检索嵌套链接数据，Cakephp（2.1.0）

Question

我有以下数据库关系：

Building hasMany Shape

Appartment hasOne Shape

Building hasMany Appartment

Shape belongsTo Building & Appartment

现在，在Shape模型中，我想要检索属于某个建筑物的所有形状。这包括属于该特定建筑物的公寓的形状。

E.g。

Building 'X'

There are 4 shapes directly linked to building X via the belongsTo Building relation. Shape->Building

And there are 2 shapes directly linked to 2 appartments via the belongsTo Appartment relation. These 2 appartments again are directly linked to Building X via the belongsTo Building relation. Thus these 2 shapes are indirectly linked to building X. Shape->Appartment->Building

我似乎无法理解这一点，非常感谢帮助。

Answer 1

使用CakePHP's Containable Behavior。

Answer 2

在您的查找中提升recursive value，尝试一下。

Answer 3

您可能还想重新考虑使用shape作为自己的表。

例如，如果您的表只有一个正确，并且如下所示：

shapes
id     int
shape  varchar 50

而是这样做：

buildings
id    int
bulding_number  int
shape varchar 50
...
appartments
id    int
appartment_number  int
shape varchar 50
...

在建筑物和公寓桌上都可以更容易地选择形状。您的数据库将更简单，更快速，并且编程可能更容易。

但是，如果您想要捕捉的其他形状属性就在前方。