$employee=Employee::find(1)->roles()->orderBy('name')->where('name','admin')->get(); 像所有其他方法一样,我们可以覆盖belongsToMany方法的外键和本地键。 要定义belongsToMany的逆向关联,我们只需使用同样的方法,但现在是在子方法上,以父方法作为参数。 <?php namespaceApp\Models; useIlluminate\Da...
laravel支持多种模型之间的relation,对应着模型间的one2one, one2many,many2many,hasManyThrough,Polymorphic, many2many polymorphic关系。 心法 1.所有relation都由model class上的方法来定义; 2. relationship和model本身都是以query builder作为基类的,因此对relation的操作也可以使用类似query builder的方法,比如:可以...
When working with a many-to-many relationship, the save method accepts an array of additional intermediate table attributes as its second argument:App\User::find(1)->roles()->save($role, ['expires' => $expires]);Updating A Record On A Pivot TableIf you need to update an existing row ...
Laravel查询orderBy嵌套关系仅使用with()方法不能按嵌套关系排序，需要先连接关系，因此代码应为：
The withTrashed method may also be used on a relationship query:1$flight->history()->withTrashed()->get();Retrieving Only Soft Deleted ModelsThe onlyTrashed method will retrieve only soft deleted models:1$flights = App\Flight::onlyTrashed() 2 ->where('airline_id', 1) 3 ->get();...
The withTrashed method may also be used on a relationship query:1$flight->history()->withTrashed()->get();Retrieving Only Soft Deleted ModelsThe onlyTrashed method will retrieve only soft deleted models:1$flights = App\Flight::onlyTrashed() 2 ->where('airline_id', 1) 3 ->get();...
本文翻译改编自Laravel 的十八个最佳实践 这篇文章并不是什么由 Laravel 改编的 SOLID 原则、模式等。 只是为了让你注意你在现实生活的 Laravel 项目中最常忽略的内容。 单一责任原则 一个类和一个方法应该只有一个职责。 错误的做法: publicfunction getFullNameAttribute() ...
See below: The sizes (headers) will be created by the user, so they are dynamic and therefore might be in different order, which makes it a bit harder for me to match the header with the row. Another point is, even though there is no color/size associated with the product, I still...
many users may have the role of "Admin". Three database tables are needed for this relationship: users,roles, and role_user. The role_user table is derived from the alphabetical order of the related model names, and should have ...
The withTrashed method may also be used on arelationshipquery: $flight->history()->withTrashed()->get(); Retrieving Only Soft Deleted Models The onlyTrashed method will retrieveonlysoft deleted models: $flights = App\Flight::onlyTrashed() ...