Question

I have a model in my project which is rendered as an inline of an other model. The inline model has a property (not a field) that I need in my template for a particular check, but I don't want it shown as a field. I can't find a way to make such field rendered as hidden, so that the entire <TD> disappears.

I've both tried with Meta class:

class MyFormset(forms.models.BaseInlineFormSet):

    class Meta:
        widgets = {
            'to_be_hidden_property': forms.HiddenField,
        }

and with add_fields method:

class MyFormset(forms.models.BaseInlineFormSet):

    def add_fields(self, form, index):
        super(MyFormset, self).add_fields(form, index)
        form.fields["to_be_hidden_property"].widget = forms.HiddenInput()

but both failed. First attempt simply gets ignored, while second one leads to a KeyError exception (field doesn't exist).

I'm open to suggestions, as I'd really hate to have to hide it via JS.

EDIT (adding admin.TabularInline code):

class AssegnamentoCommessaConsulenzaInline(admin.TabularInline):

    formset = AssegnamentoCommessaConsulenzaFormset
    model = AssegnamentoCommessaConsulenza
    template = 'admin/commessa/edit_inline/assegnamentocommessaconsulenza_tabular.html'
    extra = 0

    readonly_fields = (
        'get_fase',
        'get_configuration_link_inline',
        'numero_erogazioni_effettuate',  # Field to hide
    )

    class Media:
        js = ('useless things', )
        css = {'all': ('even less useful things', )}

EDIT (to explain what I've tried after @Alasdair's suggestion):

from django.forms.models import inlineformset_factory

class MyFormAbstract(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        super(MyFormAbstract, self).__init__(*args, **kwargs)
        self.fields['to_be_hidden_property'] = forms.CharField(
            widget=forms.HiddenInput(),
            initial=self.instance.to_be_hidden_property
        )

    class Meta:
        model = MyModel
        fields = '__all__'

MyFormset = inlineformset_factory(
    MyMainModel,
    MyInlineModel,
    form=MyFormAbstract
)

This whole thing seems to get silently ignored. There are no errors, but the property is still there.

Answer 1

您可能会发现customize the model form更容易，而不是继承BaseInlineFormSet。

class MyForm(forms.ModelForm):
    class Meta:
        model = MyModel

    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        self.fields['property_field'] = forms.CharField(widget=forms.HiddenInput(), initial=self.instance.property_field)

MyInlineFormset = inlineformset_factory(MyMainModel, MyModel, form=MyForm)

请注意，所有这一切都是将隐藏字段添加到表单中，您必须添加所需的任何其他处理。

Hidden property in Django 1.7 admin BaseInlineFormSet

1 个答案: