user table and role table have many-to-many relationship, and the middle table is user_roles. many-to-many relationships are defined in the user model class public function relRole(){ return $this->belongsToMany( App Model Role , ...
I just started to learn the association model of laravel, and I was so confused that sometimes I really felt that it was not as convenient as writing sql directly. now there is a problem role tables admin_roles and admin_permissions tables have a man...
when using larave s gate for permission verification Admin_users (user table) Admin_roles (role table) Admin_permissions (permissions table) are many-to-many relationships first, register gate in App providers AuthServiceProvider $permissions=Admin...
version: laravel 5.7 when using the $appends attribute of the model modifier to add elements and using faker to generate false data, an error is reported: Unknown column sex_str Model related code: $factory->define( App Models User::cl...
class products (models.Model): MODE_CHOICES=(( week , ),( day , )) productname=models.CharField(max_length=30,unique=True) dutymode=models.CharField(max_length=30,choices=MODE_CHOICES,default= week ) class dutygroups (models.Model): pro...
what is the meaning of the "training algorithm " in the figure below? For example, the KNN algorithm mentioned below is not a function, something determined by routines? Why train? ...