laravel学习：模块化caffeinated

# Modules

Extract and modularize your code for maintainability. Essentially creates "mini-laravel" structures to organize your application.

• Installation
  • Config
• Basic Usage
  • Creating Modules
  • Manifest
  • Service Providers
  • Migrations
  • Enabling Modules
  • Disabling Modules
• Digging Deeper
  • Locations
  • Publishing Resources
  • Provided Middleware
  • Helpers
• API Reference
  • all
  • slugs
  • where
  • sortBy
  • sortByDesc
  • exists
  • count
  • getManifest
  • get
  • set
  • enabled
  • disabled
  • isEnabled
  • isDisabled
  • enable
  • disable

# Installation

Simply install the package through Composer. From here the package will automatically register its service provider and Module facade.

composer require caffeinated/modules

# Config

To publish the config file, run the following:

php artisan vendor:publish --provider="Caffeinated\Modules\ModulesServiceProvider" --tag="config"

Below you will find the contents of the provided config file for reference.

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Default Location
    |--------------------------------------------------------------------------
    |
    | This option controls the default module location that gets used while
    | using this package. This location is used when another is not explicitly
    | specified when exucuting a given module function or command.
    |
    */

    'default_location' => 'app',

    /*
    |--------------------------------------------------------------------------
    | Locations
    |--------------------------------------------------------------------------
    |
    | Here you may define all of the module locations for your application as
    | well as their drivers and other configuration options. This gives you
    | the flexibility to structure modules as you see fit in each location.
    |
    */

    'locations' => [
        'app' => [
            'driver'    => 'local',
            'path'      => app_path('Modules'),
            'namespace' => 'App\\Modules\\',
            'enabled'   => true,
            'provider'  => 'ModuleServiceProvider',
            'manifest'  => 'module.json',
            'mapping'   => [

                // Here you may configure the class mapping, effectivly
                // customizing your generated default module structure.

                'Config'              => 'Config',
                'Database/Factories'  => 'Database/Factories',
                'Database/Migrations' => 'Database/Migrations',
                'Database/Seeds'      => 'Database/Seeds',
                'Http/Controllers'    => 'Http/Controllers',
                'Http/Middleware'     => 'Http/Middleware',
                'Providers'           => 'Providers',
                'Resources/Lang'      => 'Resources/Lang',
                'Resources/Views'     => 'Resources/Views',
                'Routes'              => 'Routes'
            ],
        ],
    ],

    /*
    |--------------------------------------------------------------------------
    | Default Driver
    |--------------------------------------------------------------------------
    |
    | Here you may specify the default module storage driver that should be
    | used by the package. A "local" driver is available out of the box that
    | uses the local filesystem to store and maintain module manifests.
    |
    */

    'default_driver' => 'local',

    /*
     |--------------------------------------------------------------------------
     | Drivers
     |--------------------------------------------------------------------------
     |
     | Here you may configure as many module drivers as you wish. Use the
     | local driver class as a basis for creating your own. The possibilities
     | are endless!
     |
     */

    'drivers' => [
        'local' => 'Caffeinated\Modules\Repositories\LocalRepository',
    ],
];

# Basic Usage

When it comes to larger applications, instead of mixing and matching your controllers, models, etc. across the various domains of your project, modules can group related logic together into a tidy "package". Out of the box, modules are stored in the app/Modules directory. Later on we'll go over how you can change this location or even add additional locations to store your modules.

# Creating Modules

Modules can be created by the use of the make:module Artisan command:

php artisan make:module Blog

This command will generate all the necessary files and folders to get you up and running quickly at app/Modules/Blog.

You'll notice that the structure of modules closely resemble the default Laravel folder structure. This is intentional and should feel immediately familiar to you. Nothing too scary here!

# Manifest

One of the important files that must be present at the root of every module, is the module's manifest file: module.json. This file contains the info and identification of your module. You may also use this to store module-specific settings if you wish. Let's look at the contents provided out of the box and go over each in detail:

{
	"name": "Blog",
	"slug": "blog",
	"version": "1.0",
	"description": "Only the best blog module in the world!",
}

Property	Description
name *	The human-readable name of your module.
slug *	The slug of your module used to reference in commands and code.
version *	The version of your module.
description *	A simple description of your module.
order	You may also optionally pass in the order in which your module is loaded. Defaults to 9001.

* These properties are required in every manifest.

Once you've made a change to a manifest file, you will need to re-optimize your module manifest cache. You can do this by running the following Artisan command:

php artisan module:optimize

# Service Providers

Just as the case with Laravel packages, service providers are the connection points between your module and Laravel. A service provider is responsible for binding things into Laravel's service container and information Laravel where to load module resources such as views, configuration, and localization files.

A ModuleServiceProvider and RouteServiceProvider is provided out of the box with some defaults configured for your module's localization, view, migration, configuration, factory, and route files. Feel free to modify these files or create your own service providers as needed.

You may generate a new provider via the make:module:provider command:

php artisan make:module:provider blog PublisherServiceProvider

NOTE

Be sure to register your custom service providers within your ModuleServiceProvider. Refer to Laravel's service provider documentation as needed.

# Migrations

We've extended Laravel's migrations system to make it easier to work with migrations for your modules. Particularly, you're able to run, rollback, reset, and refresh migrations for individual modules separate from your application (or other modules). This makes it super easy to work with modules during development.

# Generating Migrations

To create a module migration, use the make:module:migration Artisan command:

php artisan make:module:migration blog create_posts_table

The new migration will be placed in your defined migrations directory (by default this is Database/Migrations). Migrations follow the same workflow and structure as any other Laravel migration, so be sure to check out the documention on them here for reference.

# Running Migrations

To run all of your outstanding module migrations, execute the module:migrate Artisan command:

php artisan module:migrate

You may optionally specificy the exact module you'd like to run migrations against by passing through the slug:

php artisan module:migrate blog

Lastly, every module migrate command accepts the use of the --location flag to specify which module location to target.

# Rolling Back Migrations

To rollback the latest migration operation, you use the module:migrate:rollback command.

php artisan module:migrate:rollback

The rollback command also supports the step option to rollback a certain number of migrations:

php artisan module:migrate:rollback --step=5

You may also specify the module you wish to rollback, specifically:

php artisan module:migrate:rollback blog

The module:migrate:reset command will roll back all of your module migrations or the migrations of the module you pass through:

php artisan module:migrate:reset

php artisan module:migrate:reset blog

# Enabling Modules

Modules may be enabled either through the module:enable artisan command or through the facade with enable():

php artisan module:enable blog

Module::enable('blog');

# Disabling Modules

Modules may be disabled either through the module:disable artisan command or through the facade with disable():

php artisan module:disable blog

Module::disable('blog');

# Digging Deeper

# Locations

You may configure as many locations for your modules as necessary. For example, you may to split up your "core" modules from optional "add-on" modules.

The location configuration is found in the config/modules.php file under "locations". Here you may customize locations as needed. By default, the package is configured to store and reference modules from the app/Modules directory.

Each location may have its own configuration options on how you'd like to structure your modules:

Property	Description
driver	The module driver to use for this location.
path	The root path where you wish to store modules for this location.
namespace	The root namespace used when generating modules for this location.
enabled	Whether or not modules are enabled by default or not in this location.
provider	The master provider class name for modules in this location.
manifest	The manifest filename for modules in this location. Must be a JSON file.
mapping	The custom mapping of directories for modules in this location.

# Publishing Resources

Typically, you will need to publish your module's resources to the application's own directories. This will allow users of your module to easily override your default resources.

To publish your module's resources to the application, you may call the service provider's publishes method within the boot method of your service provider. The publishes method accepts an array of module paths and their desired publish locations. For example, to publish a config file for your blog module, you may do the following:

/**
 * Perform post-registration booting of services.
 *
 * @return void
 */
public function boot()
{
    $this->publishes([
        module_path('blog', 'config/blog.php') => config_path('blog.php'),
    ]);
}

# Provided Middleware

The bundled Identify Module middleware provides the means to pull and store module manifest information within the session on each page load. This provides the means to identify routes from specific modules.

# Register

Simply register as a route middleware with a short-hand key in your app/Http/Kernel.php file.

protected $routeMiddleware = [
    ...
    'module' => \Caffeinated\Modules\Middleware\IdentifyModule::class,
];

# Usage

Now, you may simply use the middleware key in the route options array. The IdentifyModule middleware expects the slug of the module to be passed along in order to locate and load the relevant manifest information.

Route::group(['prefix' => 'blog', 'middleware' => ['module:blog']], function() {
    Route::get('/', function() {
        dd(
            'This is the Blog module index page.',
            session()->all()
        );
    });
});

# Results

If you dd() your session, you'll see that you have a new module array key with your module's manifest information available.

"This is the Blog module index page."
array:2 [▼
  "_token" => "..."
  "module" => array:6 [▼
    "name" => "Blog"
    "slug" => "blog"
    "version" => "1.0"
    "description" => "This is the description for the Blog module."
    "enabled" => true
    "order" => 9001
  ]
]

# Helpers

Caffeinated Modules includes a handful of global "helper" PHP functions. These are used by the package itself; however, you are free to use them in your own code if you find them convenient.

---

modules module_path module_class

---

# modules

The modules function returns a collection of all modules and their accompanying manifest information.

$modules = modules();

# module_path

The module_path function returns the fully qualified path to the specified module's directory. You may also use the module_path function to generate a fully qualified path to a file relative to the module:

$path = module_path('blog');

$path = module_path('blog', 'Http/Controllers/BlogController.php');

If your module is not found within your configured default location, you may pass a third option to specify the location:

$path = module_path('blog', 'Http/Controllers/BlogController.php', 'add-on');

# module_class

The module_class function returns the full namespace path of the specified module and class.

$namespace = module_class('blog', 'Http\Controllers\BlogController');

If your module is not found within your configured default location, you may pass a third option to specify the location:

$namespace = module_class('blog', 'Http\Controllers\BlogController', 'add-on');

# API Reference

all slugs where sortBy sortByDesc exists count getManifest get set enabled disabled isEnabled isDisabled enable disable

---

# all

Get all modules, returned as a Collection.

$modules = Module::all();

# slugs

Get all modules, returned as a Collection.

$modules = Module::slugs();

# where

Find a module based on a where clause, returns a Collection.

$blogModule = Module::where('slug', 'blog');

# sortBy

Get all modules sorted by key in ascending order, returned as a Collection.

$modules = Module::sortBy('name');

# sortByDesc

Get all modules sorted by key in descending order, returned as a Collection.

$modules = Module::sortByDesc('name');

# exists

Check if given module exists, returns a Boolean.

if (Module::exists('blog')) {
    // Do something with it
}

# count

Returns a count of all modules.

$count = Module::count();

# getManifest

Get a module's manifest contents, returned as a Collection.

$manifest = Module::getManifest('blog');

# get

Returns the given module manifest property value. If a value is not found, you may define a default value as the second parameter.

$name = Module::get('blog::post_limit', 15);

# set

Set the given module manifest property value.

Module::get('blod::description', 'This is a fresh new description of the blog module.');

# enabled

Gets all enabled modules, returned as a Collection.

$enabled = Module::enabled();

# disabled

Gets all disabled modules, returned as a Collection.

$disabled = Module::disabled();

# isEnabled

Checks if the given module is enabled, returns a Boolean.

if (Module::isEnabled('blog')) {
    // Do something
}

# isDisabled

Checks if the given module is disabled, returns a Boolean.

if (Module::isDisabled('blog')) {
    // Do something
}

# enable

Enable the given module.

Module::enable('blog');

# disable

Disable the given module.

Module::disable('blog);