All geek questions in one place

Django form not showing

I have the following view in forms.py:

class ContractForm(forms.Form):
    title = forms.CharField()
    start_date = forms.DateField()
    end_date = forms.DateField()
    description = forms.CharField(widget=forms.Textarea)
    client = forms.ModelChoiceField(queryset=Client.objects.all())

    def __init__(self, user, *args, **kwargs):
        super(ContractForm, self).__init__(*args, **kwargs)
        self.fields['client'] = forms.ModelChoiceField(queryset=Client.objects.filter(user=user))
        clients = Client.objects.filter(user = user)
        for client in clients:
            print client

And, in my opinion, the method is as follows:

def addContract(request):
    if not request.user.is_authenticated():
        return HttpResponseRedirect('/contractManagement/login/?next=%s' % request.path)
else:   
    if request.method == 'POST':
        contractForm = ContractForm(request.POST)
        title = request.POST['title']
        start_date = request.POST['start_date']
        end_date = request.POST['end_date']
        description = request.POST['description']
        client = request.POST['client']
        user = request.user
        contract = Contract(title,start_date,end_date,description,client,user)
        contract.save()
        return HttpResponseRedirect('../../accounts/profile/')
    else:
        user = request.user
        print user.username
        contractForm = ContractForm(user)
        return render_to_response('newcontract.html', {'contractForm': contractForm})

But the form will not be displayed in the browser. All that is displayed is the submit button. My HTML looks like this:

<html>
<head>
</head>
<body>
{% if contractForm.errors %}
<p style="color: red;">
    Please correct the error{{ contractForm.errors|pluralize }} below.
</p>
{% endif %}
<form method="POST" action="">    
    <table>
        {{ contractForm.as_table }}
    </table> 
    <input type="submit" value="Submit" />
</form> 
 </body>
</html>

So why the form will not be displayed?

EDIT I got rid of the user field of the client requiring the user, and it still will not be displayed. I thought this might help. Thus, a form can use this class:

class ContractForm(forms.Form):
    title = forms.CharField()
    start_date = forms.DateField()
    end_date = forms.DateField()
    description = forms.CharField(widget=forms.Textarea)
    client = forms.ModelChoiceField(queryset=Client.objects.all())
+3
source share
3 answers

Change the name of the forms in the view. Now it looks like

form = ContractForm(user=request.user)

And it works.

0
source

The argument querysetfor forms.ModelChoiceFieldmust be a set of queries. It should read:

self.fields['client'] = forms.ModelChoiceField(queryset=Client.objects.filter(user=user))

, __init__():

class ContractForm(forms.Form):
    ...
    client = forms.ModelChoiceField(queryset=Client.objects.all())
+2

, QuerySet, .

-, GET, contractForm = ContractForm(user). ( POST) - - __init__.

-, __init__ user: . , -.

, , init :

def __init__(self, *args, **kwargs):
    user = kwargs.pop('user')
    super(ContractForm, self).__init__(*args, **kwargs)
    self.fields['client'].queryset=Client.objects.filter(user=user)

:

contractForm = ContractForm(user=request.user)

Thirdly, although this is not related to the problem that you are posting, you will never see any errors in this form, because you do not check it in the POST section - you need to check if contractForm.is_valid(), and if it does not fail to the end render_to_response(which should not be limited to one level).

In addition, you ignore the whole essence of the form, setting your model directly from request.POST. You must use the content contractForm.cleaned_datato create an instance of the Contract.

Finally, you should consider whether ModelForm will better suit your needs.

+2
source

Source: https://habr.com/ru/post/1791896/

More articles:


All Articles