Issue with Custom Admin Action - 'apply' Not Present in request.POST

Using Django The Admin
1

I am currently facing an issue with a custom action in the Django admin panel that I have implemented to update product prices based on a user-defined percentage. The action is triggered, but it seems that the form is not being submitted correctly, as the expected value 'apply' is not present in request.POST.

When I check the request data after submitting the form, I see the following output in my logs:

Request method: POST
Request POST data: <QueryDict: {‘csrfmiddlewaretoken’: […], ‘action’: [‘alterar_precos’], ‘select_across’: [‘0’], ‘index’: [‘0’], ‘_selected_action’: [‘83’]}>

As you can see, there is no 'apply' key in request.POST, which indicates that the form submission is not working as expected.

Has anyone encountered a similar problem? What could be preventing the 'apply' key from being included in request.POST during form submission?Thank you for your help!

class AtualizarPrecoForm(forms.Form):
    percentual = forms.DecimalField(
        max_digits=5,
        decimal_places=2,
        label="Percentual de alteração (%)",
        help_text="Insira um valor positivo para aumento ou negativo para redução."
    )

@admin.action(description="Alterar preço dos produtos selecionados")
def alterar_precos(modeladmin, request, queryset):
    """
    Ação personalizada para alterar o preço dos produtos com base em um percentual informado pelo usuário.
    """
    print("Ação alterar_precos chamada")
    print("Request method:", request.method)
    print("Request POST data:", request.POST)

    form = AtualizarPrecoForm()  # Inicializa o formulário aqui

    if request.method == 'POST':
        print("POST request detected")
        if 'apply' in request.POST:
            print("'apply' found in POST data")
            form = AtualizarPrecoForm(request.POST)
            if form.is_valid():
                print("form is valid")
                percentual = form.cleaned_data['percentual']
                fator = 1 + (percentual / 100)  # Fator de multiplicação
                # Atualiza os preços diretamente no banco de dados
                queryset.update(preco=F('preco') * fator)
                messages.success(request, f"Preços atualizados em {percentual}% para os produtos selecionados.")
                return None
            else:
                print("Form errors:", form.errors)
        else:
            print("'apply' not found in POST data")
    else:
        print("Request method is not POST")

    # Renderiza o formulário no admin
    return render(
        request,
        'admin/atualizar_precos.html',
        {
            'form': form,
            'queryset': queryset,
            'opts': modeladmin.model._meta,
            'action_checkbox_name': admin.helpers.ACTION_CHECKBOX_NAME,
        },
    )
2

I might have missed something obvious, but why do you think there should be an “apply” field in the submitted data?

I don’t see it anywhere in the docs for admin actions.

3

You are right, there should not be an “apply” field in the submitted data. The problem is that the form is not valid and I can’t see the cause.