TheInvoice_Detailhas a relation toItemsmodel which holds all item's data there in itsitemstable, which hasitem_id,name,category_id. TheItemmodel also has a relation toCategorymodel which has all categories data in itscategoriestable. Question: I want to select top five categories fromInvoice_...
I am trying to get the relationships that are associated with the productions table it has a job which is a one to many relationship, a part which is also a one to many and a materials that is a many to many. I then want to group the items in the productions table by the part_id...
Laravel Eloquent是Laravel框架中的一个ORM(对象关系映射)工具,用于简化数据库操作。它提供了一种优雅的方式来与数据库进行交互,包括查询、插入、更新和删除等操作。 根据每种类型选择最大的类型是一个常见的需求,可以通过使用Laravel Eloquent的join、max()和group by方法来实现。
Once the relationship has been defined, we can access the collection of comments by accessing the comments property. Remember, since Eloquent provides "dynamic properties", we can access relationship methods as if they were defined as properties on the model:...
A one-to-many relationship is used to define relationships where a single model is the parent to one or more child models. For example, a blog post may have an infinite number of comments. Like all other Eloquent relationships, one-to-many relationships are defined by defining a method on...
多对多关系(Many-to-Many Relationship):多个实体之间可以相互关联。 优势: 简化数据库操作:使用Eloquent关系可以轻松地定义和处理数据库之间的关系,无需手动编写复杂的SQL查询语句。 提高开发效率:通过使用Laravel Composer Package中的Eloquent关系,开发人员可以更快速地构建和维护数据库关系,减少了重复的代码编写。 灵活...
the relationship 和eloquent collection,主要都是用 SQL 语句做统计。因此它并不包括:先加载关联模型到内存中,然后使用 php 或 eloquent 的 count 方法进行统计,像 $user->posts->count() 或count($user->posts)。 Query Bilder这个应该很熟悉,使用 withCount($relationship),然后通过 {$relationship}_count 得到...
When using a custom keyed implicit binding as a nested route parameter, Laravel will automatically scope the query to retrieve the nested model by its parent using conventions to guess the relationship name on the parent. In this case, it will be assumed that the User model has a relationship...
<?phpnamespaceApp\Searchs\Modules\User;useluffyzhao\laravelTools\Searchs\Facades\SearchAbstract;classIndexSearchextendsSearchAbstract{protected$relationship= ['phone'=>'=','name'=>'like','date'=>'between'];publicfunctiongetNameAttribute($value){return$value.'%'; ...
* * @var array */ public function getJWTIdentifier() { return $this->getKey(); } public function getJWTCustomClaims() { return []; } /** * Relationship. * * @var string */ public function bikes() { return $this->hasMany(App\Bike); } } 设置授权保护现在,让我们对config.auth....