Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.geeksforgeeks.org/python/regexfield-django-forms/ below:

RegexField - Django Forms - GeeksforGeeks

Last Updated : 12 Jul, 2025

RegexField in Django Forms is a string field, for small- to large-sized strings which one can match with a particular regular expression. It is used for taking selected text inputs from the user. The default widget for this input is

. It uses

and

if

and

are provided. Otherwise, all inputs are valid.

• regex :- A regular expression specified either as a string or a compiled regular expression object.
• max_length and min_length :- If provided, these arguments ensure that the string is at most or at least the given length.
• strip :- If True (default), the value will be stripped of leading and trailing whitespace.

field_name = forms.RegexField(**options)

Illustration of RegexField using an Example. Consider a project named

having an app named

.

Refer to the following articles to check how to create a project and an app in Django.

• How to Create a Basic Project using MVT in Django?
• How to Create an App in Django ?

Enter the following code into

file of

app.

from django import forms

# creating a form 
class GeeksForm(forms.Form):
    geeks_field = forms.RegexField(regex = "G.*s")

Add the geeks app to

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'geeks',
]

Now to render this form into a view we need a view and a URL mapped to that URL. Let's create a view first in

of geeks app,

from django.shortcuts import render
from .forms import GeeksForm

# Create your views here.
def home_view(request):
    context = {}
    context['form'] = GeeksForm()
    return render( request, "home.html", context)

Here we are importing that particular form from forms.py and creating an object of it in the view so that it can be rendered in a template. Now, to initiate a Django form you need to create home.html where one would be designing the stuff as they like. Let's create a form in

.

<form method = "POST">
    {% csrf_token %}
    {{ form }}
    <input type = "submit" value = "Submit">
</form>

Finally, a URL to map to this view in urls.py

from django.urls import path

# importing views from views..py
from .views import home_view

urlpatterns = [
    path('', home_view ),
]

Let's run the server and check what has actually happened, Run

Python manage.py runserver

Thus, an

is created by replacing "_" with " ".

RegexField is used for input of small sized selected text in the database. One can input the Name of particular entity, Email, etc. Till now we have discussed how to implement RegexField but how to use it in the view for performing the logical part. To perform some logic we would need to get the value entered into field into a python string instance. In views.py,

from django.shortcuts import render
from .forms import GeeksForm

# Create your views here.
def home_view(request):
    context ={}
    form = GeeksForm()
    context['form']= form
    if request.POST:
        temp = request.POST['geeks_field']
        print(temp)
    return render(request, "home.html", context)

Now let's try entering something else into the field.

Since it needs to be verified according to the regex provided which is input should start from 'G' and end with 's'. Let's enter "GeeksForGeeks" in the field

Now this data can be fetched using corresponding request dictionary. If method is GET, data would be available in

and if post,

correspondingly. In above example we have the value in temp which we can use for any purpose.

Core Field arguments are the arguments given to each field for applying some constraint or imparting a particular characteristic to a particular Field. For example, adding an argument

to RegexField will enable it to be left blank by the user. Each Field class constructor takes at least these arguments. Some Field classes take additional, field-specific arguments, but the following should always be accepted:

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4