hasOne(CoursesCategoryLang::class,'cat_id')->where(['lang' => get_default_language()]); } public function lang_front(){ return $this->hasOne(CoursesCategoryLang::class,'cat_id')->where(['lang' => get_user_lang()]); } public function course(){ return $this->hasMany(Course::class,'categories_id'); } public function lang_all(){ return $this->hasMany(CoursesCategoryLang::class,'cat_id'); } }