后端开发|php教程
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后端开发-php教程
我们来生成第一个模型
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php artisan make:model Article#输出Model created successfully.Created Migration: _03_28_062517_create_articles_table
查看一下生成的文件app/Article.php
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<?php namespace App;use Illuminate\Database\Eloquent\Model;class Article extends Model {//}
没什么特别的，除了继承自 Model 以外，但是具有强大的功能，这些都封装在laravel的Model中。模型自动具有了save() update() findXXX()等强大的功能。
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tinker 是 laravel提供的命令行工具，可以和项目进行交互。
php artisan tinker#以下是在tinker中的交互输入Psy Shell v0.4.1 (PHP 5.4.16 — cli) by Justin Hileman>>> $name = zhang jinglin;=> "zhang jinglin">>> $name=> "zhang jinglin">>> $article = new App\Article;=> {}>>> $article->title = My First Article;=> "My First Article">>> $article->body = Some content...;=> "Some content...">>> $article->published_at = Carbon\Carbon::now();=> { date: "-03-28 06:37:22", timezone_type: 3, timezone: "UTC" }>>> $article;=> { title: "My First Article", body: "Some content...", published_at: { date: "-03-28 06:37:22", timezone_type: 3, timezone: "UTC" } }>>> $article->toArray();=> [ "title" => "My First Article", "body" => "Some content...", "published_at" => { date: "-03-28 06:37:22", timezone_type: 3, timezone: "UTC" } ]>>> $article->save();=> true#查看数据结果，添加了一条记录>>> App\Article::all()->toArray();=> [ [ "id" => "1", "title" => "My First Article", "body" => "Some content...", "published_at" => "-03-28 06:37:22", "created_at" => "-03-28 06:38:53", "updated_at" => "-03-28 06:38:53" ] ]>>> $article->title = My First Update Title;=> "My First Update Title">>> $article->save();=> true>>> App\Article::all()->toArray();=> [ [ "id" => "1", "title" => "My First Update Title", "body" => "Some content...", "published_at" => "-03-28 06:37:22", "created_at" => "-03-28 06:38:53", "updated_at" => "-03-28 06:42:03" ] ] >>> $article = App\Article::find(1);=> { id: "1", title: "My First Update Title", body: "Some content...", published_at: "-03-28 06:37:22", created_at: "-03-28 06:38:53", updated_at: "-03-28 06:42:03" }>>> $article = App\Article::where(ody, Some content...)->get();=> [ { id: "1", title: "My First Update Title", body: "Some content...", published_at: "-03-28 06:37:22", created_at: "-03-28 06:38:53", updated_at: "-03-28 06:42:03" } ]>>> $article = App\Article::where(ody, Some content...)->first();=> { id: "1", title: "My First Update Title", body: "Some content...", published_at: "-03-28 06:37:22", created_at: "-03-28 06:38:53", updated_at: "-03-28 06:42:03" }>>> >>> $article = App\Article::create([ itle => New Article, ody => New body, published_at => Carbon\Carbon::now()]);Illuminate\Database\Eloquent\MassAssignmentException with message itle
MassAssignmentException，laravel保护我们不能直接插入记录。比如，在一些特殊情况下我们需要直接利用表单的信息填充数据库记录，但是如果我们并没有在表单中添加密码字段，而黑客产生了密码字段连同我们的其他字段一起送回服务器，这将产生修改密码的危险，所以我们必须明确的告诉laravel我们的模型那些字段是可以直接填充的。
修改我们的模型文件Article.php
<?php namespace App;use Illuminate\Database\Eloquent\Model;class Article extends Model {protected $fillable = [ itle, ody, published_at ];}
表示，title, body, published_at 是可以直接填充的。
退出 tinker，重新进入
>>> $article = App\Article::create([ itle => New Article, ody => New body, published_at => Carbon\Carbon::now()]);=> { title: "New Article", body: "New body", published_at: { date: "-03-28 06:55:19", timezone_type: 3, timezone: "UTC" }, updated_at: "-03-28 06:55:19", created_at: "-03-28 06:55:19", id: 2 } # Its ok>>> App\Article::all()->toArray();=> [ [ "id" => "1", "title" => "My First Update Title", "body" => "Some content...", "published_at" => "-03-28 06:37:22", "created_at" => "-03-28 06:38:53", "updated_at" => "-03-28 06:42:03" ], [ "id" => "2", "title" => "New Article", "body" => "New body", "published_at" => "-03-28 06:55:19", "created_at" => "-03-28 06:55:19", "updated_at" => "-03-28 06:55:19" ] ]>>> $article = App\Article::find(2);=> { id: "2", title: "New Article", body: "New body", published_at: "-03-28 06:55:19", created_at: "-03-28 06:55:19", updated_at: "-03-28 06:55:19" }>>> $article->update([ody => New Updaet Body]);=> true#update自动调用save()
以上就介绍了Laravel 5 基础（七）- Eloquent （laravel 的ORM），包括了方面的内容，希望对PHP教学有兴趣的朋友有所帮助。
