$query->where('valid_type','=',3)->where(function($query){ $query->where('valid_end','<',1243545)->orWhere(function($query){ $query->where('valid_begin','>',1343454); }); }); }) })->first(); 原生写法: $model->whereRaw('name like ? or code like ?', [$keyword, $key...
Laravel 的模型可以通过 query 方法获取一个 Builder 实例 User::query() 这种写法在一些场景下是有用的,比如说自定义过滤器 $query = User::query(); if( $request->name ){ $query->where('name', $req...
那么这回,我们再来看一下 Model 中的方法,在底层是不是调用的是 查询构造器 。 在所有模型都要继承的 laravel/framework/src/Illuminate/Database/Eloquent/Model.php 类中,我们很快就能发现一个 query() 静态方法。一路向下追踪,你马上就会发现它最后会调用到一个 newBaseQueryBuilder() 方法。 代码语言:javascri...
* Get a new query builder for the model's table. * * @return \Illuminate\Database\Eloquent\Builder*/publicfunctionnewQuery() {$builder=$this->newQueryWithoutScopes();return$this->applyGlobalScopes($builder); } Model类的newQueryWithoutScopes方法: /** * Get a new query builder that doesn'...
useIlluminate\Database\Eloquent\Model; classTenantextendsModel { /** * Get the rent of a Tenant */ publicfunctionrent() { return$this->hasOne(Rent::class); } } 因为eloquent根据父模型的名称(本例中是Tenant)来确定外键关联,Rent模型假定存在一个tenant_id外键。
$post = Post::with(['comments' => function ($query) { $query->where('content', 'like', 'Laravel学院%') ->orderBy('created_at', 'desc'); }])->where('id', '<', 5)->get(); 底层执行的 SQL 语句如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 select * from `posts...
Generally, using a limit with offset is slower, and we should try to avoid using it.This articleexplains in detail the problem with using offset. As chunkById is using the id field which is an integer, and the query is using awhere clause, the query will be much faster. ...
Now, when you call the delete method on the model, the deleted_at column will be set to the current timestamp. When querying a model that uses soft deletes, the "deleted" models will not be included in query results.Forcing Soft Deleted Models Into ResultsTo force soft deleted models to...
By default, Laravel includes an App\Models\User Eloquent model in your app/Models directory. This model may be used with the default Eloquent authentication driver. If your application is not using Eloquent, you may use the database authentication provider which uses the Laravel query builder....
if (in_array($method, ['increment', 'decrement'])) { return $this->$method(...$parameters); } return $this->newQuery()->$method(...$parameters); } 去调用,这个方法最终以new Builder()而告终, public function newEloquentBuilder($query) ...