Django Form Class

Django
We will use Django form class to create the form and then use it. We will create one form.py file with this code.

form.py
from django import forms
   
# creating a form 
class my_form(forms.Form):
    id = forms.IntegerField(label='id here',required=False)
    name = forms.CharField(label='Your name',required=False)
Inside views.py I will import the form like this.

views.py
from .forms import my_form
Inside this views.py file we will have function suggest() like this
def suggest(request):
    str1=request.POST.get('name') # collect the name filed data 
    id=request.POST.get('id')     # collect the id field data 
    form = my_form(request.POST)  # the from 
    if form.is_valid():           
        return render(request,'suggest.html',{'form':form,'name':str1,'id':id})
    else:
        return render(request,'suggest.html',{'form':form})
Our file suggest.html file gets the form and the output ( both )
{% extends 'temp_basic.html' %}

{% block content %}
<form action = "" method = "post">
    {% csrf_token %}
    {{form}}
    <input type="submit" value=Submit>
</form>
<br>{{id}}<br>{{name}}
 {% endblock %}
On submission of form the output is here


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ChoiceField

We can add one dropdown listbox by using ChoiceField. We created one list and same is attached to ChoiceField by choices option.

forms.py
from django import forms
l1=[(1,'One'),(2,'Two'),(3,'Three')]
# creating a form 
class my_form(forms.Form):
    id = forms.IntegerField(label='id here',required=False)
    name = forms.CharField(label='Your name',required=False)
    cl=forms.ChoiceField(choices=l1,required=False)
Out of the three options available, we will keep the third choice or option default selected. ( watch initial={"cl":3} )

views.py
def my_dd(request):
    form = my_form(request.POST or None, initial={"cl": 3})
    if form.is_valid():
        cl=request.POST.get('cl')
        name=request.POST.get('name')
        id=request.POST.get('id')
        return render(request,'dd.html',{'form':form,'cl':cl,'id':id,'name':name})
    else:
        return render(request,'dd.html',{'form':form})
dd.html
{% extends 'temp_basic.html' %}

{% block content %}
<form action = "" method = "POST">
    {% csrf_token %}
    {{form}}
<input type="submit" value=Submit>
</form>
<br>id: {{id}}<br>name: {{name}}<br>cl:{{cl}}
 {% endblock %}

BooleanField

We can add Checkbox to the form by using BooleanField.

forms.py
from django import forms
l1=[(1,'One'),(2,'Two'),(3,'Three')]
# creating a form 
class my_form(forms.Form):
    id = forms.IntegerField(label='id',required=False)
    name = forms.CharField(label='Name',required=False)
    cl=forms.ChoiceField(choices=l1,required=False)
    ckb = forms.BooleanField(initial=True,required=False)
Inside views.py we will set the initial value of the checkbox to True or False. views.py
def my_dd(request):
    form = my_form(request.POST or None, initial={"cl": 3,'ckb':True})
    if form.is_valid():
        cl=request.POST.get('cl')
        name=request.POST.get('name')
        id=request.POST.get('id')
        ckb=request.POST.get('ckb')
        return render(request,'dd.html',{'form':form,'cl':cl,'id':id,'name':name,'ckb':ckb})
    else:
        return render(request,'dd.html',{'form':form})
Our final output is here

dd.html
{% extends 'temp_basic.html' %}

{% block content %}
<form action = "" method = "POST">
    {% csrf_token %}
    {{form}}
<input type="submit" value=Submit>
</form>
<br>id: {{id}}<br>name: {{name}}<br>cl:{{cl}}<br>ckb:{{ckb}}
 {% endblock %}

ChoiceField ( RadioSelect)

We will present Radio buttons in our form.

forms.py
r1=forms.ChoiceField(choices=l2,widget=forms.RadioSelect)
views.py
def my_dd(request):
    form = my_form(request.POST or None, initial={"cl": 3,'ckb':True,'r1':7})
    if form.is_valid():
        cl=request.POST.get('cl')
        name=request.POST.get('name')
        id=request.POST.get('id')
        ckb=request.POST.get('ckb')
        r1=request.POST.get('r1')
        return render(request,'dd.html',{'form':form,'cl':cl,'id':id,'name':name,'ckb':ckb,'r1':r1})
    else:
        return render(request,'dd.html',{'form':form})
dd.html
{% extends 'temp_basic.html' %}

{% block content %}
<form action = "" method = "POST">
    {% csrf_token %}
    {{form}}
<input type="submit" value=Submit>
</form>
<br>id: {{id}}<br>name: {{name}}<br>cl:{{cl}}<br>ckb:{{ckb}}<br>r1:{{r1}}
 {% endblock %}


Django Form
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