你可以过滤你的信息with()使用和键值语法。其次，可以在中使用子查询WhereIn()通过关闭。
Mariadb:https ://mariadb.com/kb/en/library/find_in_set/ Mysql:https : //dev.mysql.com/doc/refman/8.0/en/string-functions.html#function_find-in-set mysql在find_in_setMySQL的应该是这样的:return $this->hasMany(\App\Size::class, 'size_id')->orderByRaw(DB::raw("find_in_set(name,'...
Laravel hasManyThrough在嵌套时出现错误 在HasApiToken上生产时出现Laravel错误 Laravel 5.7在localhost上出现错误500 laravel 5.2无法在服务器上工作,出现403错误 Laravel api路由不工作,出现404错误 查询在laravel中返回错误的输出结果 检查日期的查询中出现错误laravel变量 ...
public function getPeople() { return $this->hasMany('App\Person','type_id'); }public function getCourses() { return $this->belpngsToMany('App\Course','PeopleType_Courses','people_type_id','course_id'); } 我的尝试:$peopleType = \App\PeopleType::FindOrFail(1); $courses = $peopl...
We can use this in our application like so: User::find($id)->vehicles(); Note: You could return this as anaccessorattribute by changing the function name tosetVehiclesAttribute(). This will allow you to access the vehicle field likeUser::find($id)->vehicle....
Also, this category has children specified which is also an array of categories; they will be processed in the same manner and saved as children of category foo.Category bar has no primary key specified, so it will treated as a new one, and be created....
确保你的数据库中有两个相关联的表,一个是“一”的一方,另一个是“多”的一方。例如,我们有一个“users”表和一个“posts”表,一个用户可以拥有多个帖子。 在对应的模型类中定义关联关系。在User模型中,使用hasMany方法定义与帖子的一对多关系: 代码语言:txt 复制public...
$flight= App\Flight::find(1); $flight->delete(); // 通过主键删除模型 App\Flight::destroy(1); App\Flight::destroy([1,2,3]); App\Flight::destroy(1,2,3); // 通过查询删除模型 $deletedRows= App\Flight::where('active',0)->delete(); ...
return $this->hasManyThrough(Post::class, User::class); } # 第一个参数:关联的模型类,第二个:中间借助的模型类 # 5. $country = Country::findOrFail(1); $posts = $country->posts; # countries(user_id) - user(country_id) - posts(user_id) ...
我们可以像这样定义关系模型:class Post extends Eloquent { public function comments() { return $this->hasMany('Comment'); } } 现在我们可以通过 动态属性 访问文章的评论:$comments = Post::find(1)->comments; 如果您需要添加进一步的约束检索哪些评论,我们可以调用 comments 函数连接链式条件:...