class PostForm(forms.Form):
    title = forms.CharField(label='Titulo', max_length=100)
    slug = forms.SlugField(label='slug', max_length=120)
    content = MarkdownxFormField() # Estoy usando app de terceros :v
    img = forms.ImageField()
    series = forms.ModelMultipleChoiceField(queryset=List.objects.all())
    tags = forms.ModelMultipleChoiceField(queryset=Tag.objects.all())