其实也就是一个嵌套的 EXISTS 查询: 此外,还有一个 orHas 方法,顾名思义,它会执行一个 OR 查询,比如我们想要过滤包含评论或标签的文章: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 $posts = Post::has('comments')->orHas('tags')->get(); 如果你想要通过更复杂的关联查询过滤模型实例,还可...
You may call the enforceMorphMap method in the boot method of your App\Providers\AppServiceProvider class or create a separate service provider if you wish.You may determine the morph alias of a given model at runtime using the model's getMorphClass method. Conversely, you may determine the...
1// Create a new user in the database... 2$user = User::create(array('name' => 'John')); 3 4// Retrieve the user by the attributes, or create it if it doesn't exist... 5$user = User::firstOrCreate(array('name' => 'John')); 6 7// Retrieve the user by the ...
User::create(Input::all());这种模式虽然创建新user时非常方便,但是对于hacker来说,提供了一种非常便利地修改后台数据的方法,比如在user create form中,除了username,password外,hacker可能会在客户端增加一个hidden field: active,在用户提交username,password的同时,将active也设置为true,这时由于我们后台代码未作保护...
中使用MongoDB 使用Composer创建一个Laravel项目 composer create-project --prefer-dist laravel/laravel laravel-mongodb-exploer...注意只有viewers中存在collection时, 上面结果才会显示viewers use viewers; 使用数据库后,需要创建colleciton db.ad_clicks.insert({"ip...DB中查询MongoDB 使用了Laravel-MongoDB扩展,...
接口更接近SQL原生的使用方法,比如:where/join/select/insert/delete/update等,都很容易在数据库的体系内找到相应的操作或指令;EloquentBuilder是对Builder的再封装,EloquentBuilder在Builder的基础之上,定义了一些更复杂,但更便捷的描述接口(见官方文档【Eloquent ORM - 快速入门】一章。),比如:first/firstOrCreate/...
Sometimes you may need to create more advanced where clauses such as "where exists" or nested parameter groupings. The Laravel query builder can handle these as well. To get started, let's look at an example of grouping constraints within parenthesis:DB::table('users') ->where('name', ...
If you think that you have found a security issue in Bagisto, please do not use the issue tracker and do not post it publicly. Instead, all security issues must be sent to mailto:support@bagisto.com. Contributors This project is on Open Collective, and it exists thanks to the people ...
As you can see, this method takes a closure as an argument, which makes it possible to update a value based upon its old value.Deleting a propertypublic function up(): void { $this->migrator->delete('general.timezone'); }Checking a property if it existsThere might be times when you ...
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