我使用symfony 1.4.15和doctrine。我有类别和子类别:
Category:
actAs:
Timestampable: ~
Sluggable:
unique: true
canUpdate: true
fields: [name]
builder: [myTools, StripText]
I18n:
fields: [name]
columns:
name: { type: string(255), notnull: true }
Subcategory:
actAs:
Timestampable: ~
Sluggable:
unique: true
canUpdate: true
fields: [name]
builder: [myTools, StripText]
I18n:
fields: [name]
columns:
category_id: { type: integer() }
name: { type: string(255), notnull: true }
relations:
Category: { onDelete: CASCADE,local: category_id , foreign: id }
我有产品。产品与类别和子类别有关系。
Product:
actAs:
Timestampable: ~
Sluggable:
unique: true
canUpdate: true
fields: [name]
builder: [myTools, StripText]
I18n:
fields: [name,description,shortbody,meta_keywords,meta_description]
columns:
partner_id: { type: integer() }
active: { type: boolean, default: 0, notnull: false }
name: { type: string(255), notnull: true }
shortbody: { type: string(500), notnull: true }
description: { type: string(), notnull: true }
reference: { type: string(100), notnull: true }
code: { type: string(100), notnull: true }
delivery_period: { type: string(100), notnull: true }
shipping_volume: { type: string(100), notnull: true }
weight: { type: string(100), notnull: true }
packing: { type: string(100), notnull: true }
package_dimensions: { type: string(100), notnull: true }
type_of_packaging: { type: string(100), notnull: true }
video_url: { type: string(100), notnull: false }
meta_keywords: { type: string(255) }
meta_description: { type: string(255) }
relations:
Subcategory: { local: product_id , foreign: subcategory_id, refClass: ProductSubcategory }
Category: { local: product_id , foreign: category_id, refClass: ProductCategory }
Partner: { local: partner_id , foreign: id, onDelete: CASCADE }
ProductSubcategory:
connection: doctrine
columns:
subcategory_id: { type: integer(), primary: true}
product_id: { type: integer(), primary: true }
relations:
Product: { onDelete: CASCADE,local: product_id, foreign: id }
Subcategory: { onDelete: CASCADE,local: subcategory_id, foreign: id }
ProductCategory:
connection: doctrine
columns:
category_id: { type: integer(), primary: true}
product_id: { type: integer(), primary: true }
relations:
Product: { onDelete: CASCADE,local: product_id, foreign: id }
Category: { onDelete: CASCADE,local: category_id, foreign: id }
所以我需要从子类别和类别中获取所有产品(一个查询) 我可以获得属于类别的所有产品:
$q = $this->createQuery('a')
->andWhere('a.active=1')
->leftJoin('a.ProductCategory o')
->andWhere('o.Category_id=?',$category_id)
->addORDERBY ('created_at DESC');
但我现在不知道如何从类别的所有子类别中获取所有产品....谢谢!
答案 0 :(得分:2)
1)你知道Doctrine中的NestedSet行为吗?这应该可以解决您对Subcategory
表的需求。它还允许“更深层次的类别”
2)在您当前的模型中,为什么 Product
与Subcategory
和Category
有关系? Category
可以由Subcategory
确定。
如果你修复其中一个,那么实现你的查询将会容易得多。