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HomePHP FrameworkLaravellaravel5.4 product modification

With the development of e-commerce, product display is becoming more and more important to e-commerce websites. In order to meet the needs of merchants, the website needs to create a good product display page and implement a convenient product management system. In this article, we will explore how to use Laravel 5.4 to implement the modification function of a product management system.

Prerequisite knowledge

Before we start, we need to master the basic knowledge of Laravel framework and Blade template.

  1. Laravel Introduction

Laravel is a free and open source PHP Web framework, written in PHP language and designed based on the MVC pattern (Model - View - Controller). The Laravel framework provides many tools and functions to implement efficient and scalable web applications.

  1. Blade Template Introduction

Blade is Laravel's template engine and is built on PHP Blade. Blade templates support extensions, allowing you to use default layouts, save code duplication, and easily interact with backend data.

Start implementing product modification

Before implementing product modification, we need to ensure that the Laravel environment and database connection have been configured. Next, we'll use Laravel's model to handle product data as objects.

  1. Create product model

In Laravel, models are used to interact with the database. Through the creating event and saved event handlers, we can perform certain operations before and after saving.

First, execute the following command in Laravel's command line to create a new model:

php artisan make:model Product

Next, we need to define the table name and fillable attributes in the model. Modify the app/Product.php file as follows:

<?php

namespace App;

use IlluminateDatabaseEloquentModel;

class Product extends Model
{
    protected $table = 'products';

    protected $fillable = ['name', 'description', 'price', 'image'];
}

In this model, we define the table name as products, and the mass-assignable attributes are name, description, price and image.

  1. Create product controller

In Laravel, a controller is a class used to handle HTTP requests. It can assign user requests to the appropriate method and return an HTTP response. . We need to create a controller and add methods to handle product modification operations.

Execute the following command in the command line to generate a new controller:

php artisan make:controller ProductController --resource

This command will create a ProductController.php file in the app/Http/Controllers directory and generate the basic RESTful resource methods (index, create, store, show, edit, update, destroy).

We will add an edit method to the controller to display the product modification form, and an update method to process the form data and save the updated product information.

Modify the code of app/Http/Controllers/ProductController as follows:

<?php

namespace AppHttpControllers;

use IlluminateHttpRequest;
use AppProduct;

class ProductController extends Controller
{
    public function edit($id)
    {
        $product = Product::findOrFail($id);
        return view('products.edit', compact('product'));
    }

    public function update(Request $request, $id)
    {
        $product = Product::findOrFail($id);
        $product->update($request->all());

        return redirect('/products');
    }
}

In the edit method, we query the product with the specified ID and pass it to the view. The view will render the product information and provide A modification form. In the update method, we update the product information and redirect to the product list page.

  1. Create product modification form

In Laravel, you can use the Blade template engine to create web pages. Next we will create a view to allow users to modify product information.

Create the resources/views/products/edit.blade.php file and add the following code:

{!! Form::model($product, ['method'=>'PATCH', 'action'=>['ProductController@update', $product->id], 'files'=>true]) !!}

<div class="form-group">
    {!! Form::label('name', '商品名称') !!}
    {!! Form::text('name', null, ['class'=>'form-control']) !!}
</div>

<div class="form-group">
    {!! Form::label('description', '商品描述') !!}
    {!! Form::text('description', null, ['class'=>'form-control']) !!}
</div>

<div class="form-group">
    {!! Form::label('price', '商品价格') !!}
    {!! Form::text('price', null, ['class'=>'form-control']) !!}
</div>

<div class="form-group">
    {!! Form::label('image', '商品图片') !!}
    {!! Form::file('image') !!}
</div>

<div class="form-group">
    {!! Form::submit('保存', ['class'=>'btn btn-primary']) !!}
</div>

{!! Form::close() !!}

In this template, we use Laravel's Form Builder to generate form elements. In the template, we use the $product object to render product information, bind the form to the model object through the Form::model() method, and set the request method for submitting data to PATCH.

In the form, we define the name, description, price and picture fields of the product, and also set a save button. When the user submits the form, the data will be submitted to the product's update method.

  1. Route Settings

In Laravel, routing is the mechanism used to match URLs and controller methods. We need to add routing rules for edit and update methods.

Open the routes/web.php file and add the following code:

Route::resource('products', 'ProductController');

Route::get('products/{id}/edit', 'ProductController@edit')->name('products.edit');

Route::patch('products/{product}', 'ProductController@update')->name('products.update');

In this code snippet, we create a RESTful resource route for the product using the Route::resource method of the resource controller. Next, we added routing rules for the edit method and update method, allowing us to access these methods through the corresponding URLs in the browser.

After completing the above operations, we can access the /products/{id}/edit page in the browser to modify the product.

Summary

In this article, we introduce in detail how to use the Laravel 5.4 framework to implement the product modification function.

By creating product models and controllers, creating product modification forms, and adding routing settings, we successfully created a Laravel-based product management system, and can easily modify and manage products.

The rapid development capabilities of the Laravel framework and the flexibility of the Blade template engine allow developers to easily build a convenient, easy-to-use, full-featured web application. It is highly recommended to use Laravel 5.4 to develop e-commerce web applications to provide a better experience for the majority of users.

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