Laravel 在插入新记录时将数据添加到数据透视表
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Laravel adding data to pivot table while inserting new record
提问by Dipendra Gurung
I have three tables,
我有三张桌子，
roles(id, name);
users(id, email, password);
user_role(id, user_id, role_id);
In this scenario, I have users table is associated to roles table with many to many relation.
在这种情况下，我将用户表与具有多对多关系的角色表相关联。
I have two eloquent model as
我有两个雄辩的模型
Role
+users(){
belongsToMany('User')
}
User
+roles(){
belongsToMany('Role')
}
Now, the question is when I want to add a new user along with ids of roles that I would like to assign to users. How can I insert values to pivot table with Laravel best practices?
现在，问题是当我想添加一个新用户以及我想分配给用户的角色 ID 时。如何使用 Laravel 最佳实践将值插入到数据透视表中？
My existing code is:-
我现有的代码是：-
$roles = Input::get('roles'); // arrays of role ids
$user = new User();
$user->username = Input::get('username');
$user->password = Hash::make(Input::get('password'));
$user->save();
What to do next???
接下来做什么？？？
采纳答案by lukasgeiter
It's really all described in the documentation.
Anyway, here's how you do it:
无论如何，这是你的方法：
$user = new User();
$user->username = Input::get('username');
$user->password = Hash::make(Input::get('password'));
$user->save();
$user->roles()->attach($roles);
The important part is that you have to save the user before attaching the roles because otherwise the user doesn't have an id yet to be used in the pivot table.
重要的部分是您必须在附加角色之前保存用户，否则用户没有尚未在数据透视表中使用的 id。
