// The connector variable will determine which connector will be used for the // query condition. We will change it as we come across new boolean values // in the dynamic method strings, which could contain a number of these. $connector = 'and'; $index = 0; foreach ($segments as $...
你可在 Eloquent 模型类内中,把 Eloquent 关联定义成函数(functions)。因为,关联就像 Eloquent 模型一样,也可以作为强大的 查询语句构造器,定义关联为函数,因为其提供了强而有力的链式调用及查找功能。例如,我们可以在 posts 关联的链式调用中附加一个约束条件:...
一旦定义好两者之间关联,我们就可以通过使用 Eloquent 的动态属性来获取关联纪录。动态属性允许你访问关联函数,如同他们是定义在模型中的属性:$phone = User::find(1)->phone;Eloquent 会假设对应关联的外键名称是基于模型名称的。在这个例子里,它会自动假设 Phone 模型拥有 user_id 外键。如果你想要重写这个约定,则...
When invoking the user method, Eloquent will attempt to find a User model that has an id which matches the user_id column on the Phone model.Eloquent determines the foreign key name by examining the name of the relationship method and suffixing the method name with _id. So, in this case...
通过id获取记录并使用Laravel和eloquent查询与wherebetween的关系 mysql laravel eloquent laravel-8 eloquent-relationship 我试着从某个录音机上获取某个时间间隔内的所有测量值。如果我删除查询的“->wherebetween()”部分并查看结果,那么我将获得该记录器的所有传感器以及该传感器的所有相关测量值。但我不能在关系上...
此属性代表中间表的模型,它可以像其它的 Eloquent 模型一样被使用。默认情况下,pivot 对象只提供模型的键。如果你的 pivot 数据表包含了其它的属性,则可以在定义关联方法时指定那些字段:return $this->belongsToMany('App\Role')->withPivot('column1', 'column2'); ...
Eloquent determines the default foreign key name by examining the name of the relationship method and suffixing the method name with _id. However, if the foreign key on the Phone model is not user_id, you may pass a custom key name as the second argument to the belongsTo method:...
1class User extends Eloquent { 2 3 public function phone() 4 { 5 return $this->hasOne('Phone'); 6 } 7 8}The first argument passed to the hasOne method is the name of the related model. Once the relationship is defined, we may retrieve it using Eloquent's dynamic properties:...
To avoid issues when dealing with large datasets, we can retrieve a subset of results and process them as below. Option 1: Using chunk 1// when using eloquent 2$posts = Post::chunk(100, function($posts){ 3foreach ($posts as $post){ ...
If you need to manually join data with two or more conditions, you can learn how to add multiple conditions in Laravel Eloquent's join query using this post. While you don't need to use it if you're using data relationships, this can be helpful if you're not. In this exa...