*@paramarray $columns *@return\Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Collection|null */publicfunctionfind($id,$columns= ['*']){if(is_array($id)) {return$this->findMany($id,$columns); }$this->query->where($this->model->getQualifiedKeyName(),'=',$id);return...
$model = static::query()->find($id, $columns); // ... return $model; }The lists MethodThe lists method now returns a Collection instance instead of a plain array for Eloquent queries. If you would like to convert the Collection into a plain array, use the all method:User...
find方法的实现是在\Illuminate\Database\Eloquent\Builder类里,如下:/** * Find a model by its primary key. * * @param mixed $id * @param array $columns * @return \Illuminate\Database\Eloquent\Model|\Illuminate\Database\Eloquent\Collection|null */publicfunctionfind($id,$columns=['*']){if...
is_array($columns) ? $columns : func_get_args() ); } 这个查询过程,可以分成三个步骤来执行: new static: 模型实例化,得到模型对象。 $model->newQuery(): 根据模型对象,获取查询构造器$query。 $query->get($columns): 根据查询构造器,取得模型数据集合。 Eloquent ORM的查询过程,就可以归纳成这三个过...
}If your global scope is adding columns to the select clause of the query, you should use the addSelect method instead of select. This will prevent the unintentional replacement of the query's existing select clause.Applying Global ScopesTo...
这在MySQL 中产生了SELECT* FROMusersLIMIT 10,5。skip($integer)方法将为查询设置一个偏移量,take($ integer)将限制输出为已设置为参数的自然数。 你还可以使用select()方法限制要获取的内容,并在 Fluent Query Builder 中轻松使用以下join语句: DB::table('users') ...
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上篇文章我们主要讲了Eloquent Model关于基础的CRUD方法的实现,Eloquent Model中除了基础的CRUD外还有一个很重要的部分叫模型关联,它通过面向对象的方式优雅地把数据表之间的关联关系抽象到了Eloquent Model中让应用依然能用Fluent Api的方式访问和设置主体数据的关联数据。使用模型关联给应用开发带来的收益我认为有以下几点...
use Okipa\LaravelTable\Abstracts\AbstractTableConfiguration; class UsersTable extends AbstractTableConfiguration { protected function table(): Table { return Table::make()->model(User::class); } protected function columns(): array { return [ Column::make('id'), Column::make('name')->format(ne...
However, despite the performance issues, EAV provides a very high flexibility. It let us have dynamic attributes that can be added / removed at any time without affecting database structure. It also helps when working with columns that will mainly storeNULLvalues. ...