To create a connection with the database, you can use .env file.
Cookies are small file sent from a particular website and stored on PC by user’s browser while the user is browsing.
It is Model, View, and Controller:
<> Model: Model defines logic to write Laravel application.
<> View: It covers UI logic of Laravel application.
<> Controller: It is work as an interface between Model, and View. It is a way how the user interacts with an application.
In order to use a custom table, you can override the property of the protected variable $table.
Implicit Controllers help you to define a proper route to handle controller action. You can define them in route.php file with Route:: controller() method.
Following are basic concepts used in Laravel:
<> Routing
<> Eloquent ORM
<> Middleware
<> Security
<> Caching
<> Blade Templating
In active record, class map to your database table. It helps you to deal with CRUD operation.
<> Insert(): This function is simply used to insert a record into the database. It not necessary that ID should be autoincremented.
<> InsertGetId(): This function also inserts a record into the table, but it is used when the ID field is auto-increment.
Use hasTable() Laravel function to check the desired table is exists in the database or not.
It is a type of module or packages which are used to create fake data. This data can be used for testing purpose.
It is can also be used to generate: 1) Numbers, 2) Addresses, 3) DateTime, 4) Payments, and 5) Lorem text.
You can create all web pages of a website to tell the search engine about the organizing site content. The crawlers of search engine read this file intelligently to crawl a website.
<> delete(): remove all record from the database table.
<> softDeletes(): It does not remove the data from the table. It is used to flag any record as deleted.
Laravel provides APIs to send an email on local and live server.
This function is used to dump contents of a variable to the browser. The full form of dd is Dump and Die.
It is a database query builder that provides convenient, faster interface to create and run database queries.
The most common HTTP error codes are:
<> Error 404 – Displays when Page is not found.
<> Error- 401 – Displays when an error is not authorized
Laravel exceptions are handled by AppExceptionsHandler class.
Laravel has helpers to generate URLs. This is helpful when you build link in your templates and API response.
Lumen is a micro-framework. It is a smaller, and faster, version of a building Laravel based services, and REST API’s.
Migrations are important because it allows you to share application by maintaining database consistency. Without migration, it is difficult to share any Laravel application. It also allows you to sync database.
Laravel supports the following databases:
<> PostgreSQL
<> SQL Server
<> SQLite
<> MySQL
Blade is a powerful template engine utilized by Laravel.
Types of relationship in Laravel Eloquent are: 1) One To One 2) One To Many 3) Many To Many 4) Has Many Through, and 5) Polymorphic Relations.
While processing a large amount of data, you can use the cursor method in order to reduce memory usage.
ORM stands for Object Relational Mapping
Migrations are like version control for your database, that’s allow your team to easily modify and share the application’s database schema. Migrations are typically paired with Laravel’s schema builder to easily build your application’s database schema.
Use below commands to create migration data via artisan.
// creating Migration
php artisan make:migration create_users_table
An event is an occurrence or action that help you to subscribe and listen for events that occur in Laravel application. Some of the events are fired automatically by Laravel when any activity occurs.
You can use enableQueryLog method to enable query log in Laravel.
Service container is a tool used for performing dependency injection in Laravel.
One of the most powerful feature of Laravel is its Service Container. It is a powerful tool for resolving class dependencies and performing dependency injection in Laravel.
Dependency injection is a fancy phrase that essentially means class dependencies are “injected†into the class via the constructor or, in some cases, “setter†methods.
Migrations are like version control for your database, that’s allow your team to easily modify and share the application’s database schema. Migrations are typically paired with Laravel’s schema builder to easily build your application’s database schema.
Use below commands to create migration data via artisan.
// creating Migration
php artisan make:migration create_users_table
Default packages of Laravel 5.6 are: 1) Envoy, 2) Passport, 3) Socialite, 4) Cashier, 5) Horizon, and 6) Scout.
Get method allows you to send a limited amount of data in the header. Post allows you to send a large amount of data in the body.
All facades of Laravel have defined in IlluminateSupportFacades namespace.
You can register service providers in the config/app.php configuration file that contains an array where you can mention the service provider class name.
They are set of interfaces of Laravel framework. These contracts provide core services. Contracts defined in Laravel include corresponding implementation of framework.
Laravel traits are a group of functions that you include within another class. A trait is like an abstract class. You cannot instantiate directly, but its methods can be used in concreate class.
Reverse routing is a method of generating URL based on symbol or name. It makes your Laravel application flexible.
A controller is the “C†in the “MVC†(Model-View-Controller) architecture, which is what Laravel is based on.
Below are a list of some official/ default packages provided by Laravel
<> Cashier
<> Envoy
<> Passport
<> Scout
<> Socialite
<> Horizon
<> Telescope
PHP artisan is the command line interface/tool included with Laravel. It provides a number of helpful commands that can help you while you build your application easily. Here are the list of some artisan command:-
<> php artisan list
<> php artisan help
<> php artisan tinker
<> php artisan make
<> php artisan –versian
<> php artisan make model model_name
<> php artisan make controller controller_name
The installation of Laravel via composer is very easy. You can install Laravel via composer by running the below command in the command prompt.
composer create-project laravel/laravel your-project-name version
Laravel 8 is the latest version of Laravel. It was officially released on 11 Sep 2020. Laravel 8 has made with new features like Laravel Jetstream, Migration Squashing, Model Factory classes, Tailwind CSS (Used for Pagination Views), and usability improvements.
In Laravel, bundles are referred to as packages. These packages are used to increase the functionality of Laravel. A package can have views, configuration, migrations, routes, and tasks.
Routes are stored inside files under the /routes folder inside the project’s root directory. By default, there are a few different files corresponding to the different “sides†of the application (“sides†comes from the hexagonal architecture methodology).
A route is basically an endpoint specified by a URI (Uniform Resource Identifier). It acts as a pointer in Laravel application.
Most commonly, a route simply points to a method on a controller and also dictates which HTTP methods are able to hit that URI.
Aggregates methods of query builder are: 1) max(), 2) min(), 3) sum(), 4) avg(), and 5) count().
HTTP middleware is a technique for filtering HTTP requests. Laravel includes a middleware that checks whether application user is authenticated or not.
It is an application-level package manager for PHP. It provides a standard format for managing PHP software dependencies and libraries.
The latest Laravel version is version 8, which was released on September 8th, 2020.
Laravel is an open-source widely used PHP framework. The platform was intended for the development of web application by using MVC architectural pattern. Laravel is released under the MIT license.
Therefore, its source code is hosted on GitHub. It is a reliable PHP framework as it follows expressive and accurate language rules.