Ruby on Rails Interview Questions and Answers — Helpers — Part 3

• How do you handle HTML and text formatting using Rails helper methods?
• What is the purpose of the content_tag and tag helper methods in Rails views?
• How can you generate image tags with helper methods in Rails?
• What is the purpose of date and time helpers in Rails, and how do you use them?
• How can you create custom helper methods to encapsulate common functionality in Rails views?

11. How do you handle HTML and text formatting using Rails helper methods?

Ruby on Rails provides various helper methods to handle HTML and text formatting efficiently and safely. Here are some key methods along with their usage:

sanitize and raw

sanitize: Cleans potentially harmful tags and attributes from HTML content.

<%= sanitize(@user_input) %>

raw: Marks a string as HTML safe, preventing it from being escaped. Use with caution.

<%= raw(@html_content) %>

content_tag

Generates HTML tags dynamically.

<%= content_tag(:div, "Hello, world!", class: "greeting") %>