Certainly! Here's a detailed answer to the interview question "What is Dynamic Finders?" in the context of Ruby on Rails:
What is Dynamic Finders in Ruby on Rails?
Dynamic finders in Ruby on Rails are a feature that allows you to quickly and easily query your database using methods that are dynamically generated based on the attributes of your models. These methods are created on-the-fly by Rails, allowing you to write concise and readable code without having to manually define each query method.
How Dynamic Finders Work
Dynamic finders are based on the naming convention of the method you call. Rails interprets the method name and translates it into a corresponding SQL query. For example, if you have a User model with attributes first_name and last_name, you can use dynamic finders to search for users based on these attributes.
Here are some examples:
User.find_by_first_name("John") - Finds the first user with the first name "John".
User.find_by_last_name("Doe") - Finds the first user with the last name "Doe".
User.find_by_first_name_and_last_name("John", "Doe") - Finds the first user with both the first name "John" and the last name "Doe".
Benefits of Dynamic Finders
Conciseness: Dynamic finders allow you to write less code. Instead of writing custom SQL queries or using more verbose ActiveRecord methods, you can use...
