Once the action has been attached to the field, you will be able to select the action and execute it from the relationship index on the parent resource’s detail page.To learn more about Nova actions, check out the complete action documentation....
{{ $model->relationship?->field) }}使用withCount () 来统计子关联记录数如果你有 hasMany() 的关联,并且你想统计子关联记录的条数,不要写一个特殊的查询。例如,如果你的用户模型上有帖子和评论,使用 withCount()。public function index() { $users = User::withCount(['posts', 'comments'])->get(...
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...
You may also come across situations where you want to update an existing model or create a new model if none exists. Laravel provides an updateOrCreate method to do this in one step. Like the firstOrCreate method, updateOrCreate persists the model, so there's no need to call save():...
You may also come across situations where you want to update an existing model or create a new model if none exists. Laravel provides an updateOrCreate method to do this in one step. Like the firstOrCreate method, updateOrCreate persists the model, so there's no need to call save():...
You may "revoke" tokens by deleting them from your database using thetokensrelationship that is provided by theHasApiTokenstrait: // Revoke all tokens... $user->tokens()->delete(); // Revoke the user's current token... $request->user()->currentAccessToken()->delete(); ...
You may also come across situations where you want to update an existing model or create a new model if none exists. Laravel provides an updateOrCreate method to do this in one step. Like the firstOrCreate method, updateOrCreate persists the model, so there's no need to call save():...
You may also come across situations where you want to update an existing model or create a new model if none exists. Laravel provides an updateOrCreate method to do this in one step. Like the firstOrCreate method, updateOrCreate persists the model, so there's no need to call save():...
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. However, this behavior was only previously supported by Laravel when a custo...
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的...