Laravel 5 Basics (vii)-eloquent (Laravel's ORM)

• Let's build the first model.

php artisan make:model Article#输出Model created successfully.Created Migration: 2015_03_28_062517_create_articles_table

Look at the resulting fileapp/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# The following is the interactive input in Tinker psy Shell v0.4.1 (php 5.4.16-cli) by Justin hileman>>> $name = ' Zhang Jingli N ';=> "Zhang Jinglin" >>> $name = "Zhang Jinglin" >>> $article = new App\article;=> {}>>& Gt $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" = "Som" E content ... "," published_at "=  {date: "2015-03-28 06:37:22", Timezone_type:3, TimeZone: "UTC"}] >>> $article->save ();=> true# View data results, added a record >>> app\article::all ()->toarray ();=> [[ "id" = "1", "title" = "My First article", "Body" and "Some" Content ... "," published_at "=" 2015-03-28 06:37:22 "," Created_at "and" 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", "Bod Y "=" Some content ... "," published_at "=" 2015-03-28 06:37:22 "," created_at "and" = " 2015-03-28 06:38:53 "," Updated_at"= =" 2015-03-28 06:42:03 "] >>> $article = app\article::find (1);=> {ID:" 1 ", t Itle: "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 ', ' Som E 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 C Ontent ')->first ();=> {id: "1", Title: "My first Update title", Body: "Some content ...", Published_at: "2015-03-2 8 06:37:22 ", Created_at:" 2015-03-28 06:38:53 ", Updated_at:" 2015-03-28 06:42:03 "}>>> >>> $article = Ap P\article::create ([' title ' = ' new article ', ' body ' = ' new body ', ' published_at ' = Carbon\carbon::now ()]); Lluminate\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 ' = Ca Rbon\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 "," Crea Ted_at "=" 2015-03-28 06:38:53 "," updated_at "=" 2015-03-28 06:42:03 "], [" ID "+" 2 "," title "=" New article "," Body "and" 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 automatically call Save () 

Above introduces the Laravel 5 Foundation (vii)-eloquent (Laravel ORM), including the aspects of the content, want to be interested in PHP tutorial friends helpful.

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