How do I get values from form fields in the django framework? I want to do this in views, not in templates...
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9 Answers
Using a form in a view pretty much explains it.
The standard pattern for processing a form in a view looks like this:
def contact(request):
if request.method == 'POST': # If the form has been submitted...
form = ContactForm(request.POST) # A form bound to the POST data
if form.is_valid(): # All validation rules pass
# Process the data in form.cleaned_data
# ...
print form.cleaned_data['my_form_field_name']
return HttpResponseRedirect('/thanks/') # Redirect after POST
else:
form = ContactForm() # An unbound form
return render_to_response('contact.html', {
'form': form,
})
2 Comments
Bob Stein
Example of that bound form:
class ContactForm(forms.Form): my_form_field_name = forms.CharField()
user3245268
Why can a template run {{ form.name_of_field }}, when the fields are actually in form.data or form.cleaned_data?
Take your pick:
def my_view(request):
if request.method == 'POST':
print request.POST.get('my_field')
form = MyForm(request.POST)
print form['my_field'].value()
print form.data['my_field']
if form.is_valid():
print form.cleaned_data['my_field']
print form.instance.my_field
form.save()
print form.instance.id # now this one can access id/pk
Note: the field is accessed as soon as it's available.
2 Comments
NullPumpkinException
This answer best summarises all the options - accessing raw POST data, unvalidated form fields and finally validated form fields.
ionalchemist
Maybe I've just been looking at my screen too long today, but it took me an hour to find this very simple solution
form['my_field'].value() for accessing form values on POST request. Some days :|You can do this after you validate your data.
if myform.is_valid():
data = myform.cleaned_data
field = data['field']
Also, read the django docs. They are perfect.
3 Comments
Robert Johnstone
what about b4 you clean your data?
freb
Before you clean your data all there is only request.POST that is stored with the form instance. Cleaning is what associates the POST data with the form fields. Before cleaning you would have to work with request.POST.
Fydo
Is it possible to get the formField's value if it's initial is set?
To retrieve data from form which send post request you can do it like this
def login_view(request):
if(request.POST):
login_data = request.POST.dict()
username = login_data.get("username")
password = login_data.get("password")
user_type = login_data.get("user_type")
print(user_type, username, password)
return HttpResponse("This is a post request")
else:
return render(request, "base.html")
Comments
I use django 1.7+ and python 2.7+, the solution above dose not work. And the input value in the form can be got use POST as below (use the same form above):
if form.is_valid():
data = request.POST.get('my_form_field_name')
print data
Hope this helps.
It is easy if you are using django version 3.1 and above
def login_view(request):
if(request.POST):
yourForm= YourForm(request.POST)
itemValue = yourForm['your_filed_name'].value()
# Check if you get the value
return HttpResponse(itemValue )
else:
return render(request, "base.html")
2 Comments
JackJack
If the method is "GET", is there a way to set the value of an attribute in yourForm['your_field_name'] 'min' to the value of a variable? I have a form that has a NumberInput widgets field, but I'm trying to set that in my views.py file. When I print the yourForm.fields['form_field'], I can only access the field as a class, where 'min' does not seem to be accessible. Here's what I see in the console: <class 'django.forms.fields.DecimalField'>
Joshua Johns
This is the best answer especially if you are using the default form sample from the documentation
Cleaned_data converts the submitted form into a dict where the keys represent the attribute name used in form and value is user submitted response. to access a particular value in the views we write:
formname.cleaned_data['fieldname']
Comments
Incase of django viewsets or APIView you can simply get the request.data and if you're sure the data being passed to the view is always form data then
- copy the data e.g
data = request.data.copy() - form data is returned with key values in lists so
data['key'][0]to get the first element of the list which is the value first value and most likely only value if they key only returns a single value of the key.
for example
class EquipmentView(APIView):
def post(self, request: Request):
data = request.data.copy()
author = data.get('author')[0]
Comments
The above solutions didn't work for me so I did it like this
class BlogActions(View):
def get(self, request, blog_id):
print(blog_id)
try:
blog = Blog.objects.get(id = blog_id)
except Blog.DoesNotExist:
pass
print(blog)
form = BlogForm(instance=blog)
context = {
'form' : form,
'title' : form['title'].value(),
'content' : form['content'].value()
}
return render(request, 'blogs/edit-blogs.html', context)
and on the templates I did this
<input name='title' class="w-full h-10 text-black" value="{{title}}" type="text">
<textarea name='content' class="w-full text-black h-56 resize-none" >{{content}}</textarea>
Same thing, but somehow the other one was not working
