I am trying to get a value from a queryset, but i keep getting this error that says
'bool' object is not subscriptable.
I have a queryset that looks like this
tax_rate_fee = TaxRate.objects.filter(country=cartorder.country).exists() and i am checking to see if a specific country exists in the Queryset, then i want to grab a value from the queryset and perform some operation.
This is my code
tax_rate_fee = TaxRate.objects.filter(country=cartorder.country).exists() if tax_rate_fee: cartorderitem.vat = 5 * tax_rate_fee['rate']
this is the tax rate fee model
class TaxRate(models.Model): country = models.CharField(max_length=200) rate = models.IntegerField(default=5, help_text="Numbers added here are in percentage (5 = 5%)") active = models.BooleanField(default=True)
The reason you are getting the error ‘bool’ object is not subscriptable is that the
exists() method on the queryset returns a boolean value indicating whether there are any records in the queryset that match the specified condition.
To retrieve the actual records from the queryset, you need to use the
get() method instead of
exists(). Also, once you have retrieved the records, you need to access the
rate attribute of each record, not the boolean value returned by
exists(). Here’s an example of how to modify your code:
tax_rate_fee = TaxRate.objects.filter(country=cartorder.country) if tax_rate_fee.exists(): cartorderitem.vat = 5 * tax_rate_fee.first().rate
In this code, we first filter the
TaxRate queryset to retrieve all records that match the specified
country. We then check if there are any records using
exists(). If there are, we retrieve the first record using
first() (assuming there is only one matching record), and access its
rate attribute to perform the calculation.
Note that if there are multiple matching records, you may want to use a different method to retrieve the appropriate record(s), such as