*/ protected $fillable = [ 'name', 'description', 'status', ]; /** * 获取知识库下的文档 * * @return \Illuminate\Database\Eloquent\Relations\HasMany */ public function documents() { return $this->hasMany(Document::class); } /** * 获取知识库关联的线站 * * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany */ public function stations() { return $this->belongsToMany(Station::class); } /** * 按用户线站过滤：全局 KB（无线站关联）+ 用户线站关联的 KB */ public function scopeAccessibleBy(Builder $query, User $user): Builder { if (!$user->hasStationRestriction()) { return $query; } $stationIds = $user->getAccessibleStationIds(); return $query->where(function (Builder $q) use ($stationIds) { $q->whereDoesntHave('stations') ->orWhereHas('stations', fn ($sq) => $sq->whereIn('stations.id', $stationIds)); }); } }