How to Make Form Validation in Laravel Inertia and Vue

1 year ago admin Laravel

In this lesson, we are going to see how to make form validation in Laravel Inertia js and Vue js, let's assume that we have a task application and we want to validate a form before storing a new task.


Create the controller

Inside the controller, before we store the new task we validate the data coming from the form.

                                                    
                                                                                                                
<?php

namespace App\Http\Controllers;

use App\Models\Task;
use Illuminate\Http\Request;

class TaskController extends Controller
{
    /**
     * Store a newly created resource in storage.
     */
    public function store(Request $request)
    {
        //
        $this->validate($request, [
            'title' => 'required',
            'body' => 'required',
            'category_id' => 'required',
        ]);

        Task::create([
            'title' => $request->title,
            'body' => $request->body,
            'category_id' => $request->category_id,
        ]);

        return redirect()->route('home')->with([
            'message' => 'Task added successfully',
            'class' => 'alert alert-success'
        ]);
    }
}

Display the form validation errors

To display the form validation errors in your component you can use the form helper provided by inertia js.

                                                        
                                                                                                                        
<template>
    <div class="container">
        <div className="row my-5">
            <div className="col-md-6 mx-auto">
                <div className="card">
                    <div className="card-header bg-white">
                        <h5 className="text-center mt-2">
                            Create new task
                        </h5>
                    </div>
                    <div className="card-body">
                        <form @submit.prevent="addNewTask" className="mt-5">
                            <div className="mb-3">
                                <label htmlFor="title" className="form-label">Title*</label>
                                <input 
                                    type="text" 
                                    v-model="form.title"
                                    className="form-control" 
                                    placeholder="Title*">
                                <div v-if="form.errors.title" class="text-white bg-danger p-2 rounded my-2">{{ form.errors.title }}</div>
                            </div>
                            <div className="mb-3">
                                <label htmlFor="body" className="form-label">Description*</label>
                                <textarea 
                                    className="form-control" 
                                    v-model="form.body"
                                    placeholder="Body*"
                                    rows="3"></textarea>
                                <div v-if="form.errors.body" class="text-white bg-danger p-2 rounded my-2">{{ form.errors.body }}</div>
                            </div>
                            <div className="mb-3">
                                <label htmlFor="category_id" className="form-label">Category*</label>
                                <select v-model="form.category_id" class="form-control">
                                    <option disabled selected value="">Choose a category</option>
                                    <option v-for="category in categories" :key="category.id" 
                                        :value="category.id">{{ category.name }}</option>
                                </select>
                                <div v-if="form.errors.category_id" class="text-white bg-danger p-2 rounded my-2">{{ form.errors.category_id }}</div>
                            </div>
                            <div className="mb-3">
                                <button
                                    type="submit" 
                                    className="btn btn-primary">
                                    Create
                                </button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>

<script setup>
    import { useForm } from "@inertiajs/vue3";

    const form = useForm({
        title: '',
        body: '',
        category_id: ''
    });

    const props = defineProps({
        categories: {
            type: Array,
            required: true
        }
    });

    const addNewTask = () => {
        form.post('/tasks');
    }
</script>


<style>
</style>

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