Django - detect which form was submitted in a page
Clash Royale CLAN TAG#URR8PPPDjango - detect which form was submitted in a page
I have multiple form fields, and multiple submit buttons on a same page. I want to detect by which form field a POST request is triggered.
I am using CBV and my post() method has this:
CBV
post()
def post(self, request, **kwargs):
....
form1 = Form1(request.POST, instance=Model1.objects.filter(some_filtering...)
form2 = Form2(request.POST, instance=Model2.objects.filter(some_filtering...)
form3 = Form3(request.POST, instance=Model3.objects.filter(some_filtering...)
form4 = Form4(request.POST, instance=Model4.objects.filter(some_filtering...)
# this is the code I want to know
if POST request is triggered by form1...
# do something....
return super().post(request, **kwargs)
return super().post(request, **kwargs)
How can I detect which form triggered POST request?
2 Answers
2
you can use an hidden input in your form like this
<input name="formId" value="1" type="hidden"/>
... <!-- in second form --!>
<input name="formId" value="2" type="hidden"/>
then in your view check which form submitted
if request.POST.get("formId") == "1":
form1 = Form1(request.POST, instance=Model1.objects.filter(some_filtering...)
elif request.POST.get("formId") == "2":
form1 = Form2(request.POST, instance=Model1.objects.filter(some_filtering...)
...
I did it by using the input tag in HTML template instead of button tag for submitting the form
input
button
<form name="form-1" method="POST" action="{% url 'view_url_name'%}">
{% csrf_token %}
{{ form }}
<!--use input tag for submit button -->
<input class="btn mt-3 btn-primary" name="form-1-submit" value="Submit" type="submit"/>
</form>
Note: use the different name for each form submit input.
Now in your view, you can simply check for the name attribute of the button.
name
if 'form-1-submit' in request.POST:
form1 = Form1(request.POST, instance=Model1.objects.filter(some_filtering...)
...
# and so on
This implementation will also cover the scenario where you are
submitting the same form from different buttons to use that form for different
purposes.
form
form
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