filter nested fields django code example

Example 1: django filter on related field

len(Collection.objects.filter(item__flag=True).distinct())

Example 2: filter field set in django formds

if request.method == "POST":
    modelform = AgregarProducto(request.POST, request.FILES, user=request.user)
    ...
else:
    modelform = AgregarProducto(user=request.user)

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Python Example

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