Формы Django

Using Django Forms

To use Django Forms, one needs to have a project and an app working in it. After you start an app you can create form in app/forms.py. Before starting to use a form let’s check how to start a project and implement Django Forms.

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 ?

Creating a Django Form

Creating a form in Django is completely similar to creating a model, one needs to specify what fields would exist in the form and of what type. For example, to input, a registration form one might need First Name (CharField), Roll Number (IntegerField) and so on.
Syntax

from django import forms
        
class FormName(models.Model):
         # each field would be mapped as an input field in HTML
        field_name = models.Field(**options)

To create a form, in geeks/forms.py Enter the code,

To know more about how to create a Form using Django forms, visit How to create a form using Django Forms ?.

Render Django Forms

Django form fields have several built-in methods to ease the work of the developer but sometimes one needs to implement things manually for customizing User Interface(UI). A form comes with 3 in-built methods that can be used to render Django form fields.

• {{ form.as_table }} will render them as table cells wrapped in <tr> tags
• {{ form.as_p }} will render them wrapped in <p> tags
• {{ form.as_ul }} will render them wrapped in <li> tags

To render this form into a view, move to views.py and create a home_view as below.

In view one needs to just create an instance of the form class created above in forms.py.
Now let’s edit templates > home.html

Now, visit http://localhost:8000/

.
To check how to use the data rendered by Django Forms visit Render Django Form Fields

Create Django Form from Models

Django ModelForm is a class that is used to directly convert a model into a Django form. If you’re building a database-driven app, chances are you’ll have forms that map closely to Django models. Now when we have our project ready, create a model in geeks/models.py,

To create a form directly for this model, dive into geeks/forms.py and Enter following code,

Now visit http://127.0.0.1:8000/,

More on Django Forms

• Render HTML Forms (GET & POST) in Django
• {{ form.as_p }} – Render Django Forms as paragraph
• {{ form.as_table }} – Render Django Forms as table
• {{ form.as_ul }} – Render Django Forms as list
• Django form field custom widgets
• Python | Form validation using django
• Django ModelForm – Create form from Models
• Render Django Form Fields Manually
• Django Formsets
• Django ModelFormSets

Basic form data types and fields list

The most important part of a form and the only required part is the list of fields it defines. Fields are specified by class attributes. Here is a list of all Form Field types used in Django.

Core Field Arguments

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 required = False to CharField 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:

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