这期内容当中小编将会给大家带来有关Laravel 5框架中Eloquent 如何使用,文章内容丰富且以专业的角度为大家分析和叙述,阅读完这篇文章希望大家可以有所收获。
我们来生成第一个模型
代码如下:
php artisan make:model Article
#输出
Model created successfully.
Created Migration: 2015_03_28_062517_create_articles_table
查看一下生成的文件 app/Article.php
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。
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: "2015-03-28 06:37:22", timezone_type: 3, timezone: "UTC" } >>> $article; => { title: "My First Article", body: "Some content...", published_at: { date: "2015-03-28 06:37:22", timezone_type: 3, timezone: "UTC" } } >>> $article->toArray(); => [ "title" => "My First Article", "body" => "Some content...", "published_at" => { date: "2015-03-28 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" => "2015-03-28 06:37:22", "created_at" => "2015-03-28 06:38:53", "updated_at" => "2015-03-28 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" => "2015-03-28 06:37:22", "created_at" => "2015-03-28 06:38:53", "updated_at" => "2015-03-28 06:42:03" ] ] >>> $article = App\Article::find(1); => { id: "1", title: "My First Update Title", body: "Some content...", published_at: "2015-03-28 06:37:22", created_at: "2015-03-28 06:38:53", updated_at: "2015-03-28 06:42:03" } >>> $article = App\Article::where('body', 'Some content...')->get(); => [ { id: "1", title: "My First Update Title", body: "Some content...", published_at: "2015-03-28 06:37:22", created_at: "2015-03-28 06:38:53", updated_at: "2015-03-28 06:42:03" } ] >>> $article = App\Article::where('body', 'Some content...')->first(); => { id: "1", title: "My First Update Title", body: "Some content...", published_at: "2015-03-28 06:37:22", created_at: "2015-03-28 06:38:53", updated_at: "2015-03-28 06:42:03" } >>> >>> $article = App\Article::create(['title' => 'New Article', 'body' => 'New body', 'published_at' => Carbon\Carbon::now()]); Illuminate\Database\Eloquent\MassAssignmentException with message 'title' 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
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(['title' => 'New Article', 'body' => 'New body', 'published_at' => Carbon\Carbon::now()]); =>{ title: "New Article", body: "New body", published_at: { date: "2015-03-28 06:55:19", timezone_type: 3, timezone: "UTC" }, updated_at: "2015-03-28 06:55:19", created_at: "2015-03-28 06:55:19", id: 2 } # It's ok >>> App\Article::all()->toArray(); => [ [ "id" => "1", "title" => "My First Update Title", "body" => "Some content...", "published_at" => "2015-03-28 06:37:22", "created_at" => "2015-03-28 06:38:53", "updated_at" => "2015-03-28 06:42:03" ], [ "id" => "2", "title" => "New Article", "body" => "New body", "published_at" => "2015-03-28 06:55:19", "created_at" => "2015-03-28 06:55:19", "updated_at" => "2015-03-28 06:55:19" ] ] >>> $article = App\Article::find(2); => { id: "2", title: "New Article", body: "New body", published_at: "2015-03-28 06:55:19", created_at: "2015-03-28 06:55:19", updated_at: "2015-03-28 06:55:19" } >>> $article->update(['body' => 'New Updaet Body']); => true #update自动调用save() 上述就是小编为大家分享的Laravel 5框架中Eloquent 如何使用了,如果刚好有类似的疑惑,不妨参照上述分析进行理解。如果想知道更多相关知识,欢迎关注创新互联行业资讯频道。
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