In this example, Order is the model with the hasMany relationship to items. The whereHas method is used to filter the orders based on a condition on the items relationship. The condition in this case is that the merchant_referral_percentage column should not be null. You can modify the con...
如果你的 pivot 表包含额外的属性,必须在定义关联关系时进行指定: return $this->belongsToMany('App\Role')->withPivot('column1', 'column2'); 如果你想要你的 pivot 表自动包含created_at 和 updated_at 时间戳,在关联关系定义时使用 withTimestamps 方法: return $this->belongsToMany('App\Role')->...
$query = Model::query()->with([ 'relationOne', 'relationTwo', ...])$query = $query->join(DB::raw("( select * from <models_table> where <some_condition>) as new_model"), 'new_model.id', '=', '<models_table>.id')$query = $query-...
对于预加载关系的情况,Model::with('relation')标记关系为预加载,在Model::get()获取数据时,检查到对关系的预加载标记,会对关系进行实例化,这个实例化的过程,会通过Relation::noConstraints屏蔽对关系数据的直接加载,在后续过程中,由通过Model::get()获取的模型列表数据,得到模型的ID列表,关系利用这个ID列表,统一查...
我有一个查询,在这个查询中,eagar加载了两个使用以下函数的模型: ModelA::with(['relationB', 'relationC.relationC.A'])->where(condition)->get(); 因此,ModelA有两个类似的关系: public function B(){ return $this->blongsTo(B::class);} public function C(){ return $this->blongsTo(C::c...
In the following example, the user relation will return an empty App\Models\User model if no user is attached to the Post model:/** * Get the author of the post. */ public function user() { return $this->belongsTo(User::class)->withDefault(); }...
$query = $modelClass::with(array( 'employeeRegionalCenter', 'employeeMembershipCenter', 'employeeMembershipCenter.membershipCenterLanguage' => function($languageQuery) { $languageQuery->where('language', App::getLocale()); }, 'employeeLanguage' => function($languageQuery) { $languageQuery->where...
<?php namespace App; use Illuminate\Database\Eloquent\Model; class User extends Model { /** * 取得與使用者有關的電話記錄。 */ public function phone() { return $this->hasOne('App\Phone'); } }Copy模型關聯名稱作為第一個參數傳入 hasOne 方法。關聯一旦被定義,我們可以使用 Eloquent 的動態...
<?php namespace App; use Illuminate\Database\Eloquent\Model; class User extends Model { /** * 获取与用户关联的电话号码 */ public function phone() { return $this->hasOne('App\Phone'); } }第一个传到 hasOne 方法里的参数是关联模型的类名。一旦定义好两者之间关联,我们就可以通过使用 ...
<?php namespace App; use Illuminate\Database\Eloquent\Model; class Role extends Model { /** * 拥有此角色的用户 */ public function users() { return $this->belongsToMany('App\User'); } }如你所见,除了引入模型为 App\User 外,其它与在 User 模型中定义的完全一样。由于我们重用了 belongsTo...