如何使用Tastypie通過相關模型屬性過濾API結果？

鑑於以下API定義，我需要能夠按產品別名過濾事件。如何使用Tastypie通過相關模型屬性過濾API結果？

鑑於一個事件屬於一個工作，而一個工作屬於一個產品，我不確定如何規範。

api.py：

class ProductResource(ModelResource): 

    class Meta: 
     queryset = Product.objects.all() 
     resource_name = 'product' 
     allowed_methods = ['get'] 
     excludes = ['created_at','updated_at'] 
     filtering = { 
      'alias': ALL 
     } 

class EnvironmentResource(ModelResource): 

    class Meta: 
     queryset = Environment.objects.all() 
     resource_name = 'environment' 
     allowed_methods = ['get'] 
     excludes = ['created_at','updated_at'] 

class JobResource(ModelResource): 

    product = fields.ForeignKey(ProductResource, 'product') 

    class Meta: 
     queryset = Job.objects.all() 
     resource_name = 'job' 
     allowed_methods = ['get'] 
     excludes = ['created_at','updated_at'] 

class EventResource(ModelResource): 

    environment = fields.ForeignKey(EnvironmentResource, 'environment',full=True) 
    job = fields.ForeignKey(JobResource, 'job',full=True) 

    class Meta: 
     queryset = Event.objects.all() 
     resource_name = 'event' 
     allowed_methods = ['get'] 
     excludes = ['created_at','updated_at'] 
     filtering = { 
      HOW DO I FILTER BY PRODUCT ALIAS???? 
     }

來源

2012-04-13 Danger Angell

鑑於以下過濾規格：

# In EventResource 
filtering = { 
    'job' : ALL_WITH_RELATIONS 
} 

# In JobResource 
filtering = { 
    'product' : ALL_WITH_RELATIONS 
} 

# In ProductResource 
filtering = { 
    'alias' : ALL 
}

你應該能夠做到：

/api/events/job__product__alias=something

來源

2012-04-16 10:36:40 kgr

我怎麼看，應該工作，但我對在JobResource的產品過濾得到一個語法錯誤。 – 2012-04-16 14:49:24

或許你可以與我們分享錯誤訊息？ – kgr 2012-04-16 15:11:46

'的SyntaxError在/ 無效的語法（api.py 34行）請求方法：\t GET 請求URL：\t http://127.0.0.1:8000/ Django的版本：\t 1.3.1 異常類型：\t語法錯誤異常值：\t 無效的語法（api.py，第34行）' – 2012-04-16 17:02:46

一個簡單的方法來實現這一目標是通過Advanced Filtering。這可以避免許多由ttypie ForeignKey字段生成的查詢。爲了安全起見，請記得在將數據添加到orm_filters之前手動驗證或清理過濾器輸入數據。

class EventResource(ModelResource): 

    class Meta: 
     queryset = Event.objects.all() 
     resource_name = 'event' 
     allowed_methods = ['get'] 

    def build_filters(self, filters=None): 

     if filters is None: 
      filters = {} 

     orm_filters = super(EventResource, self).build_filters(filters) 

     # Your filtering 
     if 'job__product__alias' in filters: 
      orm_filters['job__product__alias'] = filters.get(
       'job__product__alias') 

    return orm_filters

他們，你應該能夠得到過濾後的結果做：

/api/events/?job__product__alias=something

來源

2015-01-21 04:42:59 ptronico

如何使用Tastypie通過相關模型屬性過濾API結果？

回答

相關問題