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Message from discussion How to build this query
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ozgur yilmaz  
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 More options Nov 9 2012, 3:38 am
From: ozgur yilmaz <yelb...@gmail.com>
Date: Fri, 9 Nov 2012 10:37:01 +0200
Local: Fri, Nov 9 2012 3:37 am
Subject: Re: How to build this query
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But Brand doesnt have a city field. Shop class has a city field.

2012/11/9 Jirka Vejrazka <jirka.vejra...@gmail.com>:

> paris_discounts = Discount.objects.filter(brand__city__name='Paris')  ?

>   Note that these are always *double* underscores and I had to make a guess
> that your City has an attribute "name".

>   HTH

>     Jirka

> On Fri, Nov 9, 2012 at 9:12 AM, ozgur yilmaz <yelb...@gmail.com> wrote:

>> Hi all,

>> I hope i can explain my query problem well. Think you have 3 classes:

>> class City( models.Model ):
>> ...
>> ...

>> class Brand( models.Model ):
>> ...
>> ...

>> class Shop( models.Model ):
>>    brand = models.ForeignKey( Brand )
>>    city = models.ForeignKey( City )
>> ...
>> ...

>> class Discount( models.Model ):
>>    brand = models.ForeignKey( Brand )
>> ...
>> ...

>> Think a Shop sell products of a single Brand. I have lots of Discount
>> records. But i'm interested in Discounts at Shops in Paris. Is there
>> any?

>> Can you help me?

>> Thanks,

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