CODEWITHSUNDEEP
pythondjangodecimal
apardes
apardes

Reputation: 4380

Django validation error u"'' value must be a decimal number."

I am trying to get data from a form, the form is reproduced a number of times based on a list. One form for each item. The form consists of a checkbox and a textfield. If the checkbox is checked then I need the accompanying textfield data as well.

view:

        for item in request.POST.getlist('item_list'):
            item_id = int(item)
            item = Item.objects.get(id=item_id)
            item_name = item.name
            print item_name


            list = List(name = item_name, created_on = now, edited_on = now)

            for price in request.POST.getlist('price'):
                print price
                list_item.price = price
                list_item.save()
            #item.delete()

Its not shown above but now = timezone.now().

template:

<form action="" method="post">

    {% csrf_token %}

    {% for item in item_list %}
        <input type="checkbox" name="item" value="{{item.id}}">{{item.name}} <input type="text" name="price"><br>
    {% endfor %}

    <input type="submit" value="Add Items">

</form>

This returns a validationerror [u"'' value must be a decimal number."]. I can't figure out why it would be saying the numbers I'm inputting are not decimals. Thanks for your help.

Update:

The output when I put print request.POST.getlist('price') is [u'2.55', u'4.32', u'23.421', u'3.00', u'', u'']

Upvotes: 0

Views: 7766

Answers (1)

alecxe
alecxe

Reputation: 473813

There are empty prices in the list, skip them. Also, cast strings to decimals:

from decimal import Decimal

...

for price in request.POST.getlist('price'):
    if not price:
        continue
    list_item.price = Decimal(price)
    list_item.save()

Upvotes: 3

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