CODEWITHSUNDEEP
djangodjango-templatesdjango-views
D.Njuguna
D.Njuguna

Reputation: 15

Passing data from a django view to a template

I would like to display data from a view after a calculation to a template. The View collects data from a Django form and then performs a simple calculation. However, the function does not redirect to the template.

 views.py

    from . import forms
    from django.http import HttpResponseRedirect
    from django.shortcuts import render,redirect

    def index(request):
        form = forms.InputForm()
        return render(request, 'index.html', {'form': form})


    def addition(a,b):
        c = a + b
        return c


    def input_form_Addition(request):
        if request.method == 'post':
           form = forms.InputForm(request.POST)
           if form.is_valid():
              input1 = form.cleaned_data['input1']
              input2 = form.cleaned_data['input2']
              total = addition(input1,input2)

              return render(request, 'output.html', {'total': total})
        else:
             form = forms.InputForm()

The template (output.html) looks like this: 

    <!DOCTYPE html>
    <html lang="en">
    <head>
       <meta charset="UTF-8">
       <title>Forms</title>

    </head>
    <body>

      <p>The Sum is {{ total }}</p>

    </body>
    </html>

My url routing is as follows:

    from django.urls import path
    from .views import index
    from simple_addition import views

      urlpatterns = [
           path('', views.index, name='index'),
           path('output/', views.input_form_Addition, name='output')
             ]

My Django form displays well and looks as follows.

forms.py from django import forms

    class InputForm(forms.Form):
       input1 = forms.FloatField()
       input2 = forms.FloatField()

And is displayed at:

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <meta charset="UTF-8">
      <title>Forms</title>

   </head>
   <body>
      <h2>Addition Page</h2>
      <p>Fill in two numbers to get their sum</p>

      <form method="post">
           {% csrf_token %}
           {{ form.as_p }}
      <input type="submit" value="Add" >
      </form>
    </body>
    </html>

Upvotes: 1

Views: 4812

Answers (2)

JulienS
JulienS

Reputation: 191

Can you put you form code ? (template and forms.py)

edit:

Ok i find your problem :

<form method="post">
   {% csrf_token %}
   {{ form.as_p }}
<input type="submit" value="Add" >

You miss a action for post form :

forms template :

<form method="post" action="/output/">
    {% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Add" >
</form>

urls.py

path('output/', views.input_form_Addition, name='output')

views.py

from . import forms
from django.http import HttpResponseRedirect
from django.shortcuts import render,redirect

def index(request):
    form = forms.InputForm()
    return render(request, 'index.html', {'form': form})


def addition(a,b):
    c = a + b
    return c


def input_form_Addition(request):
    form = forms.InputForm(request.POST)

    if form.is_valid():
        input1 = form.cleaned_data['input1']
        input2 = form.cleaned_data['input2']
        total = addition(input1, input2)

        return render(request, 'output.html', {'total': total})

Upvotes: 2

Jagjeet Singh
Jagjeet Singh

Reputation: 557

Just replace the line in functions input_form_Addition(request):

if request.method == 'post':

with

if request.method == 'POST':

Upvotes: 0

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