__iexact not working inside validator function.

[Diego Arturo Hernandez Fuentes]

I have my query into validation to find if exist a duplicate name in my model

    def validate_name(self, value):
        if not value:
            raise serializers.ValidationError('Proporciona un valor, por favor.')
        
        try:
            exist_name = FundingSource.objects.filter(name__iexact=value)                       # here is the error __icontains is NOT WORKING
            if len(exist_name) > 0:
                raise serializers.ValidationError('Este nombre ya fue usado, por favor proporciona otro valor.')  # I need display this message in my console to be sure that exists a duplicate
        except Exception as e:
            pass
        else:
            return value

I have in my model

Funding 1
Funding 2
Funding 3
Funding 4

Next, I tried to type funding 1 to disallow me to create that name, but, the queryset display me

<QuerySet []>

Then, create new one item in my table.

Funding 1
Funding 2
Funding 3
Funding 4
funding 1

So this is wrong, your iexact is bad,

so I need that Django developer team resolve this, now.

It's urgent, please. What is the best way to develop iexact or icontains.

Thanks

My django version is 2.1.5
Django rest framework version = 3.9.0

[Ryan Govostes]

You are raising your ValidationError inside a try ... catch block which catches the exception and then does nothing with it. This will prevent the ValidationError from escaping your validator.

Does this work?

def validate_name(self, value):
        if not value:
            raise serializers.ValidationError('Proporciona un valor, por favor.')
        
        exist_name = FundingSource.objects.filter(name__iexact=value)
        if len(exist_name) > 0:
            raise serializers.ValidationError('Este nombre ya fue usado, por favor proporciona otro valor.')

Please keep bug report titles simple.

[Mariusz Felisiak]

First of all please don't shout. Secondly __iexact works properly, an issue is in your own code. Tip from Ryan Govostes looks reasonable, but your code will not work properly on update. You should take into account instance etc. Nevertheless it is support issue so please use one of support channels.