Django - initial checked CheckboxInput

问题

I want my CheckboxInput was checked by default :

My models :

class Sub(models.Model):
    user = models.OneToOneField(User)
    batata = models.BooleanField(default=False)

class presentationForm(forms.ModelForm):
    class Meta : 
        model = Sub
    widgets = {
        'batata': forms.CheckboxInput(attrs={'id':'batata'}),
    }
    def __init__(self, *args, **kwargs):
        self.valbata = kwargs.pop("arg_bata")
        super(presentationForm, self).__init__(*args, **kwargs)
        self.fields['batata'].initial = True

My view :

def theview(request):
    form = presentationForm(arg_bata="Azerty")
    return render(request,"le_site/page-batata.html",locals())

My template :

<div id="mod">
    {% load bootstrap %}
    <form method="POST" id="formModificationFic">
            {% csrf_token %}
            {{ form.batata|bootstrap }}
     ...
            <div class="col-md-offset-4 col-md-3">
                <input type="submit" id="le_bouton" value="Confirmer">
            </div>
      </form>
</div>

My JS :

function envoie_post(){
   var batataRep = document.getElementById("batata").checked;
   alert("batataRep : "+batataRep);  
   $.post("http://localhost:8000/page-batata",  "batataRep":batataRep});
}

$(document).ready(function() {
        $("#formModificationFic").submit(function() {
        envoie_post();
        return false;
    });
});

But in my page, the checbkoxInput "batata" isn't checked... And I think the JS hasn't effects

回答1:

Add 'checked' attribute to your Checkbox Input field widget in presentationForm. So that your code becomes :

class presentationForm(forms.ModelForm):

class Meta : 
    model = Sub
    widgets = {
    'batata': forms.CheckboxInput(attrs={'id':'batata', 'checked' : ''}),
}
def __init__(self, *args, **kwargs):
    self.valbata = kwargs.pop("arg_bata")
    super(presentationForm, self).__init__(*args, **kwargs)
    self.fields['batata'].initial = True

来源：https://stackoverflow.com/questions/31099252/django-initial-checked-checkboxinput