在 Laravel 中,你可以使用 whereRaw 方法来执行原生的 SQL 查询,包含 FIND_IN_SET 函数。 代码语言:txt 复制 <?php namespace App\Http\Controllers; use Illuminate\Support\Facades\DB; use App\Models\Record; class RecordController extends Controller { public function getLatestRecord() { // 使用...
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...
Model::findOrFail($id);//查找主键为$id的数据,找不到抛出异常 Model::where('id',$id)->value();//获取id为$id的第一条数据的一个字段 Model::where('id',$id)->first();//获取id为$id的第一条数据 Model::where('id',$id)->get();//获取id为$id的数据集 Model::where('id',$id)-...
让我们快速看一下 Laravel 4 的以下Model类,我们刚刚从中扩展出来的(位于Vendor\Laravel\Framework\src\Illuminate\Database\Eloquent文件夹中): <?phpnamespaceIlluminate\Database\Eloquent;useDateTime;useArrayAccess;useCarbon\Carbon;useLogicException;useJsonSerializable;useIlluminate\Events\Dispatcher;useIlluminate\Dat...
Laravel's built-in validation rules each has an error message that is located in your application's resources/lang/en/validation.php file. Within this file, you will find a translation entry for each validation rule. You are free to change or modify these messages based on the needs of ...
No model events are fired when updating a set of models via the Eloquent query builder.Deleting An Existing ModelTo delete a model, simply call the delete method on the instance:1$user = User::find(1); 2 3$user->delete();Deleting An Existing Model By Key1User::destroy(1); 2 3...
You can also revert to a specific version ID of a model using:$revertedModel = Version::find( $version_id )->revert();Disable versioningIn some situations you might want to disable versioning a specific model completely for the current request....
Ardent is not just great for input validation, though - it will help you significantly reduce your Eloquent data model code. Ardent is particularly useful if you find yourself wearily writing very similar code time and again in multiple individual applications. ...
Model::setEventDispatcher($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); ...
The definition method returns the default set of attribute values that should be applied when creating a model using the factory. Configure the database We’ll be making use of an in-memory SQLite database for testing. This will make running our tests faster. Laravel already provides support ...