17 Laravel save one to many relationship 7 Laravel Eloquent - Save/Update Related One-To-Many Relationship Data 0 Laravel save or update many to many relationship with additional column 1 Laravel 5 saving and updating models with relationship 2 save many to many relation in Laravel elequen...
如果我们要对数据执行写操作,我们在最终保存数据前必须先手动转换其属性值。因为 EloquentModel 和 EloquentRelationshipPivot 类的 $casts 属性将通过同样的行为使 attach、sync、save 方法在 pivot model 中可用,但情况可能就不一样了。 自定义 Blade::if() 指令 Blade 模板中冗长重复的检查使得模板看起来很丑陋。
$role->users()->sync([]); // Delete relationship data $role->perms()->sync([]); // Delete relationship data $role->forceDelete(); // Now force delete will work regardless of whether the pivot table has cascading delete 1、创建角色/权限并进行分配 首先我们来创建Role和Permission: $owner...
最后整理下上面的调用链条,首先,我们生成定义的 MTest 是继承自 laravel/framework/src/Illuminate/Database/Eloquent/Model.php 这个抽象类的,注意,它是抽象类。然后,在这个抽象类中,使用了一个 laravel/framework/src/Illuminate/Database/Eloquent/Concerns/HasRelationships.php 特性,也就是 Trait 文件。在它的里面...
我们先从建立一个 Eloquent 模型开始。模型通常放在 app 目录下,但是您可以将它们放在任何地方,只要能通过 composer.json 自动载入。所有的 Eloquent 模型都继承于Illuminate\Database\Eloquent\Model。定义一个 Eloquent 模型 class User extends Model {} 你也可以通过 make:model 命令自动生成 Eloquent 模型: ...
$article->save(); 是不是还不如这样写: $category->article()->create($request->all()); 不要在 Blade 模板中执行查询并使用关联加载(N + 1 问题) 不好的地方在于,这对于100 个用户来说,等于执行 101 个 DB 查询: [@foreach](https://laravel-china.org/users/5651) (User::all() as $user...
When working with a many-to-many relationship, the save method accepts an array of additional intermediate table attributes as its second argument:App\User::find(1)->roles()->save($role, ['expires' => $expires]);The Create Method
$user->save(); 接下来,我们告诉 Eloquent 我们要将这个模型的内容保存到数据库中。 return"The test user has been saved to the database."; 最后,我们将这个字符串输出到浏览器,这样我们就知道一切都很好。 继续在浏览器中导航到http://myfirst.dev/test。您应该会看到确认消息,用户已保存到数据库中。
To create a new record in the database, simply create a new model instance, set attributes on the model, then call the save method: 为了在数据库中创建一条新的记录,简单创建一条新的model实例,设置属性,然后调用save方法来保存。 <?php
For instance, you may want to eager load a relationship so that the relationship data can be efficiently added to your search index. To accomplish this, define a makeSearchableUsing method on the corresponding model:use Illuminate\Database\Eloquent\Collection; /** * Modify the collection of ...