Create a CRUD Application with Laravel 5.2 part-1

 

let’s create a simple CRUD application with Laravel . we have updated This tutorial to laravel 5.2 . The application we want to create will manage the users of our application. We will create the following list of features for our application:

• List users (read users from the database)
• Create new users
• Edit user information
• Delete user information
• Adding pagination to the list of users

Now to start off with things, we would need to set up a database. So if you have phpMyAdmin installed with your local web server setup, head over to http://localhost/phpmyadmin; if you don’t have phpMyAdmin installed, use the MySQL admin tool workbench to connect with your database and create a new database.
Requirements -> html form –> please install this and follow instructions from official site

Preview

Now we need to configure Laravel to connect with our database. So head over to your Laravel application folder, open config/database.php, change the MySQL array, and match your current database settings. Here is the MySQL database array from database.php file:

    'mysql' => array(
      'driver'    => 'mysql',
      'host'      => 'localhost',
      'database'  => '<yourdbname>',
      'username'  => 'root',
      'password'  => '<yourmysqlpassord>',
      'charset'   => 'utf8',
      'collation' => 'utf8_unicode_ci',
      'prefix'    => '',
    ),

Now we are ready to work with the database in our application. Let’s first create the database table Users via the following SQL queries from phpMyAdmin or any MySQL database admin tool;

CREATE TABLE IF NOT EXISTS 'users' (
  'id' int(10) unsigned NOT NULL AUTO_INCREMENT,
  'username' varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  'password' varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  'email' varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  'phone' varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  'name' varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  'created_at' timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
  'updated_at' timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
  PRIMARY KEY ('id')
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci AUTO_INCREMENT=3 ;

Now let’s seed some data into the Users table so when we fetch the users we won’t get empty results. Run the following queries into your database admin tool:

INSERT INTO 'users' ('id', 'username', 'password', 'email', 'phone', 'name', 'created_at', 'updated_at') VALUES
(1, 'john', 'johndoe', 'johndoe@gmail.com', '123456', 'John', '2013-06-07 08:13:28', '2013-06-07 08:13:28'),
(2, 'amy', 'amy.deg', 'amy@outlook.com', '1234567', 'amy', '2013-06-07 08:14:49', '2013-06-07 08:14:49');

Note

Later we will see how we can manage our database via laravel 5.2’s powerful migrations features. At the end of this chapter, I will introduce you to why it’s not a good practice to manually create SQL queries and make changes to the database structure. And I know that passwords should not be plain too!

Listing the users – read users from database

Let’s read users from the database. We would need to follow the steps described to read users from database:

• A route that will lead to our page
• A controller that will handle our method
• The Eloquent Model that will connect to the database
• A view that will display our records in the template

So let’s create our route at /app/http/routes.php. Add the following line to the routes.php file:

Route::resource('users', 'UserController');

If you have noticed previously, we had Route::get for displaying our page Controller. But now we are using resource. So what’s the difference?
In general we face two types of requests during web projects: GET and POST. We generally use these HTTP request types to manipulate our pages, that is, you will check whether the page has any POST variables set; if not, you will display the user form to enter data. As a user submits the form, it will send a POST request as we generally define the <form method="post"> tag in our pages. Now based on page’s request type, we set the code to perform actions such as inserting user data into our database or filtering records.
What Laravel provides us is that we can simply tap into either a GET or POST request via routes and send it to the appropriate method. Here is an example for that:

Route::get('/register', 'UserController@showUserRegistration');
Route::post('/register', 'UserController@saveUser');

See the difference here is we are registering the same URL, /register, but we are defining its GET method so Laravel can call UserController class’ showUserRegistration method. If it’s the POST method, Laravel should call the saveUser method of the UserController class.
You might be wondering what’s the benefit of it? Well six months later if you want to know how something’s happening in your app, you can just check out the routes.php file and guess which Controller and which method of Controller handles the part you are interested in, developing it further or solving some bug. Even some other developer who is not used to your project will be able to understand how things work and can easily help move your project. This is because he would be able to somewhat understand the structure of your application by checking routes.php.
Now imagine the routes you will need for editing, deleting, or displaying a user. Resource Controller will save you from this trouble. A single line of route will map multiple restful actions with our resource Controller. It will automatically map the following actions with HTTP verbs:

HTTP VERB	ACTION
GET	READ
POST	CREATE
PUT	UPDATE
DELETE	DELETE