which php.ini
php --ini
cd ../../
cd hpanel/
sh restart.sh 
cd nova-app/
composer install
php --ini
sudo apt-get install php-dom
sudo apt autoremove
composer install
composer update
composer dump-autoload
sudo chmod -R 777 storage
sudo chmod -R 777 storage/logs
php artisan key:generate
composer update
sudo apt install php-zip
php -m | grep zip
php -v
composer update
php artisan nova:install
php artisan migrate
sudo chmod -R 777 storage/logs
php artisan migrate
php -m | grep pdo_mysql
php artisan optimize:clear
php artisan config:clear
php --ini
php -m | grep pdo_mysql
php artisan migrate
cd ..
sh restart.sh 
sh stop.sh 
sh start-php-my-admin.sh 
sudo lsof -i:80
sudo kill 996
sudo lsof -i:80
sudo kill 76841
sudo lsof -i:80
sh restart.sh 
sh start-php-my-admin.sh 
php artisan migrate
cd nova-app/
php artisan migrate
sudo lsof-i:80
history
sudo lsof -i:80
sudo kill 10142
sudo lsof -i:80
sudo lsof -i:81
sudo lsof -i:8082
sudo lsof -i:8083
cd ../
sh restart.sh 
sh clear-all-cache.sh 
php artisan serve
php artisan storage:link
npm install
cd nova
npm install
cd ../
sh clear-all-cache.sh 
php artisan serve
php artisan optimize:clear
sudo chmod -R 777 storage
php artisan optimize:clear
sh clear-all-cache.sh 
php -v
sudo apt-get install php7.4.3-mysql
sudo apt install php-mysql
php artisan migrate
php artisan config:clear
php artisan nova:user
php artisan serve
php artisan optimize:clear
sudo chmod -R 777 storage
php artisan optimize:clear
sudo chmod -R 777 bootstrap/cache
php artisan optimize:clear
php artisan nova:publish
php artisan view:clear
php artisan clear-compiled
php artisan route:clear
php artisan config:cache
composer dump-autoload
php artisan route:list
 

github clone

git clone https://username:token@github.com/username/repo.git

go to settings

developer settings

token classic

generate token

use that toke above to pull

Web Develpers era