How to develop and publish Laravel expansion pack to the Composer

Posted on 2019-01-22 cxp1539 1074 Vie

Development Expansion Pack

We do an expansion pack according to the first character or characters generated avatar laravel. In fact, the principle is to write ourselves a service provider, the service provider to configure the app / providers array.

1. The first step now has his own project to create packages / cxp / avatar / src directory with

2. Modify composer.json

"psr-4": {
    "App\\": "app/",
    "Cxp\\Avatar\\": "packages/cxp/avatar/src/"
}

Execution composer dumpautoload
src directory create Avatar.php specific code


/**
 * Created by PhpStorm.
 * User: mac
 * Date: 2019-01-10
 * Time: 14:06
 */
namespace Cxp\Avatar;
use Illuminate\Config\Repository;
class Avatar {
    protected $config;
    /**
     * 构造方法
     */
    public function __construct(Repository $config)
    {
        $this->config = $config->get('avatar');
    }
    /**
     * 生成图像
     * @return resource 图片资源
     */
    private function generate($name)
    {
        // 创建图片资源
        $img_res = imagecreate($this->config['width'], $this->config['height']);
        // 背景颜色
        $bg_color = imagecolorallocate($img_res, mt_rand(120, 190), mt_rand(120, 190), mt_rand(120, 190));
        // 文字颜色
        $font_color = imagecolorallocate($img_res, mt_rand(190, 255), mt_rand(190, 255), mt_rand(190, 255));
        // 填充背景色
        imagefill($img_res, 1, 1, $bg_color);
        // 计算文字的宽高
        $pos = imagettfbbox($this->config['size'], 0, $this->config['font_file'], mb_substr($name, 0, 1));
        $font_width = $pos[2] - $pos[0] + 0.32 * $this->config['size'];
        $font_height = $pos[1] - $pos[5] + -0.16 * $this->config['size'];
        // 写入文字
        imagettftext($img_res, $this->config['size'], 0, ($this->config['width'] - $font_width) / 2, ($this->config['height'] - $font_height) / 2 + $font_height, $font_color, $this->config['font_file'], mb_substr($name, 0, 1));
        return $img_res;
    }
    /**
     * 输出图片（默认输出到浏览器，给定输出文件位置则输出到文件）
     * @param string|false $path 保存路径
     */
    public function output($name, $path = false)
    {
        $img_res = $this->generate($name);
        // 确定输出类型和生成用的方法名
        $content_type = 'image/' . $this->config['type'];
        $generateMethodName = 'image' . $this->config['type'];
        // 确定是否输出到浏览器
        if (!$path) {
            header("Content-type: " . $content_type);
            $generateMethodName($img_res);
        } else {
            $generateMethodName($img_res, $path);
        }
        // 释放图片内存
        imagedestroy($img_res);
    }
}

Re-create the config directory src to access our configuration file parameters such as config / avatar.php


/**
 * Created by PhpStorm.
 * User: mac
 * Date: 2019-01-10
 * Time: 14:28
 */
return   [
    'type' => 'png', // jpeg|png|gif|bmp
    'width' => '100',
    'height' => '100',
    'size' => '26',
    'font_file' => public_path() . '/fonts/WawaSC-Regular.otf',
];

AvatarProvider.php create a service provider in src. Sign up for ioc container

namespace Cxp\Avatar;
use Illuminate\Support\ServiceProvider;
class AvatarProvider extends ServiceProvider
{
    /**
     * Bootstrap the application services.
     *
     * @return void
     */
    public function boot()
    {
        // 发布配置文件
        $this->publishes([
            __DIR__.'/config/avatar.php' => config_path('avatar.php'),
        ]);
    }
    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
        $this->app->singleton('avatar', function ($app) {
            return new Avatar($app['config']);
        });
    }
}

If you want to use Menlian, you can create Facades directory under the src directory offers Menlian

namespace Cxp\Avatar\Facades;
use Illuminate\Support\Facades\Facade;
class Avatar extends Facade
{
    protected static function getFacadeAccessor()
    {
        return 'avatar';
    }
}

Use Expansion Pack

We developed this complete, it changed how to use.

First released in the following configuration file config directory

php artisan vendor:publish

'providers' => [
    Cxp\Avatar\AvatarProvider::class,
]

'aliases' => [
    'Avatar' => Cxp\Avatar\Facades\Avatar::class,
]

Used in the program

Avatar::output('赵','zhao.png');

Expansion pack released

1. In performing avatar directory composer init, generating composer.json

{
    "name": "cxp/laravel-avatar",
    "description": "laravel avatar",
    "license": "MIT",
    "authors": [
        {
            "name": "cxp1539",
            "email": "[email protected]"
        }
    ],
    "autoload": {
      "psr-4": {
        "Cxp\\Avatar\\": "src"
      }
    },
    "require": {}
}

2. Create a project at github, code avatar directory pushed onto github.

3. Open https://packagist.org/ registered an account, submit the address git on it.

The sample code download link