Laravel Framework Guide in PHP

Laravel is a popular PHP web application framework that brings a lot of convenience and innovation to web development. In this article, we will introduce you to the basics of Laravel and how to use it to build web applications.

Introduction to Laravel

Laravel is a framework that has been growing since 2011. It adopts modern PHP technology and architectural patterns, including dependency injection, service containers and template engines. wait. The core of this framework is its powerful routing system and ORM (Object Relational Mapping), which contains many useful functions and tools, making it one of the most popular PHP frameworks.

Installing Laravel

Before you start using Laravel, you need to install it on your machine. Laravel depends on Composer, a PHP dependency management tool, so you first need to install Composer.

Next, open the command line tool and enter the following code:

composer create-project laravel/laravel your-project-name

This will create a new Laravel project in the current directory.

Creating Controllers and Routes

Controllers in Laravel are used to handle web requests and return responses, while routing matches the URL to the controller's methods in order to handle the request correctly. We can generate controllers and routes through Laravel's Artisan command line tool.

Using the command line tool, enter the following code to generate the controller:

php artisan make:controller YourControllerName

This will create a new controller in the app/Http/Controllers directory.

Next, we want to create a route that maps requests to our controller methods. In the routes/web.php file, enter the following code to create a route:

Route::get('/your-url', 'YourControllerName@methodName');

This will map requests to /your-url to our controller method.

Using ORM

ORM (Object Relational Mapping) in Laravel maps database records into PHP objects, making it more intuitive and convenient to use in our applications. Laravel uses Eloquent ORM by default, which is a popular ORM tool.

First, we need to create a data table in the database and define a model to map this table.

Create a model using the Artisan command line tool:

php artisan make:model YourModelName

This will create a new model in the app directory.

Now, let us define the mapping relationship between the model and the data table. Open the newly created model file and define the mapping between the model and the data table in it:

class YourModelName extends Model
{    
    protected $table = 'your_table_name';    
    protected $fillable = ['column_name_1', 'column_name_2', '...'];
}

In the above code, we specify the name of the data table associated with the model, and the name of the data table we allow to The assigned column name. We can now use our model to add new records to the database, query existing records, and update and delete records.

Using Template Engine

Laravel uses the Blade template engine, which allows us to easily manage and render HTML in our View. Blade allows us to use functions such as template inheritance, annotations, conditional and loop control, which greatly improves our work efficiency.

In our controller method, we can render the View by:

public function methodName()
{    
    return view('your-view-name', ['variable_1' => $value_1, 'variable_2' => $value_2]);
}

In the above code, we pass the variable into our View so that we can Use these variables. In our View, we can use the Blade template engine to inherit other templates, output variables, write conditional statements and loop control, etc.

Summary

In this article, we introduced the basics of the Laravel framework and showed how to create controllers, routes, models, and use the template engine. The Laravel framework provides powerful tools and features for web development, helping developers improve work efficiency while providing better security and maintainability.

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