Ruby on Rails Tutorial #2: Master Active Record Models Like a Pro! 🚀

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Technical Rajni

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Published on August 15, 2024 12:00:00 AM ● Video Link: https://www.youtube.com/watch?v=LiRxg6AtrgA

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Creating Active Record Models

Creating Active Record models in Ruby on Rails involves generating a model file, which represents a table in your database, and then running a migration to create that table. Active Record is the ORM (Object-Relational Mapping) layer in Rails, which means it allows you to interact with your database using Ruby objects.

Generate an Active Record Model

rails generate model ModelName field1:type field2:type

rails generate model Product name:string price:decimal stock_quantity:integer

This command will generate:

A migration file in the db/migrate/ directory, which will create the corresponding table in the database.
A model file in the app/models/ directory.
A test file in the test/models/ directory (if using the default testing framework).


Run the Migration
After generating the model, you need to run the migration to create the database table:
rails db:migrate
This command will apply the migration and create the products table with the specified columns in your database.

3. The Generated Model File

The generated model file (e.g., app/models/product.rb) will look like this:
Welcome to Ruby on Rails Tutorial #2: Master Active Record Models! 🎉 In this tutorial, we take a deep dive into the heart of Rails development—Active Record Models. Whether you're just starting out or looking to sharpen your skills, this guide will walk you through the process of creating powerful and efficient models in Rails. 🚀

We'll cover everything from the basics of model creation to advanced features like validations, associations, and callbacks. 💎 By the end of this tutorial, you'll have a solid understanding of how to build and manage your database records effectively, making your Rails applications more dynamic and responsive. 💻

Don’t miss out on learning essential techniques that will set you apart in the world of web development. Subscribe and hit the bell icon for more Rails content! 🔔 #RubyOnRails #ActiveRecord #WebDevelopment #Coding #Programming #tutorial






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