I have models with manytomany field:
class Brand(models.Model):
Company_Group = models.ManyToManyField(Company)
class Company(models.Model):
Pref_Company_Name_Flg = models.CharField(u'Preferred Name Flag',max_length=255, default="")
Pref_Company_Name = models.CharField(u'Preferred Name',max_length=255, default="")
I want to filter the id of brands in containing "company_instance"
brands = Brand.objects.all()
company_instance=company.objects.filter(id =company_id)
for brand in brands:
for i in Brand.Company_Group.through.objects.filter(Company_Group = brand):
print i.id
I have found the Similar problem as follows: click here
but Report errors :
Cannot resolve keyword 'Company_Group' into field. Choices are: brand, brand_id, company, company_id, id
then I try this way,also Report errors:
type object 'Brand' has no attribute 'Company_id'
Thanks andvance
You could just use the reverse relation from Company
instance like,
company = Company.objects.get(id=company_id)
company.brand_set.all() #this would return all Brand instances
#with company instance.