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 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...
However, you may force soft deleted models to appear in a result set using the withTrashed method on the query:1$flights = App\Flight::withTrashed() 2 ->where('account_id', 1) 3 ->get();The withTrashed method may also be used on a relationship query:...
} 注意在这里我们使用了laravel5提供的route model binding特性,我们在控制器中使用Task类typehinting了task参数,而该task参数,而该task参数和routes.php中定义的wildcast路由Route::get('tasks/{task}','xxx'}定义的task相匹配,因此laravel在调用我们的控制器时自动注入Task模型(以id为索引)。这个功能后续再做进一步...
A key design decision had to be made here. The fact that ideas are publicly available and can be tested by multiple users means that if this many-to-many relationship didn’t exist, it would be impossible to tell which user had entered a value against the metric. ...
Of course, you may also define the inverse of the relationship on the Role model: AI检测代码解析 class Role extends Eloquent { public function users() { return $this->belongsToMany('User'); } } 1. 2. 3. 4. 5. ...
Like other relations, embedsMany assumes the local key of the relationship based on the model name. You can override the default local key by passing a second argument to the embedsMany method: return $this->embedsMany('Book', 'local_key'); ...
So I expected both users to have 5 loaded books, given the relationship defined above. What have I tried? // FAIL 1: Using the previously defined `books()` relationship, same as above \App\User::with('onlyFiveBooks')->get(); // FAIL 2: Still only loads 5 books to the last of ...
RelationshipFilter: Requires string $label, string $relationship, array $options and bool $multiple = true arguments on instantiation Filters the table based on whether the value of the selected options (or single option if multiple mode is disabled) is found in the given relationship NullFilter...
Added to customizing the name of the joining table, you can also customize the column names of the keys on the table by passing additional arguments to the belongsToMany method. The third argument will be the foreign key name of the model on which you are defining the relationship, while ...