Creating a package with Laravel 5.6 for a printing company ex: Alpha and the package name ex: Library.

composer.json

{
    "autoload": {
        "classmap": [
            "database/seeds",
            "database/factories"
        ],
        "psr-4": {
            "App\\": "app/",
            "Alpha\\Library\\": "packages/Library/src/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/",
            "Alpha\\Tests\\": "packages/Library/tests/"
        }
    }
}

config_app.php

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Autoloaded Service Providers
    |--------------------------------------------------------------------------
    |
    | The service providers listed here will be automatically loaded on the
    | request to your application. Feel free to add your own services to
    | this array to grant expanded functionality to your applications.
    |
    */

    'providers' => [

        /*
         * Laravel Framework Service Providers...
         */
      
      
        /**
         * Alpha Service Providers
         */
        Alpha\Library\LibraryServiceProvider::class,
    ],
];

packages_library_composer.json

{
  "name": "alpha/library",
  "description": "Library package to manage all library resource related features.",
  "authors": [
    {
      "name": "Juyal Ahmed",
      "email": "tojibon@gmail.com"
    }
  ],
  "autoload": {
    "psr-4": {
      "Alpha\\Library\\": "src/"
    }
  },
  "minimum-stability": "dev",
  "require": {
  }
}

packages_library_database_migrations_140304_create_authors_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
use Alpha\Library\Model\Author;

class CreateAuthorsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('authors', function (Blueprint $table) {
            $table->increments('id');
            $table->string('name', 120);
            $table->text('description')->nullable();
            $table->enum('status', Author::STATUSES)->nullable()->default(Author::STATUSES[0]);
            $table->date('joined_date')->nullable();
            $table->softDeletes();
            $table->timestamps();
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('authors');
    }
}
?>

packages_library_readme.md

Library Package Available API methods

Library package to manage all human resource related features for Alpha Prakashoni.

Author: Juyal Ahmed
Email: tojibon@gmail.com
Last Modified: 08.May.2019

AuthorsController

Display a listing of the resource.
GET /api/library/authors
ResponseBody:

[
    {
        "id": 1,
        "name": "Juyal Ahmed",
        "description": "A programming or personal article author.",
        "status": "Active",
        "joined_date": "2020-06-10",
        "deleted_at": null,
        "created_at": "2019-05-06 16:56:51",
        "updated_at": "2019-05-06 16:57:20"
    }
]

packages_library_src_Http_Controllers_AuthorsController.php

<?php

namespace Alpha\Library\Http\Controllers\API;

use App\Http\Controllers\Controller;
use Alpha\Library\Http\Requests\Authors\AuthorRequest;
use Alpha\Library\Model\Author;
use Illuminate\Http\Response;

class AuthorsController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        return response()->json(Author::all(), Response::HTTP_OK);
    }
    
    /**
     * Store a newly created resource in storage.
     *
     * @param App\Http\Requests\Authors\AuthorRequest $request
     * @return \Illuminate\Http\Response
     */
    public function store(AuthorRequest $request)
    {
        $input = $request->only(['name', 'description', 'status', 'joined_date']);
        $author = Author::create($input);
        return response()->json(['success' => true, 'data' => $author], Response::HTTP_CREATED);
    }
    
    /**
     * Display the specified resource.
     *
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        return response()->json(Author::findOrFail($id));
    }
    
    /**
     * Update the specified resource in storage.
     *
     * @param App\Http\Requests\Authors\AuthorRequest $request
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function update(AuthorRequest $request, $id)
    {
        $input = $request->only(['name', 'description', 'status', 'joined_date']);
        $author = Author::findOrFail($id);
        $author->update($input);
        return response()->json(['success' => true, 'data' => $author], Response::HTTP_OK);
    }
    
    /**
     * Remove the specified resource from storage.
     *
     * @param int $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        $author = Author::findOrFail($id);
        $author->delete();
        return response()->json(['success' => true, 'data' => null], Response::HTTP_NO_CONTENT);
    }
    
    /**
     * Display a dropdown with id and name field of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function dropdown()
    {
        return response()->json(Author::where('status', Author::STATUS_ACTIVE)->get()->pluck(['id', 'name']), Response::HTTP_OK);
    }
}
?>

packages_library_src_Http_Requests_Authors_AuthorRequest.php

<?php

namespace Alpha\Library\Http\Requests\Authors;

use Illuminate\Foundation\Http\FormRequest;

class AuthorRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }
  
    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'name' => 'required|max:120',
            'status' => 'nullable|in:' . implode(',', Author::STATUSES),
            'joined_date' => 'required|date_format:Y-m-d'
        ];
    }
}
?>

packages_library_src_LibraryServiceProvider.php

<?php

namespace Alpha\Library;

use Illuminate\Routing\Router;
use Illuminate\Support\ServiceProvider;

class LibraryServiceProvider extends ServiceProvider
{
    /**
     *
     * @param Router $router
     * @return void
     */
    public function boot(Router $router)
    {
        $this->loadRoutesFrom(__DIR__ . '/routes.php');
        $this->loadMigrationsFrom(__DIR__ . '/../database/migrations');
    }

    /**
     *
     *
     * @return void
     */
    public function register()
    {

    }
}

packages_library_src_Model_Author.php

<?php

namespace Alpha\Library\Model;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Author extends Model
{
    use SoftDeletes;
  
    /**
     * Lists of available statuses where first index is the default by migration.
     * Note: If you update this lists of Enum, please make sure you have created a migration for that accordingly.
     */
    const STATUSES = ['Active', 'Inactive', 'Hold'];
    
    const STATUS_ACTIVE = 'Active';
  
    protected $table = 'authors';
  
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name',
        'description',
        'status', 
        'joined_date'
    ];
}

packages_library_src_routes.php

<?php

use Illuminate\Support\Facades\Route;
use Alpha\Library\Http\Controllers\AuthorsController;

Route::prefix('api/library')
    ->middleware(['api', 'auth:api'])
    ->namespace(null)
    ->group(function () {
        Route::get('/authors', AuthorsController::class . '@index');
        Route::get('/authors/dropdown', AuthorsController::class . '@dropdown');
        Route::get('/authors/{id}', AuthorsController::class . '@show');
        Route::post('/authors', AuthorsController::class . '@store');
        Route::delete('/authors/{id}', AuthorsController::class . '@destroy');
        Route::put('/authors/{id}', AuthorsController::class . '@update');
    });
?>