而另外一个 map() 函数就不用多说了,之前我们说过,Laravel 的 PDO 在默认查询构造器的情况下,走的是 PDO::FETCH_OBJ ,获得的集合结果中的每个数据都是一个 stdClass 对象,而在 Model 下,走的则是 PDO::FETCH_CLASS ,也就是会和我们指定的模型类关联上,获得的结果都是一个 App\Models\MTest Object 对象...
1 2 3 4 5 $data = ModelA::find($id, ['column1', 'column2']); $data = ModelA::first(['column1', 'column2']); $data = ModelA::where(['column1', '=', 'value'])->get(['column1', 'column2']);在不同的场景下三者中选符合需要的使用即可。
所以使用Laravel的ORM方法查询返回指定的字段可通过如下三种方法来实现 $data = ModelA::find($id, ['column1', 'column2']); $data = ModelA::first(['column1', 'column2']); $data = ModelA::where(['column1', '=', 'value'])->get(['column1', 'column2']); 1. 2. 3. 4. 5. ...
php artisan make:migration add_slug_column_to_events_table --table=events 执行成功返回: 代码语言:txt AI代码解释 Created Migration: 2020_10_04_225240_add_slug_column_to_events_table 然后手动实现迁移文件的 up 方法: 代码语言:txt AI代码解释 public function up() { Schema::table('events', funct...
This model may be used with the default Eloquent authentication driver. If your application is not using Eloquent, you may use the database authentication provider which uses the Laravel query builder.When building the database schema for the App\Models\User model, make sure the password column ...
This model may be used with the default Eloquent authentication driver. If your application is not using Eloquent, you may use the database authentication provider which uses the Laravel query builder.When building the database schema for the App\Models\User model, make sure the password column ...
:subject—— 表示performedOn的模型,可以使用点(:subject.column)表示模型属性 :causer—— 表示causedBy的模型,可以使用点(:causer.column)表示模型属性 :properties—— 表示withProperties自定义的属性,可以使用点(:properties.column)表示对应的模型。 添加一个回复: ...
Now, when you call the delete method on the model, the deleted_at column will be set to the current timestamp. When querying a model that uses soft deletes, the "deleted" models will not be included in query results.Forcing Soft Deleted Models Into ResultsTo force soft deleted models to...
('created_at', '=', '11:20:45') whereColumn('first_name', 'last_name') // 判断两个字段 相等 whereColumn('updated_at', '>', 'created_at') whereColumn([ ['first_name', '=', 'last_name'], ['updated_at', '>', 'created_at'] ]) where('finalized', 1)->exists(); //...
Model::setEventDispatcher($this->app['events']); 二、 楔子 - Eloquent ORM的使用 我们先回顾一下官方文档中,关于ORM的用法: // 1. 静态调用 User::all(); User::find(1); User::where(); // 2. 对象调用 $flight = App\Flight::find(1); ...