Table of contents
1.
Introduction
2.
Web Frameworks
3.
CRUD in Web2py
4.
Captcha in Web2py
5.
Messages in Web2py
6.
Frequently Asked Questions
6.1.
Is web2py an MVC framework?
6.2.
What is the function of web2py?
6.3.
Which is better compared, Django or web2py?
6.4.
Does Python 3 support web2py?
6.5.
Which companies use web2py?
7.
Conclusion
Last Updated: Mar 27, 2024
Easy

Captcha and Messages in web2py

Author Shiva
0 upvote
Career growth poll
Do you think IIT Guwahati certified course can help you in your career?

Introduction

Web2py is written in Python and programmable in Python. Web2py is a free, open-source web framework for the agile development of secure database-driven online applications. As a full-stack framework, web2py has every element required to create entirely working web applications.

web2py introductory image

But why do we even need a web framework? Numerous programming languages are used to construct web apps, however starting from scratch may take some time. To achieve this, we need the web frameworks, which we will discuss later in article. A developer needs to be knowledgeable about that language because web frameworks are typically built on top of it. 

Web Frameworks

Developers frequently utilize web frameworks to build web apps quickly. A set of modules, libraries, and application programming interfaces (APIs) known as a web framework enables programmers to create online applications rapidly and effectively without having to worry about the intricate technical jargon and protocols used in web development.

CRUD in Web2py

crud image

On top of SQLFORM, the Create/Read/Update/Delete (CRUD) API is a test interface. Although it has been deprecated in favor of SQLFORM.grid() and SQLFORM.smartgrid(), several applications were created using it. Therefore, it is mentioned here. There are two ways to alter the way CRUD behaves: either by changing the characteristics of the CRUD object or by adding extra parameters to each of its methods. Captcha and messages are also crud attributes, as explained below.

Captcha in Web2py

captcha image

Challenge-response authentication is a sort of security technique used in CAPTCHA (Completely Automated Public Turing Test to Tell Computers and Humans Apart). By requesting that you pass a brief test to demonstrate that you are a real person and not a computer trying to access a password-protected account, CAPTCHA helps protect you from spam and password decryption.

You can add captcha to forms in your web2py application, using the same convention that is used for auth.settings:

crud.settings.create_captcha = None
crud.settings.update_captcha = None
crud.settings.captcha = None

Messages in Web2py

messages image

Crud.messages is a member of the gluon.storage class. Message that resembles gluon.storage Storage, but without the T operator, it automatically converts its values.

These are some customisable messages in Web2py:

crud.messages.submit_button = 'Submit'
/* For both create and update forms, it sets the text of the "submit" button. */


crud.messages.delete_label = 'Check to delete'
/* In "update" forms, it sets the label for the "delete" checkbox. */


crud.messages.record_created = 'Record Created'
/* When a record is successfully created, the flash message is set. */


crud.messages.record_updated = 'Record Updated'
/* when a record update is successful, it sets the flash message.  */


crud.messages.record_deleted = 'Record Deleted'
/* When a record is successfully deleted, a flash message is set.  */


crud.messages.update_log = 'Record %(id)s updated'
/* sets the log message on successful record update.  */


crud.messages.create_log = 'Record %(id)s created'
/* when a record is successfully created, it sets the log message.  */


crud.messages.read_log = 'Record %(id)s read'
/* when a record read request is successful, it sets the log message.  */


crud.messages.delete_log = 'Record %(id)s deleted'
/* when a record is successfully deleted, it sets the log message. */

Frequently Asked Questions

Is web2py an MVC framework?

The Ruby on Rails and Django frameworks informed the creation of web2py. Web2py, like similar frameworks, emphasises rapid development, prefers convention over configuration, and adheres to the model-view-controller (MVC) architectural paradigm.

What is the function of web2py?

Python dynamic web content programming is made possible by Web2py for web developers. Although a web developer can still create a form from scratch if necessary, Web2py is made to make laborious web development chores like creating web forms from scratch less onerous.

Which is better compared, Django or web2py?

Due to its smaller size, simpler learning curve, and lack of project-level configuration files, web2py differs from Django. Compared to PHP-based frameworks and Java-based frameworks, web2py has a significantly clearer syntax. This makes applications easier to comprehend, maintain, and create.

Does Python 3 support web2py?

Web2py functions on Python 2.7 and Python 3 with CPython (the C implementation) and PyPy (Python written in Python).

Which companies use web2py?

Web2py is used by a number of businesses, such as Reactable Systems, Daimler AG, LIBRES EN CRISTO, Pricetack, etc.

Conclusion

This article covers everything you need to know about Captcha and Messages in Web2py. Still have more questions; Here are some articles for rescue:

Refer to our guided paths on Coding Ninjas Studio to learn more about DSA, Competitive Programming, JavaScript, System Design, etc. Enroll in our courses and refer to the mock test and problems available. Take a look at the interview experiences and interview bundle for placement preparations.

Do upvote our blog to help other ninjas grow.

Happy Learning!

coding ninjas thank you image

Live masterclass