How to define relation in laravel 5.3 eloquent model? - php

Question

I have tables in my database schema as follows,
Is it pivot table?
How can I define relationship in eloquent model?
class Role extends Model {
public $timestamps = false;
public function permissions() {
return $this->hasMany('App\Models\RolePermission', 'permissions_id');
}
}
Is this correct way to define relationship? Please help me to understand.
and
class RolePermission extends Model {
public $timestamps = false;
public function role() {
return $this->belongsTo('App\Models\Role', 'roles_id');
}
}

Answer 1

The problem is that you need to name your table permission_role to follow the design pragma.
Role Schema
Schema::create('roles', function(Blueprint $table){
$table->increments('id');
$table->string('name');
$table->timestamps();
});
Permission schema
Schema::create('permissions', function(Blueprint $table){
$table->increments('id');
$table->string('name');
$table->timestamps();
});
Then you just need the permission_role table:
Permission_Role schema
Schema::create('permission_role', function(Blueprint $table){
$table->increments('id');
$table->integer('permission_id')->unsigned();
$table->foreign('permission_id')->references('id')->on('permissions')->onDelete('cascade');
$table->integer('role_id')->unsigned();
$table->foreign('role_id')->references('id')->on('roles')->onDelete('cascade');
});
Then you just set up your models like this:
class Role {
public function permissions() {
return $this->hasMany(App\Permission::class);
}
}
Then of course your permission class
class Permission {
public function role() {
return $this->belongsToMany(App\Role::class);
}
}

Answer 2

its a many to many relationship bond together by a pivot table Permission_Role. there for each table belongsToMany not hasOne or hasMany
class Role {
public function permissions() {
return $this->belongsToMany(App\Permission::class);
}
}
class Permission {
public function role() {
return $this->belongsToMany(App\Role::class);
}
}