Zak Dyer

Zak Dyer

1650429033

Laravel 9 Exists Validation | Implement Exists Validation in Laravel 9 Form

This tutorial will teach you how to implement existing validation in the laravel form using the laravel exists method.

Laravel 9 Exists Validation Example

  • Step 1: Download New Laravel App
  • Step 2: Database Connection
  • Step 3: Create Migration and Model
  • Step 4: Setting Up Controller
  • Step 5: Create Routes
  • Step 5: Set Up Blade View Template
  • Step 6: View App

Download New Laravel App

No matter on which machine you are creating the laravel app, one thing is imperative that you have to install Composer globally.

After doing the needful, lay the foundation of this tutorial by installing the fresh laravel application.

composer create-project laravel/laravel --prefer-dist blog

Database Connection

In this step, you have to make the database connection by adding the database details in .env file.

DB_CONNECTION=mysql
DB_HOST=localhost
DB_PORT=3306
DB_DATABASE=laravel_db
DB_USERNAME=root
DB_PASSWORD=

Create Migration and Model

In this step, we will run the command and generate migration and model files.

php artisan make:model Blog -m

Get into the database/migrations/create_blogs_table.php and insert the values as suggested.

<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateBlogsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('blogs', function (Blueprint $table) {
            $table->id();
            $table->string('title');
            $table->timestamps();
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('blogs');
    }
}

Similar value has to be updated inside the app/Blog.php file.

<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
class Blog extends Model
{
    use HasFactory;
    public $fillable = [
        'title',
    ];
}

Initialize the migration using the php artisan command.

php artisan migrate

Setting Up Controller

Get into the terminal and run the command to generate a new controller.

php artisan make:controller BlogController

Head over to the new controller on the following path, the app/Http/Controller/BlogController.php file and update the given code into it.

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\Blog;

class BlogController extends Controller
{
    public function index() {
        return view('index');
    }
    public function store(Request $request) {
       $validator = $this->validate($request, [
          'title' => 'required|exists:blogs,created_at'
       ]);
       if($validator) {
          Blog::create($request->all());
       }
       
       return back()->with('success', 'Blog created.');
    }
  
}

Create Routes

In the next step, you have to go to routes/web.php and create the routes for handling view and laravel exists validation.

<?php
use Illuminate\Support\Facades\Route;
use App\Http\Controllers\BlogController;

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
Route::get('/', [
    BlogController::class,'index'
]);
Route::post('validate-exists', [
    BlogController::class,'store'
])->name('validate.exists');

Set Up Blade View Template

Go to resources/views/ directory, after that create a index.blade.php within this file define the following code.

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Integrate Exists Validation in Laravel</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.0/dist/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <div class="container mt-5">
        <form action="{{ route('validate.exists') }}" method="post">
            @csrf
            <div class="form-group">
                <input class="form-control" name="title" value="{{ old('title') }}">
                
                @if($errors->has('title'))
                  <span class="text-danger">{{ $errors->first('title') }}</span>
                @endif
            </div>
            <div class="d-grid mt-3">
                <button class="btn btn-dark">Submit</button>
            </div>
        </form>
    </div>
</body>
</html>

We are using the global old helper; it helps display the old input within a blade template.

You can define the database column name that should be used by the validation rule by appending it right after the database table name.

Also, instead of specifying the table name directly, you may specify the Eloquent model which should be used to determine the table name.

'id' => 'exists:App\Models\Blog,id'

Start Laravel Application

Last but not least start the laravel app using the following command.

php artisan serve

You can open the app on the following url for testing the form.

http://127.0.0.1:8000

How to Implement Exists Validation in Laravel Form

Summary

In this tutorial, we have learned how to validate an input field value with the laravel exists method. Moreover, looked at how the basic usage of exists rule is applied in laravel.

#laravel #php 

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Buddha Community

Laravel 9 Exists Validation | Implement Exists Validation in Laravel 9 Form

Yogi Gurjar

1600308055

Laravel 8 Form Validation Tutorial

Laravel 8 form validation example. In this tutorial, i will show you how to submit form with validation in laravel 8.

And you will learn how to store form data in laravel 8. Also validate form data before store to db.

How to Validate Form Data in Laravel 8

  1. Step 1 – Install Laravel 8 Application
  2. Step 2 – Configuring Database using Env File
  3. Step 3 – Create Model & Migration File For Form
  4. Step 4 – Create Routes
  5. Step 5 – Creating Controller
  6. Step 6 – Create Blade File For Form
  7. Step 7 – Start Development Server
  8. Step 8 – Run Laravel 8 Form Validation App On Browser

https://laratutorials.com/laravel-8-form-validation-example-tutorial/

#laravel 8 form validation #laravel 8 form validation tutorial #laravel 8 form validation - google search #how to validate form data in laravel 8 #form validation in laravel 8

websolution stuff

websolution stuff

1623216000

Laravel 8 Form Validation Example

In this tutorial we will see laravel 8 form validation example, form validation in laravel is very common functionalities and it is use in each and every website to validate form field.

Here, We will use has function in session to check error message in laravel 8. using this example you can check simple form validation as well as you can create your own custom validation in laravel 8.

Laravel 8 Form Validation Example

https://websolutionstuff.com/post/laravel-8-form-validation-example

Read Also : Laravel 8 CRUD Operation Example

https://websolutionstuff.com/post/laravel-8-crud-operation-example

#laravel 8 form validation example #form validation #how to validate form in laravel 8 #form validation in laravel #laravel #laravel8

Hertha Mayer

Hertha Mayer

1594769515

How to validate mobile phone number in laravel with example

Data validation and sanitization is a very important thing from security point of view for a web application. We can not rely on user’s input. In this article i will let you know how to validate mobile phone number in laravel with some examples.

if we take some user’s information in our application, so usually we take phone number too. And if validation on the mobile number field is not done, a user can put anything in the mobile number field and without genuine phone number, this data would be useless.

Since we know that mobile number can not be an alpha numeric or any alphabates aand also it should be 10 digit number. So here in this examples we will add 10 digit number validation in laravel application.

We will aalso see the uses of regex in the validation of mobile number. So let’s do it with two different way in two examples.

Example 1:

In this first example we will write phone number validation in HomeController where we will processs user’s data.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\User;

class HomeController extends Controller
{
    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        return view('createUser');
    }

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        $request->validate([
                'name' => 'required',
                'phone' => 'required|digits:10',
                'email' => 'required|email|unique:users'
            ]);

        $input = $request->all();
        $user = User::create($input);

        return back()->with('success', 'User created successfully.');
    }
}

Example 2:

In this second example, we will use regex for user’s mobile phone number validation before storing user data in our database. Here, we will write the validation in Homecontroller like below.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\User;
use Validator;

class HomeController extends Controller
{
    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        return view('createUser');
    }

    /**
     * Show the application dashboard.
     *
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        $request->validate([
                'name' => 'required',
                'phone' => 'required|regex:/^([0-9\s\-\+\(\)]*)$/|min:10',
                'email' => 'required|email|unique:users'
            ]);

        $input = $request->all();
        $user = User::create($input);

        return back()->with('success', 'User created successfully.');
    }
}

#laravel #laravel phone number validation #laravel phone validation #laravel validation example #mobile phone validation in laravel #phone validation with regex #validate mobile in laravel

Yogi Gurjar

1600307723

Laravel 8 Form Example Tutorial - Complete Guide

Laravel 8 form example. In this tutorial, i would love to show you how to create form in laravel. And how to insert data into database using form in laravel 8.

How to Submit Form Data into Database in Laravel 8

  1. Step 1 – Install Laravel 8 Application
  2. Step 2 – Configuring Database using Env File
  3. Step 3 – Create Model & Migration File For Add Blog Post Form
  4. Step 4 – Create Routes
  5. Step 5 – Creating Controller
  6. Step 6 – Create Blade File For Add Blog Post Form
  7. Step 7 – Start Development Server
  8. Step 8 – Run Laravel 8 Form App On Browser

https://laratutorials.com/laravel-8-form-example-tutorial/

#insert form data into database using laravel #laravel bootstrap form #laravel post forms #laravel 8 form tutorial #laravel 8 form example #laravel 8 form submit tutorial

I am Developer

1597565398

Laravel 7/6 Image Validation

In this image validation in laravel 7/6, i will share with you how validate image and image file mime type like like jpeg, png, bmp, gif, svg, or webp before uploading image into database and server folder in laravel app.

https://www.tutsmake.com/image-validation-in-laravel/

#laravel image validation #image validation in laravel 7 #laravel image size validation #laravel image upload #laravel image validation max #laravel 6 image validation